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Subquery cache (MWL#66) added.
libmysqld/Makefile.am: The new file added. mysql-test/r/index_merge_myisam.result: subquery_cache optimization option added. mysql-test/r/myisam_mrr.result: subquery_cache optimization option added. mysql-test/r/subquery_cache.result: The subquery cache tests added. mysql-test/r/subselect3.result: Subquery cache switched off to avoid changing read statistics. mysql-test/r/subselect3_jcl6.result: Subquery cache switched off to avoid changing read statistics. mysql-test/r/subselect_no_mat.result: subquery_cache optimization option added. mysql-test/r/subselect_no_opts.result: subquery_cache optimization option added. mysql-test/r/subselect_no_semijoin.result: subquery_cache optimization option added. mysql-test/r/subselect_sj.result: subquery_cache optimization option added. mysql-test/r/subselect_sj_jcl6.result: subquery_cache optimization option added. mysql-test/t/subquery_cache.test: The subquery cache tests added. mysql-test/t/subselect3.test: Subquery cache switched off to avoid changing read statistics. sql/CMakeLists.txt: The new file added. sql/Makefile.am: The new files added. sql/item.cc: Expression cache item (Item_cache_wrapper) added. Item_ref and Item_field fixed for correct usage of result field and fast resolwing in SP. sql/item.h: Expression cache item (Item_cache_wrapper) added. Item_ref and Item_field fixed for correct usage of result field and fast resolwing in SP. sql/item_cmpfunc.cc: Subquery cache added. sql/item_cmpfunc.h: Subquery cache added. sql/item_subselect.cc: Subquery cache added. sql/item_subselect.h: Subquery cache added. sql/item_sum.cc: Registration of subquery parameters added. sql/mysql_priv.h: subquery_cache optimization option added. sql/mysqld.cc: subquery_cache optimization option added. sql/opt_range.cc: Fix due to subquery cache. sql/opt_subselect.cc: Parameters of the function cahnged. sql/procedure.h: .h file guard added. sql/sql_base.cc: Registration of subquery parameters added. sql/sql_class.cc: Option to allow add indeces to temporary table. sql/sql_class.h: Item iterators added. Option to allow add indeces to temporary table. sql/sql_expression_cache.cc: Expression cache for caching subqueries added. sql/sql_expression_cache.h: Expression cache for caching subqueries added. sql/sql_lex.cc: Registration of subquery parameters added. sql/sql_lex.h: Registration of subqueries and subquery parameters added. sql/sql_select.cc: Subquery cache added. sql/sql_select.h: Subquery cache added. sql/sql_union.cc: A new parameter to the function added. sql/sql_update.cc: A new parameter to the function added. sql/table.cc: Procedures to manage temporarty tables index added. sql/table.h: Procedures to manage temporarty tables index added. storage/maria/ha_maria.cc: Fix of handler to allow destoy a table in case of error during the table creation. storage/maria/ha_maria.h: .h file guard added. storage/myisam/ha_myisam.cc: Fix of handler to allow destoy a table in case of error during the table creation.
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@ -570,12 +570,13 @@ protected:
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#define OPTIMIZER_SWITCH_SEMIJOIN 256
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#define OPTIMIZER_SWITCH_PARTIAL_MATCH_ROWID_MERGE 512
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#define OPTIMIZER_SWITCH_PARTIAL_MATCH_TABLE_SCAN 1024
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#define OPTIMIZER_SWITCH_SUBQUERY_CACHE (1<<11)
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#ifdef DBUG_OFF
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# define OPTIMIZER_SWITCH_LAST 2048
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# define OPTIMIZER_SWITCH_LAST (1<<12)
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#else
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# define OPTIMIZER_SWITCH_TABLE_ELIMINATION 2048
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# define OPTIMIZER_SWITCH_LAST 4096
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# define OPTIMIZER_SWITCH_TABLE_ELIMINATION (1<<12)
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# define OPTIMIZER_SWITCH_LAST (1<<13)
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#endif
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#ifdef DBUG_OFF
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@ -590,7 +591,8 @@ protected:
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OPTIMIZER_SWITCH_MATERIALIZATION | \
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OPTIMIZER_SWITCH_SEMIJOIN | \
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OPTIMIZER_SWITCH_PARTIAL_MATCH_ROWID_MERGE|\
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OPTIMIZER_SWITCH_PARTIAL_MATCH_TABLE_SCAN)
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OPTIMIZER_SWITCH_PARTIAL_MATCH_TABLE_SCAN|\
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OPTIMIZER_SWITCH_SUBQUERY_CACHE)
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#else
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# define OPTIMIZER_SWITCH_DEFAULT (OPTIMIZER_SWITCH_INDEX_MERGE | \
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OPTIMIZER_SWITCH_INDEX_MERGE_UNION | \
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@ -603,7 +605,8 @@ protected:
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OPTIMIZER_SWITCH_MATERIALIZATION | \
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OPTIMIZER_SWITCH_SEMIJOIN | \
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OPTIMIZER_SWITCH_PARTIAL_MATCH_ROWID_MERGE|\
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OPTIMIZER_SWITCH_PARTIAL_MATCH_TABLE_SCAN)
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OPTIMIZER_SWITCH_PARTIAL_MATCH_TABLE_SCAN|\
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OPTIMIZER_SWITCH_SUBQUERY_CACHE)
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#endif
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/*
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@ -683,7 +686,8 @@ enum enum_parsing_place
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SELECT_LIST,
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IN_WHERE,
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IN_ON,
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IN_GROUP_BY
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IN_GROUP_BY,
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PARSING_PLACE_SIZE /* always should be the last */
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};
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struct st_table;
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@ -925,6 +929,7 @@ bool general_log_write(THD *thd, enum enum_server_command command,
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#ifdef MYSQL_SERVER
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#include "sql_servers.h"
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#include "opt_range.h"
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#include "sql_expression_cache.h"
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#ifdef HAVE_QUERY_CACHE
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struct Query_cache_query_flags
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@ -1258,6 +1263,9 @@ bool mysql_select(THD *thd, Item ***rref_pointer_array,
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Item *having, ORDER *proc_param, ulonglong select_type,
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select_result *result, SELECT_LEX_UNIT *unit,
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SELECT_LEX *select_lex);
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int join_read_key2(THD *thd, struct st_join_table *tab, TABLE *table,
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struct st_table_ref *table_ref);
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void free_underlaid_joins(THD *thd, SELECT_LEX *select);
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bool mysql_explain_union(THD *thd, SELECT_LEX_UNIT *unit,
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select_result *result);
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@ -1277,6 +1285,7 @@ Field *create_tmp_field(THD *thd, TABLE *table,Item *item, Item::Type type,
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bool table_cant_handle_bit_fields,
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bool make_copy_field,
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uint convert_blob_length);
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bool open_tmp_table(TABLE *table);
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void sp_prepare_create_field(THD *thd, Create_field *sql_field);
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int prepare_create_field(Create_field *sql_field,
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uint *blob_columns,
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@ -1832,7 +1841,7 @@ bool close_cached_connection_tables(THD *thd, bool wait_for_refresh,
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bool have_lock = FALSE);
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void copy_field_from_tmp_record(Field *field,int offset);
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bool fill_record(THD *thd, Field **field, List<Item> &values,
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bool ignore_errors);
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bool ignore_errors, bool use_value);
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bool fill_record_n_invoke_before_triggers(THD *thd, List<Item> &fields,
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List<Item> &values,
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bool ignore_errors,
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