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Backport of revno: 2617.68.9

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Bug #43272 HANDLER SQL command does not work under LOCK TABLES

HANDLER commands are now explicitly disallowed in LOCK TABLES mode.

Before, HANDLER OPEN gave the misleading error message: "Table x was 
not locked with LOCK TABLES". This patch changes HANDLER OPEN/READ/CLOSE 
to give ER_LOCK_OR_ACTIVE_TRANSACTION "Can't execute the given command 
because you have active locked tables or an active transaction" in
LOCK TABLES mode.

Test case added to lock.test.
This commit is contained in:
Jon Olav Hauglid
2009-12-08 15:56:06 +01:00
parent c0b78cc47a
commit 19ff2445b1
3 changed files with 55 additions and 0 deletions
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16
sql/sql_handler.cc
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@ -201,6 +201,11 @@ bool mysql_ha_open(THD *thd, TABLE_LIST *tables, bool reopen)
tables->db, tables->table_name, tables->alias,
(int) reopen));
if (thd->locked_tables_mode)
{
my_error(ER_LOCK_OR_ACTIVE_TRANSACTION, MYF(0));
DBUG_RETURN(TRUE);
}
if (tables->schema_table)
{
my_error(ER_WRONG_USAGE, MYF(0), "HANDLER OPEN",
@ -386,6 +391,11 @@ bool mysql_ha_close(THD *thd, TABLE_LIST *tables)
DBUG_PRINT("enter",("'%s'.'%s' as '%s'",
tables->db, tables->table_name, tables->alias));
if (thd->locked_tables_mode)
{
my_error(ER_LOCK_OR_ACTIVE_TRANSACTION, MYF(0));
DBUG_RETURN(TRUE);
}
if ((hash_tables= (TABLE_LIST*) my_hash_search(&thd->handler_tables_hash,
(uchar*) tables->alias,
strlen(tables->alias) + 1)))
@ -448,6 +458,12 @@ bool mysql_ha_read(THD *thd, TABLE_LIST *tables,
DBUG_PRINT("enter",("'%s'.'%s' as '%s'",
tables->db, tables->table_name, tables->alias));
if (thd->locked_tables_mode)
{
my_error(ER_LOCK_OR_ACTIVE_TRANSACTION, MYF(0));
DBUG_RETURN(TRUE);
}
thd->lex->select_lex.context.resolve_in_table_list_only(tables);
list.push_front(new Item_field(&thd->lex->select_lex.context,
NULL, NULL, "*"));