diff --git a/doc/src/sgml/ref/psql-ref.sgml b/doc/src/sgml/ref/psql-ref.sgml index 221a967bfe6..aaf55df9215 100644 --- a/doc/src/sgml/ref/psql-ref.sgml +++ b/doc/src/sgml/ref/psql-ref.sgml @@ -1918,6 +1918,28 @@ testdb=> + + + \dX [ pattern ] + + + Lists extended statistics. + If pattern + is specified, only those extended statistics whose names match the + pattern are listed. + If + is appended to the command name, each extended + statistics is listed with its size. + + + + The column of the kind of extended stats (e.g. Ndistinct) shows some statuses. + "requested" means that it needs to collect statistics by ANALYZE. + "built" means ANALYZE was + finished, and the planner can use it. NULL means that it doesn't exists. + + + \dy[+] [ pattern ] diff --git a/src/bin/psql/command.c b/src/bin/psql/command.c index 303e7c3ad8b..c5ebc1c3f41 100644 --- a/src/bin/psql/command.c +++ b/src/bin/psql/command.c @@ -928,6 +928,9 @@ exec_command_d(PsqlScanState scan_state, bool active_branch, const char *cmd) else success = listExtensions(pattern); break; + case 'X': /* Extended Statistics */ + success = listExtendedStats(pattern, show_verbose); + break; case 'y': /* Event Triggers */ success = listEventTriggers(pattern, show_verbose); break; diff --git a/src/bin/psql/describe.c b/src/bin/psql/describe.c index caf97563f48..c2051ee8207 100644 --- a/src/bin/psql/describe.c +++ b/src/bin/psql/describe.c @@ -4392,6 +4392,156 @@ listEventTriggers(const char *pattern, bool verbose) return true; } +/* + * \dX + * + * Describes extended statistics. + */ +bool +listExtendedStats(const char *pattern, bool verbose) +{ + PQExpBufferData buf; + PGresult *res; + printQueryOpt myopt = pset.popt; + + if (pset.sversion < 100000) + { + char sverbuf[32]; + + pg_log_error("The server (version %s) does not support extended statistics.", + formatPGVersionNumber(pset.sversion, false, + sverbuf, sizeof(sverbuf))); + return true; + } + + initPQExpBuffer(&buf); + printfPQExpBuffer(&buf, + "SELECT \n" + "es.stxnamespace::pg_catalog.regnamespace::text AS \"%s\", \n" + "es.stxname AS \"%s\", \n" + "pg_catalog.format('%%s FROM %%s', \n" + " (SELECT pg_catalog.string_agg(pg_catalog.quote_ident(a.attname),', ') \n" + " FROM pg_catalog.unnest(es.stxkeys) s(attnum) \n" + " JOIN pg_catalog.pg_attribute a \n" + " ON (es.stxrelid = a.attrelid \n" + " AND a.attnum = s.attnum \n" + " AND NOT a.attisdropped)), \n" + "es.stxrelid::regclass) AS \"%s\"", + gettext_noop("Schema"), + gettext_noop("Name"), + gettext_noop("Definition")); + + /* + * Since 12 there are two catalogs - one for the definition, one for the + * data built by ANALYZE. Older releases use a single catalog. Also, 12 + * adds the MCV statistics kind. + */ + if (pset.sversion < 120000) + { + appendPQExpBuffer(&buf, + ",\nCASE WHEN es.stxndistinct IS NOT NULL THEN 'built' \n" + " WHEN 'd' = any(es.stxkind) THEN 'requested' \n" + "END AS \"%s\", \n" + "CASE WHEN es.stxdependencies IS NOT NULL THEN 'built' \n" + " WHEN 'f' = any(es.stxkind) THEN 'requested' \n" + "END AS \"%s\"", + gettext_noop("Ndistinct"), + gettext_noop("Dependencies")); + } + else + { + appendPQExpBuffer(&buf, + ",\nCASE WHEN esd.stxdndistinct IS NOT NULL THEN 'built' \n" + " WHEN 'd' = any(es.stxkind) THEN 'requested' \n" + "END AS \"%s\", \n" + "CASE WHEN esd.stxddependencies IS NOT NULL THEN 'built' \n" + " WHEN 'f' = any(es.stxkind) THEN 'requested' \n" + "END AS \"%s\", \n" + "CASE WHEN esd.stxdmcv IS NOT NULL THEN 'built' \n" + " WHEN 'm' = any(es.stxkind) THEN 'requested' \n" + "END AS \"%s\"", + gettext_noop("Ndistinct"), + gettext_noop("Dependencies"), + gettext_noop("MCV")); + } + + /* In verbose mode, print sizes of the extended statistics objects. */ + if (verbose) + { + if (pset.sversion < 120000) + { + appendPQExpBuffer(&buf, + ",\nCASE WHEN es.stxndistinct IS NOT NULL THEN \n" + " pg_catalog.pg_size_pretty(pg_catalog.length(es.stxndistinct)::bigint) \n" + " WHEN 'd' = any(es.stxkind) THEN '0 bytes' \n" + "END AS \"%s\", \n" + "CASE WHEN es.stxdependencies IS NOT NULL THEN \n" + " pg_catalog.pg_size_pretty(pg_catalog.length(es.stxdependencies)::bigint) \n" + " WHEN 'f' = any(es.stxkind) THEN '0 bytes' \n" + "END AS \"%s\"", + gettext_noop("Ndistinct_size"), + gettext_noop("Dependencies_size")); + } + else + { + appendPQExpBuffer(&buf, + ",\nCASE WHEN esd.stxdndistinct IS NOT NULL THEN \n" + " pg_catalog.pg_size_pretty(pg_catalog.length(esd.stxdndistinct)::bigint) \n" + " WHEN 'd' = any(es.stxkind) THEN '0 bytes' \n" + "END AS \"%s\", \n" + "CASE WHEN esd.stxddependencies IS NOT NULL THEN \n" + " pg_catalog.pg_size_pretty(pg_catalog.length(esd.stxddependencies)::bigint) \n" + " WHEN 'f' = any(es.stxkind) THEN '0 bytes' \n" + "END AS \"%s\", \n" + "CASE WHEN esd.stxdmcv IS NOT NULL THEN \n" + " pg_catalog.pg_size_pretty(pg_catalog.length(esd.stxdmcv)::bigint) \n" + " WHEN 'm' = any(es.stxkind) THEN '0 bytes' \n" + "END AS \"%s\"", + gettext_noop("Ndistinct_size"), + gettext_noop("Dependencies_size"), + gettext_noop("MCV_size")); + } + } + + if (pset.sversion < 120000) + { + appendPQExpBufferStr(&buf, + " \nFROM pg_catalog.pg_statistic_ext es \n" + "INNER JOIN pg_catalog.pg_class c \n" + "ON es.stxrelid = c.oid \n"); + } + else + { + appendPQExpBufferStr(&buf, + " \nFROM pg_catalog.pg_statistic_ext es \n" + "LEFT JOIN pg_catalog.pg_statistic_ext_data esd \n" + "ON es.oid = esd.stxoid \n" + "INNER JOIN pg_catalog.pg_class c \n" + "ON es.stxrelid = c.oid \n"); + } + + processSQLNamePattern(pset.db, &buf, pattern, false, + false, NULL, + "es.stxname", NULL, + NULL); + + appendPQExpBufferStr(&buf, "ORDER BY 1, 2;"); + + res = PSQLexec(buf.data); + termPQExpBuffer(&buf); + if (!res) + return false; + + myopt.nullPrint = NULL; + myopt.title = _("List of extended statistics"); + myopt.translate_header = true; + + printQuery(res, &myopt, pset.queryFout, false, pset.logfile); + + PQclear(res); + return true; +} + /* * \dC * diff --git a/src/bin/psql/describe.h b/src/bin/psql/describe.h index 6044e3a0828..867e57d851e 100644 --- a/src/bin/psql/describe.h +++ b/src/bin/psql/describe.h @@ -102,6 +102,9 @@ extern bool listExtensions(const char *pattern); /* \dx+ */ extern bool listExtensionContents(const char *pattern); +/* \dX */ +extern bool listExtendedStats(const char *pattern, bool verbose); + /* \dy */ extern bool listEventTriggers(const char *pattern, bool verbose); diff --git a/src/bin/psql/help.c b/src/bin/psql/help.c index 9ec1c4e810c..e42bc8c54e0 100644 --- a/src/bin/psql/help.c +++ b/src/bin/psql/help.c @@ -267,6 +267,7 @@ slashUsage(unsigned short int pager) fprintf(output, _(" \\du[S+] [PATTERN] list roles\n")); fprintf(output, _(" \\dv[S+] [PATTERN] list views\n")); fprintf(output, _(" \\dx[+] [PATTERN] list extensions\n")); + fprintf(output, _(" \\dX[+] [PATTERN] list extended statistics\n")); fprintf(output, _(" \\dy [PATTERN] list event triggers\n")); fprintf(output, _(" \\l[+] [PATTERN] list databases\n")); fprintf(output, _(" \\sf[+] FUNCNAME show a function's definition\n")); diff --git a/src/bin/psql/tab-complete.c b/src/bin/psql/tab-complete.c index 6abcbea9634..17f72650388 100644 --- a/src/bin/psql/tab-complete.c +++ b/src/bin/psql/tab-complete.c @@ -1505,7 +1505,7 @@ psql_completion(const char *text, int start, int end) "\\dF", "\\dFd", "\\dFp", "\\dFt", "\\dg", "\\di", "\\dl", "\\dL", "\\dm", "\\dn", "\\do", "\\dO", "\\dp", "\\dP", "\\dPi", "\\dPt", "\\drds", "\\dRs", "\\dRp", "\\ds", "\\dS", - "\\dt", "\\dT", "\\dv", "\\du", "\\dx", "\\dy", + "\\dt", "\\dT", "\\dv", "\\du", "\\dx", "\\dX", "\\dy", "\\e", "\\echo", "\\ef", "\\elif", "\\else", "\\encoding", "\\endif", "\\errverbose", "\\ev", "\\f", @@ -3974,6 +3974,8 @@ psql_completion(const char *text, int start, int end) COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_views, NULL); else if (TailMatchesCS("\\dx*")) COMPLETE_WITH_QUERY(Query_for_list_of_extensions); + else if (TailMatchesCS("\\dX*")) + COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_statistics, NULL); else if (TailMatchesCS("\\dm*")) COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_matviews, NULL); else if (TailMatchesCS("\\dE*")) diff --git a/src/test/regress/expected/stats_ext.out b/src/test/regress/expected/stats_ext.out index f094731e328..1531d062957 100644 --- a/src/test/regress/expected/stats_ext.out +++ b/src/test/regress/expected/stats_ext.out @@ -1727,6 +1727,100 @@ INSERT INTO tststats.priv_test_tbl CREATE STATISTICS tststats.priv_test_stats (mcv) ON a, b FROM tststats.priv_test_tbl; ANALYZE tststats.priv_test_tbl; +-- Check printing info about extended statistics by \dX +create table stts_t1 (a int, b int); +create statistics stts_1 (ndistinct) on a, b from stts_t1; +create statistics stts_2 (ndistinct, dependencies) on a, b from stts_t1; +create statistics stts_3 (ndistinct, dependencies, mcv) on a, b from stts_t1; +create table stts_t2 (a int, b int, c int); +create statistics stts_4 on b, c from stts_t2; +create table stts_t3 (col1 int, col2 int, col3 int); +create statistics stts_hoge on col1, col2, col3 from stts_t3; +create schema stts_s1; +create schema stts_s2; +create statistics stts_s1.stts_foo on col1, col2 from stts_t3; +create statistics stts_s2.stts_yama (dependencies, mcv) on col1, col3 from stts_t3; +insert into stts_t1 select i,i from generate_series(1,100) i; +analyze stts_t1; +\dX + List of extended statistics + Schema | Name | Definition | Ndistinct | Dependencies | MCV +----------+------------------------+--------------------------------------+-----------+--------------+----------- + public | func_deps_stat | a, b, c FROM functional_dependencies | | built | + public | mcv_lists_arrays_stats | a, b, c FROM mcv_lists_arrays | | | built + public | mcv_lists_bool_stats | a, b, c FROM mcv_lists_bool | | | built + public | mcv_lists_stats | a, b, d FROM mcv_lists | | | built + public | stts_1 | a, b FROM stts_t1 | built | | + public | stts_2 | a, b FROM stts_t1 | built | built | + public | stts_3 | a, b FROM stts_t1 | built | built | built + public | stts_4 | b, c FROM stts_t2 | requested | requested | requested + public | stts_hoge | col1, col2, col3 FROM stts_t3 | requested | requested | requested + stts_s1 | stts_foo | col1, col2 FROM stts_t3 | requested | requested | requested + stts_s2 | stts_yama | col1, col3 FROM stts_t3 | | requested | requested + tststats | priv_test_stats | a, b FROM tststats.priv_test_tbl | | | built +(12 rows) + +\dX stts_? + List of extended statistics + Schema | Name | Definition | Ndistinct | Dependencies | MCV +--------+--------+-------------------+-----------+--------------+----------- + public | stts_1 | a, b FROM stts_t1 | built | | + public | stts_2 | a, b FROM stts_t1 | built | built | + public | stts_3 | a, b FROM stts_t1 | built | built | built + public | stts_4 | b, c FROM stts_t2 | requested | requested | requested +(4 rows) + +\dX *stts_hoge + List of extended statistics + Schema | Name | Definition | Ndistinct | Dependencies | MCV +--------+-----------+-------------------------------+-----------+--------------+----------- + public | stts_hoge | col1, col2, col3 FROM stts_t3 | requested | requested | requested +(1 row) + +\dX+ + List of extended statistics + Schema | Name | Definition | Ndistinct | Dependencies | MCV | Ndistinct_size | Dependencies_size | MCV_size +----------+------------------------+--------------------------------------+-----------+--------------+-----------+----------------+-------------------+------------ + public | func_deps_stat | a, b, c FROM functional_dependencies | | built | | | 106 bytes | + public | mcv_lists_arrays_stats | a, b, c FROM mcv_lists_arrays | | | built | | | 24 kB + public | mcv_lists_bool_stats | a, b, c FROM mcv_lists_bool | | | built | | | 386 bytes + public | mcv_lists_stats | a, b, d FROM mcv_lists | | | built | | | 294 bytes + public | stts_1 | a, b FROM stts_t1 | built | | | 13 bytes | | + public | stts_2 | a, b FROM stts_t1 | built | built | | 13 bytes | 40 bytes | + public | stts_3 | a, b FROM stts_t1 | built | built | built | 13 bytes | 40 bytes | 6126 bytes + public | stts_4 | b, c FROM stts_t2 | requested | requested | requested | 0 bytes | 0 bytes | 0 bytes + public | stts_hoge | col1, col2, col3 FROM stts_t3 | requested | requested | requested | 0 bytes | 0 bytes | 0 bytes + stts_s1 | stts_foo | col1, col2 FROM stts_t3 | requested | requested | requested | 0 bytes | 0 bytes | 0 bytes + stts_s2 | stts_yama | col1, col3 FROM stts_t3 | | requested | requested | | 0 bytes | 0 bytes + tststats | priv_test_stats | a, b FROM tststats.priv_test_tbl | | | built | | | 686 bytes +(12 rows) + +\dX+ stts_? + List of extended statistics + Schema | Name | Definition | Ndistinct | Dependencies | MCV | Ndistinct_size | Dependencies_size | MCV_size +--------+--------+-------------------+-----------+--------------+-----------+----------------+-------------------+------------ + public | stts_1 | a, b FROM stts_t1 | built | | | 13 bytes | | + public | stts_2 | a, b FROM stts_t1 | built | built | | 13 bytes | 40 bytes | + public | stts_3 | a, b FROM stts_t1 | built | built | built | 13 bytes | 40 bytes | 6126 bytes + public | stts_4 | b, c FROM stts_t2 | requested | requested | requested | 0 bytes | 0 bytes | 0 bytes +(4 rows) + +\dX+ *stts_hoge + List of extended statistics + Schema | Name | Definition | Ndistinct | Dependencies | MCV | Ndistinct_size | Dependencies_size | MCV_size +--------+-----------+-------------------------------+-----------+--------------+-----------+----------------+-------------------+---------- + public | stts_hoge | col1, col2, col3 FROM stts_t3 | requested | requested | requested | 0 bytes | 0 bytes | 0 bytes +(1 row) + +\dX+ stts_s2.stts_yama + List of extended statistics + Schema | Name | Definition | Ndistinct | Dependencies | MCV | Ndistinct_size | Dependencies_size | MCV_size +---------+-----------+-------------------------+-----------+--------------+-----------+----------------+-------------------+---------- + stts_s2 | stts_yama | col1, col3 FROM stts_t3 | | requested | requested | | 0 bytes | 0 bytes +(1 row) + +drop table stts_t1, stts_t2, stts_t3; +drop schema stts_s1, stts_s2 cascade; -- User with no access CREATE USER regress_stats_user1; GRANT USAGE ON SCHEMA tststats TO regress_stats_user1; diff --git a/src/test/regress/sql/stats_ext.sql b/src/test/regress/sql/stats_ext.sql index cb08b478a42..c83840298e8 100644 --- a/src/test/regress/sql/stats_ext.sql +++ b/src/test/regress/sql/stats_ext.sql @@ -914,6 +914,37 @@ CREATE STATISTICS tststats.priv_test_stats (mcv) ON a, b ANALYZE tststats.priv_test_tbl; +-- Check printing info about extended statistics by \dX +create table stts_t1 (a int, b int); +create statistics stts_1 (ndistinct) on a, b from stts_t1; +create statistics stts_2 (ndistinct, dependencies) on a, b from stts_t1; +create statistics stts_3 (ndistinct, dependencies, mcv) on a, b from stts_t1; + +create table stts_t2 (a int, b int, c int); +create statistics stts_4 on b, c from stts_t2; + +create table stts_t3 (col1 int, col2 int, col3 int); +create statistics stts_hoge on col1, col2, col3 from stts_t3; + +create schema stts_s1; +create schema stts_s2; +create statistics stts_s1.stts_foo on col1, col2 from stts_t3; +create statistics stts_s2.stts_yama (dependencies, mcv) on col1, col3 from stts_t3; + +insert into stts_t1 select i,i from generate_series(1,100) i; +analyze stts_t1; + +\dX +\dX stts_? +\dX *stts_hoge +\dX+ +\dX+ stts_? +\dX+ *stts_hoge +\dX+ stts_s2.stts_yama + +drop table stts_t1, stts_t2, stts_t3; +drop schema stts_s1, stts_s2 cascade; + -- User with no access CREATE USER regress_stats_user1; GRANT USAGE ON SCHEMA tststats TO regress_stats_user1;