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Merge spetrunia@bk-internal.mysql.com:/home/bk/mysql-5.0-opt

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into  mysql.com:/home/psergey/mysql-5.0-bug29582


sql/sql_select.cc:
  Auto merged
sql/sql_select.h:
  Auto merged
This commit is contained in:
unknown
2007-07-31 15:24:22 +04:00
parent a9610aa0e1 8a68e7d2dc
commit a66cb1f27a
3 changed files with 51 additions and 18 deletions
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10
sql/sql_select.h
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@@ -277,6 +277,14 @@ public:
SELECT_LEX_UNIT *unit;
// select that processed
SELECT_LEX *select_lex;
/*
TRUE <=> optimizer must not mark any table as a constant table.
This is needed for subqueries in form "a IN (SELECT .. UNION SELECT ..):
when we optimize the select that reads the results of the union from a
temporary table, we must not mark the temp. table as constant because
the number of rows in it may vary from one subquery execution to another.
*/
bool no_const_tables;
JOIN *tmp_join; // copy of this JOIN to be used with temporary tables
ROLLUP rollup; // Used with rollup
@@ -406,6 +414,8 @@ public:
tmp_table_param.init();
tmp_table_param.end_write_records= HA_POS_ERROR;
rollup.state= ROLLUP::STATE_NONE;
no_const_tables= FALSE;
}
int prepare(Item ***rref_pointer_array, TABLE_LIST *tables, uint wind_num,