Commit 31d43a5e authored by unknown's avatar unknown

Merge sanja.is.com.ua:/home/bell/mysql/mysql-3.23

into sanja.is.com.ua:/home/bell/mysql/work-3.23

parents cfa33018 1f66df4d
......@@ -449,17 +449,19 @@ public:
void update_used_tables()
{
if (!args[0]->maybe_null)
used_tables_cache=0; /* is always false */
else
{
args[0]->update_used_tables();
used_tables_cache=args[0]->used_tables();
used_tables_cache= 0; /* is always false */
cached_value= (longlong) 0;
}
if (!used_tables_cache)
else
{
/* Remember if the value is always NULL or never NULL */
args[0]->val();
cached_value= args[0]->null_value ? (longlong) 1 : (longlong) 0;
args[0]->update_used_tables();
if (!(used_tables_cache=args[0]->used_tables()))
{
/* Remember if the value is always NULL or never NULL */
args[0]->val();
cached_value= args[0]->null_value ? (longlong) 1 : (longlong) 0;
}
}
}
optimize_type select_optimize() const { return OPTIMIZE_NULL; }
......
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