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new lock for multiupdate:

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- open and create derived tables
- detect which tables should be locked for write
- lock and fill derived tables
some unitialized variables fixed
This commit is contained in:
bell@sanja.is.com.ua
2004-11-05 17:29:47 +02:00
parent b2dd380beb
commit 064b02203f
15 changed files with 216 additions and 155 deletions
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6
sql/sql_prepare.cc
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@ -1314,7 +1314,11 @@ static int mysql_test_multiupdate(Prepared_statement *stmt,
int res;
if ((res= multi_update_precheck(stmt->thd, tables)))
return res;
return select_like_statement_test(stmt, tables, &mysql_multi_update_prepare);
/*
here we do not pass tables for opening, tables will be opened and locked
by mysql_multi_update_prepare
*/
return select_like_statement_test(stmt, 0, &mysql_multi_update_prepare);
}