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Merge of 5.1-main into 5.1-maria. There were no changes to storage/myisam, or mysql-test/t/*myisam*.

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However there were three new tests mysql-test/suite/parts/t/partition*myisam.test, of which I make here
copies for Maria.
This commit is contained in:
Guilhem Bichot
2008-11-21 15:21:50 +01:00
parent 8d96bcda72 1d521f6c20
commit 33b194c36e
400 changed files with 265530 additions and 236652 deletions
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35
sql/sql_update.cc
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@ -1039,7 +1039,7 @@ reopen_tables:
correct order of statements. Otherwise, we use a TL_READ lock to
improve performance.
*/
tl->lock_type= using_update_log ? TL_READ_NO_INSERT : TL_READ;
tl->lock_type= read_lock_type_for_table(thd, table);
tl->updating= 0;
/* Update TABLE::lock_type accordingly. */
if (!tl->placeholder() && !using_lock_tables)
@ -1076,11 +1076,14 @@ reopen_tables:
}
/* now lock and fill tables */
if (lock_tables(thd, table_list, table_count, &need_reopen))
if (!thd->stmt_arena->is_stmt_prepare() &&
lock_tables(thd, table_list, table_count, &need_reopen))
{
if (!need_reopen)
DBUG_RETURN(TRUE);
DBUG_PRINT("info", ("lock_tables failed, reopening"));
/*
We have to reopen tables since some of them were altered or dropped
during lock_tables() or something was done with their triggers.
@ -1096,6 +1099,34 @@ reopen_tables:
for (TABLE_LIST *tbl= table_list; tbl; tbl= tbl->next_global)
tbl->cleanup_items();
/*
To not to hog memory (as a result of the
unit->reinit_exec_mechanism() call below):
*/
lex->unit.cleanup();
for (SELECT_LEX *sl= lex->all_selects_list;
sl;
sl= sl->next_select_in_list())
{
SELECT_LEX_UNIT *unit= sl->master_unit();
unit->reinit_exec_mechanism(); // reset unit->prepared flags
/*
Reset 'clean' flag back to force normal execution of
unit->cleanup() in Prepared_statement::cleanup_stmt()
(call to lex->unit.cleanup() above sets this flag to TRUE).
*/
unit->unclean();
}
/*
Also we need to cleanup Natural_join_column::table_field items.
To not to traverse a join tree we will cleanup whole
thd->free_list (in PS execution mode that list may not contain
items from 'fields' list, so the cleanup above is necessary to.
*/
cleanup_items(thd->free_list);
close_tables_for_reopen(thd, &table_list);
goto reopen_tables;
}