diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml index 7912fb711d3..58dc06b68b8 100644 --- a/doc/src/sgml/func.sgml +++ b/doc/src/sgml/func.sgml @@ -30267,6 +30267,55 @@ DETAIL: Make sure pg_wal_replay_wait() isn't called within a transaction with a + + + + pg_restore_relation_stats + + pg_restore_relation_stats ( + VARIADIC kwargs "any" ) + boolean + + + Similar to pg_set_relation_stats(), but intended + for bulk restore of relation statistics. The tracked statistics may + change from version to version, so the primary purpose of this + function is to maintain a consistent function signature to avoid + errors when restoring statistics from previous versions. + + + Arguments are passed as pairs of argname + and argvalue, where + argname corresponds to a named argument in + pg_set_relation_stats() and + argvalue is of the corresponding type. + + + Additionally, this function supports argument name + version of type integer, which + specifies the version from which the statistics originated, improving + intepretation of older statistics. + + + For example, to set the relpages and + reltuples of the table + mytable: + + SELECT pg_restore_relation_stats( + 'relation', 'mytable'::regclass, + 'relpages', 173::integer, + 'reltuples', 10000::float4); + + + + Minor errors are reported as a WARNING and + ignored, and remaining statistics will still be restored. If all + specified statistics are successfully restored, return + true, otherwise false. + + + + @@ -30338,6 +30387,57 @@ DETAIL: Make sure pg_wal_replay_wait() isn't called within a transaction with a + + + + pg_restore_attribute_stats + + pg_restore_attribute_stats ( + VARIADIC kwargs "any" ) + boolean + + + Similar to pg_set_attribute_stats(), but + intended for bulk restore of attribute statistics. The tracked + statistics may change from version to version, so the primary purpose + of this function is to maintain a consistent function signature to + avoid errors when restoring statistics from previous versions. + + + Arguments are passed as pairs of argname + and argvalue, where + argname corresponds to a named argument in + pg_set_attribute_stats() and + argvalue is of the corresponding type. + + + Additionally, this function supports argument name + version of type integer, which + specifies the version from which the statistics originated, improving + intepretation of older statistics. + + + For example, to set the avg_width and + null_frac for the attribute + col1 of the table + mytable: + + SELECT pg_restore_attribute_stats( + 'relation', 'mytable'::regclass, + 'attname', 'col1'::name, + 'inherited', false, + 'avg_width', 125::integer, + 'null_frac', 0.5::real); + + + + Minor errors are reported as a WARNING and + ignored, and remaining statistics will still be restored. If all + specified statistics are successfully restored, return + true, otherwise false. + + + diff --git a/src/backend/statistics/attribute_stats.c b/src/backend/statistics/attribute_stats.c index 979fe41a000..af61fd79e49 100644 --- a/src/backend/statistics/attribute_stats.c +++ b/src/backend/statistics/attribute_stats.c @@ -877,3 +877,22 @@ pg_clear_attribute_stats(PG_FUNCTION_ARGS) delete_pg_statistic(reloid, attnum, inherited); PG_RETURN_VOID(); } + +Datum +pg_restore_attribute_stats(PG_FUNCTION_ARGS) +{ + LOCAL_FCINFO(positional_fcinfo, NUM_ATTRIBUTE_STATS_ARGS); + bool result = true; + + InitFunctionCallInfoData(*positional_fcinfo, NULL, NUM_ATTRIBUTE_STATS_ARGS, + InvalidOid, NULL, NULL); + + if (!stats_fill_fcinfo_from_arg_pairs(fcinfo, positional_fcinfo, + attarginfo, WARNING)) + result = false; + + if (!attribute_statistics_update(positional_fcinfo, WARNING)) + result = false; + + PG_RETURN_BOOL(result); +} diff --git a/src/backend/statistics/relation_stats.c b/src/backend/statistics/relation_stats.c index b1eb8a9bbaf..5a2aabc921e 100644 --- a/src/backend/statistics/relation_stats.c +++ b/src/backend/statistics/relation_stats.c @@ -67,8 +67,7 @@ relation_statistics_update(FunctionCallInfo fcinfo, int elevel) bool nulls[3] = {0}; int ncols = 0; TupleDesc tupdesc; - HeapTuple newtup; - + bool result = true; stats_check_required_arg(fcinfo, relarginfo, RELATION_ARG); reloid = PG_GETARG_OID(RELATION_ARG); @@ -109,11 +108,9 @@ relation_statistics_update(FunctionCallInfo fcinfo, int elevel) ereport(elevel, (errcode(ERRCODE_INVALID_PARAMETER_VALUE), errmsg("relpages cannot be < -1"))); - table_close(crel, RowExclusiveLock); - return false; + result = false; } - - if (relpages != pgcform->relpages) + else if (relpages != pgcform->relpages) { replaces[ncols] = Anum_pg_class_relpages; values[ncols] = Int32GetDatum(relpages); @@ -130,16 +127,15 @@ relation_statistics_update(FunctionCallInfo fcinfo, int elevel) ereport(elevel, (errcode(ERRCODE_INVALID_PARAMETER_VALUE), errmsg("reltuples cannot be < -1.0"))); - table_close(crel, RowExclusiveLock); - return false; + result = false; } - - if (reltuples != pgcform->reltuples) + else if (reltuples != pgcform->reltuples) { replaces[ncols] = Anum_pg_class_reltuples; values[ncols] = Float4GetDatum(reltuples); ncols++; } + } if (!PG_ARGISNULL(RELALLVISIBLE_ARG)) @@ -151,11 +147,9 @@ relation_statistics_update(FunctionCallInfo fcinfo, int elevel) ereport(elevel, (errcode(ERRCODE_INVALID_PARAMETER_VALUE), errmsg("relallvisible cannot be < 0"))); - table_close(crel, RowExclusiveLock); - return false; + result = false; } - - if (relallvisible != pgcform->relallvisible) + else if (relallvisible != pgcform->relallvisible) { replaces[ncols] = Anum_pg_class_relallvisible; values[ncols] = Int32GetDatum(relallvisible); @@ -164,22 +158,20 @@ relation_statistics_update(FunctionCallInfo fcinfo, int elevel) } /* only update pg_class if there is a meaningful change */ - if (ncols == 0) + if (ncols > 0) { - table_close(crel, RowExclusiveLock); - return false; + HeapTuple newtup; + + newtup = heap_modify_tuple_by_cols(ctup, tupdesc, ncols, replaces, values, + nulls); + CatalogTupleUpdate(crel, &newtup->t_self, newtup); + heap_freetuple(newtup); } - newtup = heap_modify_tuple_by_cols(ctup, tupdesc, ncols, replaces, values, - nulls); - - CatalogTupleUpdate(crel, &newtup->t_self, newtup); - heap_freetuple(newtup); - /* release the lock, consistent with vac_update_relstats() */ table_close(crel, RowExclusiveLock); - return true; + return result; } /* @@ -215,3 +207,23 @@ pg_clear_relation_stats(PG_FUNCTION_ARGS) relation_statistics_update(newfcinfo, ERROR); PG_RETURN_VOID(); } + +Datum +pg_restore_relation_stats(PG_FUNCTION_ARGS) +{ + LOCAL_FCINFO(positional_fcinfo, NUM_RELATION_STATS_ARGS); + bool result = true; + + InitFunctionCallInfoData(*positional_fcinfo, NULL, + NUM_RELATION_STATS_ARGS, + InvalidOid, NULL, NULL); + + if (!stats_fill_fcinfo_from_arg_pairs(fcinfo, positional_fcinfo, + relarginfo, WARNING)) + result = false; + + if (!relation_statistics_update(positional_fcinfo, WARNING)) + result = false; + + PG_RETURN_BOOL(result); +} diff --git a/src/backend/statistics/stat_utils.c b/src/backend/statistics/stat_utils.c index 64b5f21ad8b..728e30e780c 100644 --- a/src/backend/statistics/stat_utils.c +++ b/src/backend/statistics/stat_utils.c @@ -18,6 +18,7 @@ #include "access/relation.h" #include "catalog/pg_database.h" +#include "funcapi.h" #include "miscadmin.h" #include "statistics/stat_utils.h" #include "utils/acl.h" @@ -165,3 +166,128 @@ stats_lock_check_privileges(Oid reloid) relation_close(rel, NoLock); } + +/* + * Find the argument number for the given argument name, returning -1 if not + * found. + */ +static int +get_arg_by_name(const char *argname, struct StatsArgInfo *arginfo, int elevel) +{ + int argnum; + + for (argnum = 0; arginfo[argnum].argname != NULL; argnum++) + if (pg_strcasecmp(argname, arginfo[argnum].argname) == 0) + return argnum; + + ereport(elevel, + (errmsg("unrecognized argument name: \"%s\"", argname))); + + return -1; +} + +/* + * Ensure that a given argument matched the expected type. + */ +static bool +stats_check_arg_type(const char *argname, Oid argtype, Oid expectedtype, int elevel) +{ + if (argtype != expectedtype) + { + ereport(elevel, + (errmsg("argument \"%s\" has type \"%s\", expected type \"%s\"", + argname, format_type_be(argtype), + format_type_be(expectedtype)))); + return false; + } + + return true; +} + +/* + * Translate variadic argument pairs from 'pairs_fcinfo' into a + * 'positional_fcinfo' appropriate for calling relation_statistics_update() or + * attribute_statistics_update() with positional arguments. + * + * Caller should have already initialized positional_fcinfo with a size + * appropriate for calling the intended positional function, and arginfo + * should also match the intended positional function. + */ +bool +stats_fill_fcinfo_from_arg_pairs(FunctionCallInfo pairs_fcinfo, + FunctionCallInfo positional_fcinfo, + struct StatsArgInfo *arginfo, + int elevel) +{ + Datum *args; + bool *argnulls; + Oid *types; + int nargs; + bool result = true; + + /* clear positional args */ + for (int i = 0; arginfo[i].argname != NULL; i++) + { + positional_fcinfo->args[i].value = (Datum) 0; + positional_fcinfo->args[i].isnull = true; + } + + nargs = extract_variadic_args(pairs_fcinfo, 0, true, + &args, &types, &argnulls); + + if (nargs % 2 != 0) + ereport(ERROR, + errmsg("variadic arguments must be name/value pairs"), + errhint("Provide an even number of variadic arguments that can be divided into pairs.")); + + /* + * For each argument name/value pair, find corresponding positional + * argument for the argument name, and assign the argument value to + * postitional_fcinfo. + */ + for (int i = 0; i < nargs; i += 2) + { + int argnum; + char *argname; + + if (argnulls[i]) + ereport(ERROR, + (errmsg("name at variadic position %d is NULL", i + 1))); + + if (types[i] != TEXTOID) + ereport(ERROR, + (errmsg("name at variadic position %d has type \"%s\", expected type \"%s\"", + i + 1, format_type_be(types[i]), + format_type_be(TEXTOID)))); + + if (argnulls[i + 1]) + continue; + + argname = TextDatumGetCString(args[i]); + + /* + * The 'version' argument is a special case, not handled by arginfo + * because it's not a valid positional argument. + * + * For now, 'version' is accepted but ignored. In the future it can be + * used to interpret older statistics properly. + */ + if (pg_strcasecmp(argname, "version") == 0) + continue; + + argnum = get_arg_by_name(argname, arginfo, elevel); + + if (argnum < 0 || !stats_check_arg_type(argname, types[i + 1], + arginfo[argnum].argtype, + elevel)) + { + result = false; + continue; + } + + positional_fcinfo->args[argnum].value = args[i + 1]; + positional_fcinfo->args[argnum].isnull = false; + } + + return result; +} diff --git a/src/include/catalog/catversion.h b/src/include/catalog/catversion.h index 8e0d93239fe..fc1c125d0d0 100644 --- a/src/include/catalog/catversion.h +++ b/src/include/catalog/catversion.h @@ -57,6 +57,6 @@ */ /* yyyymmddN */ -#define CATALOG_VERSION_NO 202410241 +#define CATALOG_VERSION_NO 202410242 #endif diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat index 90010d32a85..1ec0d6f6b5f 100644 --- a/src/include/catalog/pg_proc.dat +++ b/src/include/catalog/pg_proc.dat @@ -12346,7 +12346,25 @@ proallargtypes => '{int8,pg_lsn,pg_lsn,int4}', proargmodes => '{o,o,o,o}', proargnames => '{summarized_tli,summarized_lsn,pending_lsn,summarizer_pid}', prosrc => 'pg_get_wal_summarizer_state' }, - +# Statistics Import +# Statistics Import +{ oid => '8459', + descr => 'restore statistics on relation', + proname => 'pg_restore_relation_stats', provolatile => 'v', proisstrict => 'f', + provariadic => 'any', + proparallel => 'u', prorettype => 'bool', + proargtypes => 'any', + proargnames => '{kwargs}', + proargmodes => '{v}', + prosrc => 'pg_restore_relation_stats' }, +{ oid => '8460', + descr => 'restore statistics on attribute', + proname => 'pg_restore_attribute_stats', provolatile => 'v', proisstrict => 'f', + provariadic => 'any', + proparallel => 'u', prorettype => 'bool', + proargtypes => 'any', + proargnames => '{kwargs}', + proargmodes => '{v}', + prosrc => 'pg_restore_attribute_stats' }, { oid => '9162', descr => 'set statistics on attribute', proname => 'pg_set_attribute_stats', provolatile => 'v', proisstrict => 'f', diff --git a/src/include/statistics/stat_utils.h b/src/include/statistics/stat_utils.h index e5f19d00609..61f1f6b3108 100644 --- a/src/include/statistics/stat_utils.h +++ b/src/include/statistics/stat_utils.h @@ -33,4 +33,9 @@ extern bool stats_check_arg_pair(FunctionCallInfo fcinfo, extern void stats_lock_check_privileges(Oid reloid); +extern bool stats_fill_fcinfo_from_arg_pairs(FunctionCallInfo pairs_fcinfo, + FunctionCallInfo positional_fcinfo, + struct StatsArgInfo *arginfo, + int elevel); + #endif /* STATS_UTILS_H */ diff --git a/src/test/regress/expected/stats_import.out b/src/test/regress/expected/stats_import.out index 6ab21ca324c..9186fc01ecc 100644 --- a/src/test/regress/expected/stats_import.out +++ b/src/test/regress/expected/stats_import.out @@ -228,45 +228,6 @@ SELECT pg_catalog.pg_set_attribute_stats( avg_width => 2::integer, n_distinct => 0.3::real); ERROR: "inherited" cannot be NULL --- error: null_frac null -SELECT pg_catalog.pg_set_attribute_stats( - relation => 'stats_import.test'::regclass, - attname => 'id'::name, - inherited => false::boolean, - null_frac => NULL::real, - avg_width => 2::integer, - n_distinct => 0.3::real); - pg_set_attribute_stats ------------------------- - -(1 row) - --- error: avg_width null -SELECT pg_catalog.pg_set_attribute_stats( - relation => 'stats_import.test'::regclass, - attname => 'id'::name, - inherited => false::boolean, - null_frac => 0.1::real, - avg_width => NULL::integer, - n_distinct => 0.3::real); - pg_set_attribute_stats ------------------------- - -(1 row) - --- error: avg_width null -SELECT pg_catalog.pg_set_attribute_stats( - relation => 'stats_import.test'::regclass, - attname => 'id'::name, - inherited => false::boolean, - null_frac => 0.1::real, - avg_width => 2::integer, - n_distinct => NULL::real); - pg_set_attribute_stats ------------------------- - -(1 row) - -- ok: no stakinds SELECT pg_catalog.pg_set_attribute_stats( relation => 'stats_import.test'::regclass, @@ -655,6 +616,711 @@ SELECT pg_catalog.pg_set_attribute_stats( ); ERROR: unable to determine element type of attribute "arange" DETAIL: Cannot set STATISTIC_KIND_MCELEM or STATISTIC_KIND_DECHIST. +-- +-- Clear attribute stats to try again with restore functions +-- (relation stats were already cleared). +-- +SELECT + pg_catalog.pg_clear_attribute_stats( + 'stats_import.test'::regclass, + s.attname, + s.inherited) +FROM pg_catalog.pg_stats AS s +WHERE s.schemaname = 'stats_import' +AND s.tablename = 'test' +ORDER BY s.attname, s.inherited; + pg_clear_attribute_stats +-------------------------- + + + +(3 rows) + +-- reject: argument name is NULL +SELECT pg_restore_relation_stats( + 'relation', '0'::oid::regclass, + 'version', 150000::integer, + NULL, '17'::integer, + 'reltuples', 400::real, + 'relallvisible', 4::integer); +ERROR: name at variadic position 5 is NULL +-- reject: argument name is an integer +SELECT pg_restore_relation_stats( + 'relation', '0'::oid::regclass, + 'version', 150000::integer, + 17, '17'::integer, + 'reltuples', 400::real, + 'relallvisible', 4::integer); +ERROR: name at variadic position 5 has type "integer", expected type "text" +-- reject: odd number of variadic arguments cannot be pairs +SELECT pg_restore_relation_stats( + 'relation', '0'::oid::regclass, + 'version', 150000::integer, + 'relpages', '17'::integer, + 'reltuples', 400::real, + 'relallvisible'); +ERROR: variadic arguments must be name/value pairs +HINT: Provide an even number of variadic arguments that can be divided into pairs. +-- reject: object doesn't exist +SELECT pg_restore_relation_stats( + 'relation', '0'::oid::regclass, + 'version', 150000::integer, + 'relpages', '17'::integer, + 'reltuples', 400::real, + 'relallvisible', 4::integer); +ERROR: could not open relation with OID 0 +-- ok: set all stats +SELECT pg_restore_relation_stats( + 'relation', 'stats_import.test'::regclass, + 'version', 150000::integer, + 'relpages', '17'::integer, + 'reltuples', 400::real, + 'relallvisible', 4::integer); + pg_restore_relation_stats +--------------------------- + t +(1 row) + +SELECT relpages, reltuples, relallvisible +FROM pg_class +WHERE oid = 'stats_import.test'::regclass; + relpages | reltuples | relallvisible +----------+-----------+--------------- + 17 | 400 | 4 +(1 row) + +-- ok: just relpages +SELECT pg_restore_relation_stats( + 'relation', 'stats_import.test'::regclass, + 'version', 150000::integer, + 'relpages', '16'::integer); + pg_restore_relation_stats +--------------------------- + t +(1 row) + +SELECT relpages, reltuples, relallvisible +FROM pg_class +WHERE oid = 'stats_import.test'::regclass; + relpages | reltuples | relallvisible +----------+-----------+--------------- + 16 | 400 | 4 +(1 row) + +-- ok: just reltuples +SELECT pg_restore_relation_stats( + 'relation', 'stats_import.test'::regclass, + 'version', 150000::integer, + 'reltuples', '500'::real); + pg_restore_relation_stats +--------------------------- + t +(1 row) + +SELECT relpages, reltuples, relallvisible +FROM pg_class +WHERE oid = 'stats_import.test'::regclass; + relpages | reltuples | relallvisible +----------+-----------+--------------- + 16 | 500 | 4 +(1 row) + +-- ok: just relallvisible +SELECT pg_restore_relation_stats( + 'relation', 'stats_import.test'::regclass, + 'version', 150000::integer, + 'relallvisible', 5::integer); + pg_restore_relation_stats +--------------------------- + t +(1 row) + +SELECT relpages, reltuples, relallvisible +FROM pg_class +WHERE oid = 'stats_import.test'::regclass; + relpages | reltuples | relallvisible +----------+-----------+--------------- + 16 | 500 | 5 +(1 row) + +-- warn and error: unrecognized argument name +SELECT pg_restore_relation_stats( + 'relation', '0'::oid::regclass, + 'version', 150000::integer, + 'relpages', '17'::integer, + 'reltuples', 400::real, + 'nope', 4::integer); +WARNING: unrecognized argument name: "nope" +ERROR: could not open relation with OID 0 +-- warn: bad relpages type +SELECT pg_restore_relation_stats( + 'relation', 'stats_import.test'::regclass, + 'version', 150000::integer, + 'relpages', 'nope'::text, + 'reltuples', 400.0::real, + 'relallvisible', 4::integer); +WARNING: argument "relpages" has type "text", expected type "integer" + pg_restore_relation_stats +--------------------------- + f +(1 row) + +SELECT relpages, reltuples, relallvisible +FROM pg_class +WHERE oid = 'stats_import.test'::regclass; + relpages | reltuples | relallvisible +----------+-----------+--------------- + 16 | 400 | 4 +(1 row) + +-- error: object does not exist +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', '0'::oid::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real, + 'avg_width', 2::integer, + 'n_distinct', 0.3::real); +ERROR: could not open relation with OID 0 +-- error: relation null +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', NULL::oid, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real, + 'avg_width', 2::integer, + 'n_distinct', 0.3::real); +ERROR: "relation" cannot be NULL +-- error: attname null +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', NULL::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real, + 'avg_width', 2::integer, + 'n_distinct', 0.3::real); +ERROR: "attname" cannot be NULL +-- error: attname doesn't exist +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'nope'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real, + 'avg_width', 2::integer, + 'n_distinct', 0.3::real); +ERROR: column "nope" of relation "test" does not exist +-- error: inherited null +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'inherited', NULL::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real, + 'avg_width', 2::integer, + 'n_distinct', 0.3::real); +ERROR: "inherited" cannot be NULL +-- ok: no stakinds +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.4::real, + 'avg_width', 5::integer, + 'n_distinct', 0.6::real); + pg_restore_attribute_stats +---------------------------- + t +(1 row) + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'id'; + schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram +--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------ + stats_import | test | id | f | 0.4 | 5 | 0.6 | | | | | | | | | | +(1 row) + +-- warn: unrecognized argument name +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.2::real, + 'avg_width', NULL::integer, + 'nope', 0.5::real); +WARNING: unrecognized argument name: "nope" + pg_restore_attribute_stats +---------------------------- + f +(1 row) + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'id'; + schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram +--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------ + stats_import | test | id | f | 0.2 | 5 | 0.6 | | | | | | | | | | +(1 row) + +-- warn: mcv / mcf null mismatch part 1 +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.6::real, + 'avg_width', 7::integer, + 'n_distinct', -0.7::real, + 'most_common_freqs', '{0.1,0.2,0.3}'::real[] + ); +WARNING: "most_common_vals" must be specified when "most_common_freqs" is specified + pg_restore_attribute_stats +---------------------------- + f +(1 row) + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'id'; + schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram +--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------ + stats_import | test | id | f | 0.6 | 7 | -0.7 | | | | | | | | | | +(1 row) + +-- warn: mcv / mcf null mismatch part 2 +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.7::real, + 'avg_width', 8::integer, + 'n_distinct', -0.8::real, + 'most_common_vals', '{1,2,3}'::text + ); +WARNING: "most_common_freqs" must be specified when "most_common_vals" is specified + pg_restore_attribute_stats +---------------------------- + f +(1 row) + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'id'; + schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram +--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------ + stats_import | test | id | f | 0.7 | 8 | -0.8 | | | | | | | | | | +(1 row) + +-- warn: mcv / mcf type mismatch +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.8::real, + 'avg_width', 9::integer, + 'n_distinct', -0.9::real, + 'most_common_vals', '{2,1,3}'::text, + 'most_common_freqs', '{0.2,0.1}'::double precision[] + ); +WARNING: argument "most_common_freqs" has type "double precision[]", expected type "real[]" +WARNING: "most_common_freqs" must be specified when "most_common_vals" is specified + pg_restore_attribute_stats +---------------------------- + f +(1 row) + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'id'; + schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram +--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------ + stats_import | test | id | f | 0.8 | 9 | -0.9 | | | | | | | | | | +(1 row) + +-- warn: mcv cast failure +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.9::real, + 'avg_width', 10::integer, + 'n_distinct', -0.4::real, + 'most_common_vals', '{2,four,3}'::text, + 'most_common_freqs', '{0.3,0.25,0.05}'::real[] + ); +WARNING: invalid input syntax for type integer: "four" + pg_restore_attribute_stats +---------------------------- + f +(1 row) + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'id'; + schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram +--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------ + stats_import | test | id | f | 0.9 | 10 | -0.4 | | | | | | | | | | +(1 row) + +-- ok: mcv+mcf +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real, + 'avg_width', 1::integer, + 'n_distinct', -0.1::real, + 'most_common_vals', '{2,1,3}'::text, + 'most_common_freqs', '{0.3,0.25,0.05}'::real[] + ); + pg_restore_attribute_stats +---------------------------- + t +(1 row) + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'id'; + schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram +--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------ + stats_import | test | id | f | 0.1 | 1 | -0.1 | {2,1,3} | {0.3,0.25,0.05} | | | | | | | | +(1 row) + +-- warn: NULL in histogram array +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.2::real, + 'avg_width', 2::integer, + 'n_distinct', -0.2::real, + 'histogram_bounds', '{1,NULL,3,4}'::text + ); +WARNING: "histogram_bounds" array cannot contain NULL values + pg_restore_attribute_stats +---------------------------- + f +(1 row) + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'id'; + schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram +--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------ + stats_import | test | id | f | 0.2 | 2 | -0.2 | {2,1,3} | {0.3,0.25,0.05} | | | | | | | | +(1 row) + +-- ok: histogram_bounds +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.3::real, + 'avg_width', 3::integer, + 'n_distinct', -0.3::real, + 'histogram_bounds', '{1,2,3,4}'::text ); + pg_restore_attribute_stats +---------------------------- + t +(1 row) + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'id'; + schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram +--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------ + stats_import | test | id | f | 0.3 | 3 | -0.3 | {2,1,3} | {0.3,0.25,0.05} | {1,2,3,4} | | | | | | | +(1 row) + +-- warn: elem_count_histogram null element +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'tags'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.4::real, + 'avg_width', 5::integer, + 'n_distinct', -0.4::real, + 'elem_count_histogram', '{1,1,NULL,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}'::real[] + ); +WARNING: "elem_count_histogram" array cannot contain NULL values + pg_restore_attribute_stats +---------------------------- + f +(1 row) + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'tags'; + schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram +--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------ + stats_import | test | tags | f | 0.4 | 5 | -0.4 | | | | | | | | | | +(1 row) + +-- ok: elem_count_histogram +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'tags'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.5::real, + 'avg_width', 6::integer, + 'n_distinct', -0.55::real, + 'elem_count_histogram', '{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}'::real[] + ); + pg_restore_attribute_stats +---------------------------- + t +(1 row) + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'tags'; + schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram +--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------------------+------------------+------------------------ + stats_import | test | tags | f | 0.5 | 6 | -0.55 | | | | | | | {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1} | | | +(1 row) + +-- range stats on a scalar type +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.6::real, + 'avg_width', 7::integer, + 'n_distinct', -0.15::real, + 'range_empty_frac', 0.5::real, + 'range_length_histogram', '{399,499,Infinity}'::text + ); +WARNING: attribute "id" is not a range type +DETAIL: Cannot set STATISTIC_KIND_RANGE_LENGTH_HISTOGRAM or STATISTIC_KIND_BOUNDS_HISTOGRAM. + pg_restore_attribute_stats +---------------------------- + f +(1 row) + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'id'; + schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram +--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------ + stats_import | test | id | f | 0.6 | 7 | -0.15 | {2,1,3} | {0.3,0.25,0.05} | {1,2,3,4} | | | | | | | +(1 row) + +-- warn: range_empty_frac range_length_hist null mismatch +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'arange'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.7::real, + 'avg_width', 8::integer, + 'n_distinct', -0.25::real, + 'range_length_histogram', '{399,499,Infinity}'::text + ); +WARNING: "range_empty_frac" must be specified when "range_length_histogram" is specified + pg_restore_attribute_stats +---------------------------- + f +(1 row) + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'arange'; + schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram +--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------ + stats_import | test | arange | f | 0.7 | 8 | -0.25 | | | | | | | | | | +(1 row) + +-- warn: range_empty_frac range_length_hist null mismatch part 2 +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'arange'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.8::real, + 'avg_width', 9::integer, + 'n_distinct', -0.35::real, + 'range_empty_frac', 0.5::real + ); +WARNING: "range_length_histogram" must be specified when "range_empty_frac" is specified + pg_restore_attribute_stats +---------------------------- + f +(1 row) + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'arange'; + schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram +--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------ + stats_import | test | arange | f | 0.8 | 9 | -0.35 | | | | | | | | | | +(1 row) + +-- ok: range_empty_frac + range_length_hist +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'arange'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.9::real, + 'avg_width', 1::integer, + 'n_distinct', -0.19::real, + 'range_empty_frac', 0.5::real, + 'range_length_histogram', '{399,499,Infinity}'::text + ); + pg_restore_attribute_stats +---------------------------- + t +(1 row) + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'arange'; + schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram +--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------ + stats_import | test | arange | f | 0.9 | 1 | -0.19 | | | | | | | | {399,499,Infinity} | 0.5 | +(1 row) + +-- warn: range bounds histogram on scalar +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real, + 'avg_width', 2::integer, + 'n_distinct', -0.29::real, + 'range_bounds_histogram', '{"[-1,1)","[0,4)","[1,4)","[1,100)"}'::text + ); +WARNING: attribute "id" is not a range type +DETAIL: Cannot set STATISTIC_KIND_RANGE_LENGTH_HISTOGRAM or STATISTIC_KIND_BOUNDS_HISTOGRAM. + pg_restore_attribute_stats +---------------------------- + f +(1 row) + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'id'; + schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram +--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------ + stats_import | test | id | f | 0.1 | 2 | -0.29 | {2,1,3} | {0.3,0.25,0.05} | {1,2,3,4} | | | | | | | +(1 row) + +-- ok: range_bounds_histogram +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'arange'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.2::real, + 'avg_width', 3::integer, + 'n_distinct', -0.39::real, + 'range_bounds_histogram', '{"[-1,1)","[0,4)","[1,4)","[1,100)"}'::text + ); + pg_restore_attribute_stats +---------------------------- + t +(1 row) + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'arange'; + schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram +--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+-------------------------------------- + stats_import | test | arange | f | 0.2 | 3 | -0.39 | | | | | | | | {399,499,Infinity} | 0.5 | {"[-1,1)","[0,4)","[1,4)","[1,100)"} +(1 row) + +-- warn: too many stat kinds +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'arange'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.5::real, + 'avg_width', 2::integer, + 'n_distinct', -0.1::real, + 'most_common_vals', '{"[2,3)","[1,3)","[3,9)"}'::text, + 'most_common_freqs', '{0.3,0.25,0.05}'::real[], + 'histogram_bounds', '{"[1,2)","[2,3)","[3,4)","[4,)"}'::text, + 'correlation', 1.1::real, + 'most_common_elems', '{3,1}'::text, + 'most_common_elem_freqs', '{0.3,0.2,0.2,0.3,0.0}'::real[], + 'range_empty_frac', -0.5::real, + 'range_length_histogram', '{399,499,Infinity}'::text, + 'range_bounds_histogram', '{"[-1,1)","[0,4)","[1,4)","[1,100)"}'::text); +WARNING: unable to determine element type of attribute "arange" +DETAIL: Cannot set STATISTIC_KIND_MCELEM or STATISTIC_KIND_DECHIST. + pg_restore_attribute_stats +---------------------------- + f +(1 row) + -- -- Test the ability to exactly copy data from one table to an identical table, -- correctly reconstructing the stakind order as well as the staopN and @@ -848,6 +1514,217 @@ WHERE s.starelid = 'stats_import.is_odd'::regclass; ---------+------------+-------------+----------+-------------+----------+----------+----------+----------+----------+--------+--------+--------+--------+--------+----------+----------+----------+----------+----------+-------------+-------------+-------------+-------------+-------------+-----+-----+-----+-----+-----+----------- (0 rows) +-- +SELECT relpages, reltuples, relallvisible +FROM pg_class +WHERE oid = 'stats_import.test'::regclass; + relpages | reltuples | relallvisible +----------+-----------+--------------- + 1 | 4 | 0 +(1 row) + +-- +-- Clear clone stats to try again with pg_restore_attribute_stats +-- +SELECT + pg_catalog.pg_clear_attribute_stats( + ('stats_import.' || s.tablename)::regclass, + s.attname, + s.inherited) +FROM pg_catalog.pg_stats AS s +WHERE s.schemaname = 'stats_import' +AND s.tablename IN ('test_clone', 'is_odd_clone') +ORDER BY s.tablename, s.attname, s.inherited; + pg_clear_attribute_stats +-------------------------- + + + + + + +(6 rows) + +SELECT +SELECT COUNT(*) +FROM pg_catalog.pg_stats AS s +WHERE s.schemaname = 'stats_import' +AND s.tablename IN ('test_clone', 'is_odd_clone'); +ERROR: syntax error at or near "SELECT" +LINE 2: SELECT COUNT(*) + ^ +-- +-- Copy stats from test to test_clone, and is_odd to is_odd_clone +-- +SELECT s.schemaname, s.tablename, s.attname, s.inherited, r.* +FROM pg_catalog.pg_stats AS s +CROSS JOIN LATERAL + pg_catalog.pg_restore_attribute_stats( + 'relation', ('stats_import.' || s.tablename || '_clone')::regclass, + 'attname', s.attname, + 'inherited', s.inherited, + 'version', 150000, + 'null_frac', s.null_frac, + 'avg_width', s.avg_width, + 'n_distinct', s.n_distinct, + 'most_common_vals', s.most_common_vals::text, + 'most_common_freqs', s.most_common_freqs, + 'histogram_bounds', s.histogram_bounds::text, + 'correlation', s.correlation, + 'most_common_elems', s.most_common_elems::text, + 'most_common_elem_freqs', s.most_common_elem_freqs, + 'elem_count_histogram', s.elem_count_histogram, + 'range_bounds_histogram', s.range_bounds_histogram::text, + 'range_empty_frac', s.range_empty_frac, + 'range_length_histogram', s.range_length_histogram::text) AS r +WHERE s.schemaname = 'stats_import' +AND s.tablename IN ('test', 'is_odd') +ORDER BY s.tablename, s.attname, s.inherited; + schemaname | tablename | attname | inherited | r +--------------+-----------+---------+-----------+--- + stats_import | is_odd | expr | f | t + stats_import | test | arange | f | t + stats_import | test | comp | f | t + stats_import | test | id | f | t + stats_import | test | name | f | t + stats_import | test | tags | f | t +(6 rows) + +SELECT c.relname, COUNT(*) AS num_stats +FROM pg_class AS c +JOIN pg_statistic s ON s.starelid = c.oid +WHERE c.relnamespace = 'stats_import'::regnamespace +AND c.relname IN ('test', 'test_clone', 'is_odd', 'is_odd_clone') +GROUP BY c.relname +ORDER BY c.relname; + relname | num_stats +--------------+----------- + is_odd | 1 + is_odd_clone | 1 + test | 5 + test_clone | 5 +(4 rows) + +-- check test minus test_clone +SELECT + a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct, + s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5, + s.staop1, s.staop2, s.staop3, s.staop4, s.staop5, + s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5, + s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5, + s.stavalues1::text AS sv1, s.stavalues2::text AS sv2, + s.stavalues3::text AS sv3, s.stavalues4::text AS sv4, + s.stavalues5::text AS sv5, 'test' AS direction +FROM pg_statistic s +JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum +WHERE s.starelid = 'stats_import.test'::regclass +EXCEPT +SELECT + a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct, + s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5, + s.staop1, s.staop2, s.staop3, s.staop4, s.staop5, + s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5, + s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5, + s.stavalues1::text AS sv1, s.stavalues2::text AS sv2, + s.stavalues3::text AS sv3, s.stavalues4::text AS sv4, + s.stavalues5::text AS sv5, 'test' AS direction +FROM pg_statistic s +JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum +WHERE s.starelid = 'stats_import.test_clone'::regclass; + attname | stainherit | stanullfrac | stawidth | stadistinct | stakind1 | stakind2 | stakind3 | stakind4 | stakind5 | staop1 | staop2 | staop3 | staop4 | staop5 | stacoll1 | stacoll2 | stacoll3 | stacoll4 | stacoll5 | stanumbers1 | stanumbers2 | stanumbers3 | stanumbers4 | stanumbers5 | sv1 | sv2 | sv3 | sv4 | sv5 | direction +---------+------------+-------------+----------+-------------+----------+----------+----------+----------+----------+--------+--------+--------+--------+--------+----------+----------+----------+----------+----------+-------------+-------------+-------------+-------------+-------------+-----+-----+-----+-----+-----+----------- +(0 rows) + +-- check test_clone minus test +SELECT + a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct, + s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5, + s.staop1, s.staop2, s.staop3, s.staop4, s.staop5, + s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5, + s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5, + s.stavalues1::text AS sv1, s.stavalues2::text AS sv2, + s.stavalues3::text AS sv3, s.stavalues4::text AS sv4, + s.stavalues5::text AS sv5, 'test_clone' AS direction +FROM pg_statistic s +JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum +WHERE s.starelid = 'stats_import.test_clone'::regclass +EXCEPT +SELECT + a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct, + s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5, + s.staop1, s.staop2, s.staop3, s.staop4, s.staop5, + s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5, + s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5, + s.stavalues1::text AS sv1, s.stavalues2::text AS sv2, + s.stavalues3::text AS sv3, s.stavalues4::text AS sv4, + s.stavalues5::text AS sv5, 'test_clone' AS direction +FROM pg_statistic s +JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum +WHERE s.starelid = 'stats_import.test'::regclass; + attname | stainherit | stanullfrac | stawidth | stadistinct | stakind1 | stakind2 | stakind3 | stakind4 | stakind5 | staop1 | staop2 | staop3 | staop4 | staop5 | stacoll1 | stacoll2 | stacoll3 | stacoll4 | stacoll5 | stanumbers1 | stanumbers2 | stanumbers3 | stanumbers4 | stanumbers5 | sv1 | sv2 | sv3 | sv4 | sv5 | direction +---------+------------+-------------+----------+-------------+----------+----------+----------+----------+----------+--------+--------+--------+--------+--------+----------+----------+----------+----------+----------+-------------+-------------+-------------+-------------+-------------+-----+-----+-----+-----+-----+----------- +(0 rows) + +-- check is_odd minus is_odd_clone +SELECT + a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct, + s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5, + s.staop1, s.staop2, s.staop3, s.staop4, s.staop5, + s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5, + s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5, + s.stavalues1::text AS sv1, s.stavalues2::text AS sv2, + s.stavalues3::text AS sv3, s.stavalues4::text AS sv4, + s.stavalues5::text AS sv5, 'is_odd' AS direction +FROM pg_statistic s +JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum +WHERE s.starelid = 'stats_import.is_odd'::regclass +EXCEPT +SELECT + a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct, + s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5, + s.staop1, s.staop2, s.staop3, s.staop4, s.staop5, + s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5, + s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5, + s.stavalues1::text AS sv1, s.stavalues2::text AS sv2, + s.stavalues3::text AS sv3, s.stavalues4::text AS sv4, + s.stavalues5::text AS sv5, 'is_odd' AS direction +FROM pg_statistic s +JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum +WHERE s.starelid = 'stats_import.is_odd_clone'::regclass; + attname | stainherit | stanullfrac | stawidth | stadistinct | stakind1 | stakind2 | stakind3 | stakind4 | stakind5 | staop1 | staop2 | staop3 | staop4 | staop5 | stacoll1 | stacoll2 | stacoll3 | stacoll4 | stacoll5 | stanumbers1 | stanumbers2 | stanumbers3 | stanumbers4 | stanumbers5 | sv1 | sv2 | sv3 | sv4 | sv5 | direction +---------+------------+-------------+----------+-------------+----------+----------+----------+----------+----------+--------+--------+--------+--------+--------+----------+----------+----------+----------+----------+-------------+-------------+-------------+-------------+-------------+-----+-----+-----+-----+-----+----------- +(0 rows) + +-- check is_odd_clone minus is_odd +SELECT + a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct, + s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5, + s.staop1, s.staop2, s.staop3, s.staop4, s.staop5, + s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5, + s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5, + s.stavalues1::text AS sv1, s.stavalues2::text AS sv2, + s.stavalues3::text AS sv3, s.stavalues4::text AS sv4, + s.stavalues5::text AS sv5, 'is_odd_clone' AS direction +FROM pg_statistic s +JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum +WHERE s.starelid = 'stats_import.is_odd_clone'::regclass +EXCEPT +SELECT + a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct, + s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5, + s.staop1, s.staop2, s.staop3, s.staop4, s.staop5, + s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5, + s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5, + s.stavalues1::text AS sv1, s.stavalues2::text AS sv2, + s.stavalues3::text AS sv3, s.stavalues4::text AS sv4, + s.stavalues5::text AS sv5, 'is_odd_clone' AS direction +FROM pg_statistic s +JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum +WHERE s.starelid = 'stats_import.is_odd'::regclass; + attname | stainherit | stanullfrac | stawidth | stadistinct | stakind1 | stakind2 | stakind3 | stakind4 | stakind5 | staop1 | staop2 | staop3 | staop4 | staop5 | stacoll1 | stacoll2 | stacoll3 | stacoll4 | stacoll5 | stanumbers1 | stanumbers2 | stanumbers3 | stanumbers4 | stanumbers5 | sv1 | sv2 | sv3 | sv4 | sv5 | direction +---------+------------+-------------+----------+-------------+----------+----------+----------+----------+----------+--------+--------+--------+--------+--------+----------+----------+----------+----------+----------+-------------+-------------+-------------+-------------+-------------+-----+-----+-----+-----+-----+----------- +(0 rows) + DROP SCHEMA stats_import CASCADE; NOTICE: drop cascades to 6 other objects DETAIL: drop cascades to type stats_import.complex_type diff --git a/src/test/regress/sql/stats_import.sql b/src/test/regress/sql/stats_import.sql index b5689ac8fb3..c7d5e017d90 100644 --- a/src/test/regress/sql/stats_import.sql +++ b/src/test/regress/sql/stats_import.sql @@ -178,33 +178,6 @@ SELECT pg_catalog.pg_set_attribute_stats( avg_width => 2::integer, n_distinct => 0.3::real); --- error: null_frac null -SELECT pg_catalog.pg_set_attribute_stats( - relation => 'stats_import.test'::regclass, - attname => 'id'::name, - inherited => false::boolean, - null_frac => NULL::real, - avg_width => 2::integer, - n_distinct => 0.3::real); - --- error: avg_width null -SELECT pg_catalog.pg_set_attribute_stats( - relation => 'stats_import.test'::regclass, - attname => 'id'::name, - inherited => false::boolean, - null_frac => 0.1::real, - avg_width => NULL::integer, - n_distinct => 0.3::real); - --- error: avg_width null -SELECT pg_catalog.pg_set_attribute_stats( - relation => 'stats_import.test'::regclass, - attname => 'id'::name, - inherited => false::boolean, - null_frac => 0.1::real, - avg_width => 2::integer, - n_distinct => NULL::real); - -- ok: no stakinds SELECT pg_catalog.pg_set_attribute_stats( relation => 'stats_import.test'::regclass, @@ -517,6 +490,507 @@ SELECT pg_catalog.pg_set_attribute_stats( range_length_histogram => '{399,499,Infinity}'::text, range_bounds_histogram => '{"[-1,1)","[0,4)","[1,4)","[1,100)"}'::text ); + +-- +-- Clear attribute stats to try again with restore functions +-- (relation stats were already cleared). +-- +SELECT + pg_catalog.pg_clear_attribute_stats( + 'stats_import.test'::regclass, + s.attname, + s.inherited) +FROM pg_catalog.pg_stats AS s +WHERE s.schemaname = 'stats_import' +AND s.tablename = 'test' +ORDER BY s.attname, s.inherited; + +-- reject: argument name is NULL +SELECT pg_restore_relation_stats( + 'relation', '0'::oid::regclass, + 'version', 150000::integer, + NULL, '17'::integer, + 'reltuples', 400::real, + 'relallvisible', 4::integer); + +-- reject: argument name is an integer +SELECT pg_restore_relation_stats( + 'relation', '0'::oid::regclass, + 'version', 150000::integer, + 17, '17'::integer, + 'reltuples', 400::real, + 'relallvisible', 4::integer); + +-- reject: odd number of variadic arguments cannot be pairs +SELECT pg_restore_relation_stats( + 'relation', '0'::oid::regclass, + 'version', 150000::integer, + 'relpages', '17'::integer, + 'reltuples', 400::real, + 'relallvisible'); + +-- reject: object doesn't exist +SELECT pg_restore_relation_stats( + 'relation', '0'::oid::regclass, + 'version', 150000::integer, + 'relpages', '17'::integer, + 'reltuples', 400::real, + 'relallvisible', 4::integer); + +-- ok: set all stats +SELECT pg_restore_relation_stats( + 'relation', 'stats_import.test'::regclass, + 'version', 150000::integer, + 'relpages', '17'::integer, + 'reltuples', 400::real, + 'relallvisible', 4::integer); + +SELECT relpages, reltuples, relallvisible +FROM pg_class +WHERE oid = 'stats_import.test'::regclass; + +-- ok: just relpages +SELECT pg_restore_relation_stats( + 'relation', 'stats_import.test'::regclass, + 'version', 150000::integer, + 'relpages', '16'::integer); + +SELECT relpages, reltuples, relallvisible +FROM pg_class +WHERE oid = 'stats_import.test'::regclass; + +-- ok: just reltuples +SELECT pg_restore_relation_stats( + 'relation', 'stats_import.test'::regclass, + 'version', 150000::integer, + 'reltuples', '500'::real); + +SELECT relpages, reltuples, relallvisible +FROM pg_class +WHERE oid = 'stats_import.test'::regclass; + +-- ok: just relallvisible +SELECT pg_restore_relation_stats( + 'relation', 'stats_import.test'::regclass, + 'version', 150000::integer, + 'relallvisible', 5::integer); + +SELECT relpages, reltuples, relallvisible +FROM pg_class +WHERE oid = 'stats_import.test'::regclass; + +-- warn and error: unrecognized argument name +SELECT pg_restore_relation_stats( + 'relation', '0'::oid::regclass, + 'version', 150000::integer, + 'relpages', '17'::integer, + 'reltuples', 400::real, + 'nope', 4::integer); + +-- warn: bad relpages type +SELECT pg_restore_relation_stats( + 'relation', 'stats_import.test'::regclass, + 'version', 150000::integer, + 'relpages', 'nope'::text, + 'reltuples', 400.0::real, + 'relallvisible', 4::integer); + +SELECT relpages, reltuples, relallvisible +FROM pg_class +WHERE oid = 'stats_import.test'::regclass; + +-- error: object does not exist +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', '0'::oid::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real, + 'avg_width', 2::integer, + 'n_distinct', 0.3::real); + +-- error: relation null +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', NULL::oid, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real, + 'avg_width', 2::integer, + 'n_distinct', 0.3::real); + +-- error: attname null +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', NULL::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real, + 'avg_width', 2::integer, + 'n_distinct', 0.3::real); + +-- error: attname doesn't exist +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'nope'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real, + 'avg_width', 2::integer, + 'n_distinct', 0.3::real); + +-- error: inherited null +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'inherited', NULL::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real, + 'avg_width', 2::integer, + 'n_distinct', 0.3::real); + +-- ok: no stakinds +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.4::real, + 'avg_width', 5::integer, + 'n_distinct', 0.6::real); + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'id'; + +-- warn: unrecognized argument name +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.2::real, + 'avg_width', NULL::integer, + 'nope', 0.5::real); + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'id'; + +-- warn: mcv / mcf null mismatch part 1 +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.6::real, + 'avg_width', 7::integer, + 'n_distinct', -0.7::real, + 'most_common_freqs', '{0.1,0.2,0.3}'::real[] + ); + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'id'; + +-- warn: mcv / mcf null mismatch part 2 +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.7::real, + 'avg_width', 8::integer, + 'n_distinct', -0.8::real, + 'most_common_vals', '{1,2,3}'::text + ); + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'id'; + +-- warn: mcv / mcf type mismatch +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.8::real, + 'avg_width', 9::integer, + 'n_distinct', -0.9::real, + 'most_common_vals', '{2,1,3}'::text, + 'most_common_freqs', '{0.2,0.1}'::double precision[] + ); + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'id'; + +-- warn: mcv cast failure +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.9::real, + 'avg_width', 10::integer, + 'n_distinct', -0.4::real, + 'most_common_vals', '{2,four,3}'::text, + 'most_common_freqs', '{0.3,0.25,0.05}'::real[] + ); + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'id'; + +-- ok: mcv+mcf +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real, + 'avg_width', 1::integer, + 'n_distinct', -0.1::real, + 'most_common_vals', '{2,1,3}'::text, + 'most_common_freqs', '{0.3,0.25,0.05}'::real[] + ); + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'id'; + +-- warn: NULL in histogram array +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.2::real, + 'avg_width', 2::integer, + 'n_distinct', -0.2::real, + 'histogram_bounds', '{1,NULL,3,4}'::text + ); + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'id'; + +-- ok: histogram_bounds +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.3::real, + 'avg_width', 3::integer, + 'n_distinct', -0.3::real, + 'histogram_bounds', '{1,2,3,4}'::text ); + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'id'; + +-- warn: elem_count_histogram null element +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'tags'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.4::real, + 'avg_width', 5::integer, + 'n_distinct', -0.4::real, + 'elem_count_histogram', '{1,1,NULL,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}'::real[] + ); + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'tags'; + +-- ok: elem_count_histogram +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'tags'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.5::real, + 'avg_width', 6::integer, + 'n_distinct', -0.55::real, + 'elem_count_histogram', '{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}'::real[] + ); + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'tags'; + +-- range stats on a scalar type +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.6::real, + 'avg_width', 7::integer, + 'n_distinct', -0.15::real, + 'range_empty_frac', 0.5::real, + 'range_length_histogram', '{399,499,Infinity}'::text + ); + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'id'; + +-- warn: range_empty_frac range_length_hist null mismatch +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'arange'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.7::real, + 'avg_width', 8::integer, + 'n_distinct', -0.25::real, + 'range_length_histogram', '{399,499,Infinity}'::text + ); + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'arange'; + +-- warn: range_empty_frac range_length_hist null mismatch part 2 +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'arange'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.8::real, + 'avg_width', 9::integer, + 'n_distinct', -0.35::real, + 'range_empty_frac', 0.5::real + ); + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'arange'; + +-- ok: range_empty_frac + range_length_hist +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'arange'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.9::real, + 'avg_width', 1::integer, + 'n_distinct', -0.19::real, + 'range_empty_frac', 0.5::real, + 'range_length_histogram', '{399,499,Infinity}'::text + ); + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'arange'; + +-- warn: range bounds histogram on scalar +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real, + 'avg_width', 2::integer, + 'n_distinct', -0.29::real, + 'range_bounds_histogram', '{"[-1,1)","[0,4)","[1,4)","[1,100)"}'::text + ); + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'id'; + +-- ok: range_bounds_histogram +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'arange'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.2::real, + 'avg_width', 3::integer, + 'n_distinct', -0.39::real, + 'range_bounds_histogram', '{"[-1,1)","[0,4)","[1,4)","[1,100)"}'::text + ); + +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'arange'; + +-- warn: too many stat kinds +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'arange'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.5::real, + 'avg_width', 2::integer, + 'n_distinct', -0.1::real, + 'most_common_vals', '{"[2,3)","[1,3)","[3,9)"}'::text, + 'most_common_freqs', '{0.3,0.25,0.05}'::real[], + 'histogram_bounds', '{"[1,2)","[2,3)","[3,4)","[4,)"}'::text, + 'correlation', 1.1::real, + 'most_common_elems', '{3,1}'::text, + 'most_common_elem_freqs', '{0.3,0.2,0.2,0.3,0.0}'::real[], + 'range_empty_frac', -0.5::real, + 'range_length_histogram', '{399,499,Infinity}'::text, + 'range_bounds_histogram', '{"[-1,1)","[0,4)","[1,4)","[1,100)"}'::text); + -- -- Test the ability to exactly copy data from one table to an identical table, -- correctly reconstructing the stakind order as well as the staopN and @@ -687,4 +1161,172 @@ FROM pg_statistic s JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum WHERE s.starelid = 'stats_import.is_odd'::regclass; +-- +SELECT relpages, reltuples, relallvisible +FROM pg_class +WHERE oid = 'stats_import.test'::regclass; + +-- +-- Clear clone stats to try again with pg_restore_attribute_stats +-- +SELECT + pg_catalog.pg_clear_attribute_stats( + ('stats_import.' || s.tablename)::regclass, + s.attname, + s.inherited) +FROM pg_catalog.pg_stats AS s +WHERE s.schemaname = 'stats_import' +AND s.tablename IN ('test_clone', 'is_odd_clone') +ORDER BY s.tablename, s.attname, s.inherited; +SELECT + +SELECT COUNT(*) +FROM pg_catalog.pg_stats AS s +WHERE s.schemaname = 'stats_import' +AND s.tablename IN ('test_clone', 'is_odd_clone'); + +-- +-- Copy stats from test to test_clone, and is_odd to is_odd_clone +-- +SELECT s.schemaname, s.tablename, s.attname, s.inherited, r.* +FROM pg_catalog.pg_stats AS s +CROSS JOIN LATERAL + pg_catalog.pg_restore_attribute_stats( + 'relation', ('stats_import.' || s.tablename || '_clone')::regclass, + 'attname', s.attname, + 'inherited', s.inherited, + 'version', 150000, + 'null_frac', s.null_frac, + 'avg_width', s.avg_width, + 'n_distinct', s.n_distinct, + 'most_common_vals', s.most_common_vals::text, + 'most_common_freqs', s.most_common_freqs, + 'histogram_bounds', s.histogram_bounds::text, + 'correlation', s.correlation, + 'most_common_elems', s.most_common_elems::text, + 'most_common_elem_freqs', s.most_common_elem_freqs, + 'elem_count_histogram', s.elem_count_histogram, + 'range_bounds_histogram', s.range_bounds_histogram::text, + 'range_empty_frac', s.range_empty_frac, + 'range_length_histogram', s.range_length_histogram::text) AS r +WHERE s.schemaname = 'stats_import' +AND s.tablename IN ('test', 'is_odd') +ORDER BY s.tablename, s.attname, s.inherited; + +SELECT c.relname, COUNT(*) AS num_stats +FROM pg_class AS c +JOIN pg_statistic s ON s.starelid = c.oid +WHERE c.relnamespace = 'stats_import'::regnamespace +AND c.relname IN ('test', 'test_clone', 'is_odd', 'is_odd_clone') +GROUP BY c.relname +ORDER BY c.relname; + +-- check test minus test_clone +SELECT + a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct, + s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5, + s.staop1, s.staop2, s.staop3, s.staop4, s.staop5, + s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5, + s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5, + s.stavalues1::text AS sv1, s.stavalues2::text AS sv2, + s.stavalues3::text AS sv3, s.stavalues4::text AS sv4, + s.stavalues5::text AS sv5, 'test' AS direction +FROM pg_statistic s +JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum +WHERE s.starelid = 'stats_import.test'::regclass +EXCEPT +SELECT + a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct, + s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5, + s.staop1, s.staop2, s.staop3, s.staop4, s.staop5, + s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5, + s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5, + s.stavalues1::text AS sv1, s.stavalues2::text AS sv2, + s.stavalues3::text AS sv3, s.stavalues4::text AS sv4, + s.stavalues5::text AS sv5, 'test' AS direction +FROM pg_statistic s +JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum +WHERE s.starelid = 'stats_import.test_clone'::regclass; + +-- check test_clone minus test +SELECT + a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct, + s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5, + s.staop1, s.staop2, s.staop3, s.staop4, s.staop5, + s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5, + s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5, + s.stavalues1::text AS sv1, s.stavalues2::text AS sv2, + s.stavalues3::text AS sv3, s.stavalues4::text AS sv4, + s.stavalues5::text AS sv5, 'test_clone' AS direction +FROM pg_statistic s +JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum +WHERE s.starelid = 'stats_import.test_clone'::regclass +EXCEPT +SELECT + a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct, + s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5, + s.staop1, s.staop2, s.staop3, s.staop4, s.staop5, + s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5, + s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5, + s.stavalues1::text AS sv1, s.stavalues2::text AS sv2, + s.stavalues3::text AS sv3, s.stavalues4::text AS sv4, + s.stavalues5::text AS sv5, 'test_clone' AS direction +FROM pg_statistic s +JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum +WHERE s.starelid = 'stats_import.test'::regclass; + +-- check is_odd minus is_odd_clone +SELECT + a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct, + s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5, + s.staop1, s.staop2, s.staop3, s.staop4, s.staop5, + s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5, + s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5, + s.stavalues1::text AS sv1, s.stavalues2::text AS sv2, + s.stavalues3::text AS sv3, s.stavalues4::text AS sv4, + s.stavalues5::text AS sv5, 'is_odd' AS direction +FROM pg_statistic s +JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum +WHERE s.starelid = 'stats_import.is_odd'::regclass +EXCEPT +SELECT + a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct, + s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5, + s.staop1, s.staop2, s.staop3, s.staop4, s.staop5, + s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5, + s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5, + s.stavalues1::text AS sv1, s.stavalues2::text AS sv2, + s.stavalues3::text AS sv3, s.stavalues4::text AS sv4, + s.stavalues5::text AS sv5, 'is_odd' AS direction +FROM pg_statistic s +JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum +WHERE s.starelid = 'stats_import.is_odd_clone'::regclass; + +-- check is_odd_clone minus is_odd +SELECT + a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct, + s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5, + s.staop1, s.staop2, s.staop3, s.staop4, s.staop5, + s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5, + s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5, + s.stavalues1::text AS sv1, s.stavalues2::text AS sv2, + s.stavalues3::text AS sv3, s.stavalues4::text AS sv4, + s.stavalues5::text AS sv5, 'is_odd_clone' AS direction +FROM pg_statistic s +JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum +WHERE s.starelid = 'stats_import.is_odd_clone'::regclass +EXCEPT +SELECT + a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct, + s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5, + s.staop1, s.staop2, s.staop3, s.staop4, s.staop5, + s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5, + s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5, + s.stavalues1::text AS sv1, s.stavalues2::text AS sv2, + s.stavalues3::text AS sv3, s.stavalues4::text AS sv4, + s.stavalues5::text AS sv5, 'is_odd_clone' AS direction +FROM pg_statistic s +JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum +WHERE s.starelid = 'stats_import.is_odd'::regclass; + DROP SCHEMA stats_import CASCADE;