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Merge bk-internal.mysql.com:/home/bk/mysql-5.0

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into mysql.com:/opt/local/work/mysql-5.0-join_free2push
This commit is contained in:
konstantin@mysql.com
2005-06-24 22:48:46 +04:00
parent 4ab4ee9c7c 56a37f8e07
commit aa300fa71b
4 changed files with 115 additions and 85 deletions
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10
sql/sql_select.h
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@ -325,7 +325,7 @@ class JOIN :public Sql_alloc
int optimize();
int reinit();
void exec();
int cleanup();
int destroy();
void restore_tmp();
bool alloc_func_list();
bool make_sum_func_list(List<Item> &all_fields, List<Item> &send_fields,
@ -349,7 +349,15 @@ class JOIN :public Sql_alloc
int rollup_send_data(uint idx);
int rollup_write_data(uint idx, TABLE *table);
bool test_in_subselect(Item **where);
/*
Release memory and, if possible, the open tables held by this execution
plan (and nested plans). It's used to release some tables before
the end of execution in order to increase concurrency and reduce
memory consumption.
*/
void join_free(bool full);
/* Cleanup this JOIN, possibly for reuse */
void cleanup(bool full);
void clear();
bool save_join_tab();
bool send_row_on_empty_set()