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Added some compatibility modes (for the future)

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This commit is contained in:
monty@mashka.mysql.fi
2002-11-20 21:44:32 +02:00
parent 5601da7ad3
commit f86d328927
7 changed files with 89 additions and 23 deletions
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20
sql/sql_delete.cc
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@@ -35,18 +35,12 @@ int mysql_delete(THD *thd, TABLE_LIST *table_list, COND *conds, ORDER *order,
SQL_SELECT *select=0;
READ_RECORD info;
bool using_limit=limit != HA_POS_ERROR;
bool using_transactions, safe_update;
bool using_transactions, safe_update, const_cond;
ha_rows deleted;
DBUG_ENTER("mysql_delete");
if (!table_list->db)
table_list->db=thd->db;
if (((safe_update=thd->options & OPTION_SAFE_UPDATES)) && !conds)
{
send_error(thd,ER_UPDATE_WITHOUT_KEY_IN_SAFE_MODE);
DBUG_RETURN(1);
}
if (!(table = open_ltable(thd,table_list, lock_type)))
DBUG_RETURN(-1);
table->file->info(HA_STATUS_VARIABLE | HA_STATUS_NO_LOCK);
@@ -56,9 +50,17 @@ int mysql_delete(THD *thd, TABLE_LIST *table_list, COND *conds, ORDER *order,
setup_ftfuncs(&thd->lex.select_lex))
DBUG_RETURN(-1);
const_cond= (!conds || conds->const_item());
safe_update=test(thd->options & OPTION_SAFE_UPDATES);
if (safe_update && const_cond)
{
send_error(thd,ER_UPDATE_WITHOUT_KEY_IN_SAFE_MODE);
DBUG_RETURN(1);
}
/* Test if the user wants to delete all rows */
if (!using_limit && (!conds || conds->const_item()) &&
!(specialflag & (SPECIAL_NO_NEW_FUNC | SPECIAL_SAFE_MODE)) && !safe_update)
if (!using_limit && const_cond &&
!(specialflag & (SPECIAL_NO_NEW_FUNC | SPECIAL_SAFE_MODE)))
{
deleted= table->file->records;
if (!(error=table->file->delete_all_rows()))