Commit 0039944e authored by Evgeny Potemkin's avatar Evgeny Potemkin

Additional fix for the bug#43668.

Arg_comparator now takes into account that some of
optimizations aren't done in the PREPARE stmt.
parent 8af68021
......@@ -960,12 +960,23 @@ int Arg_comparator::set_cmp_func(Item_result_field *owner_arg,
(*b)->field_type() == MYSQL_TYPE_YEAR))
{
is_nulls_eq= is_owner_equal_func();
year_as_datetime= FALSE;
if ((*a)->is_datetime())
{
year_as_datetime= TRUE;
get_value_a_func= &get_datetime_value;
} else if ((*a)->field_type() == MYSQL_TYPE_YEAR)
get_value_a_func= &get_year_value;
else
{
/*
Because convert_constant_item is called only for EXECUTE in PS mode
the value of get_value_x_func set in PREPARE might be not
valid for EXECUTE.
*/
get_value_a_func= NULL;
}
if ((*b)->is_datetime())
{
......@@ -973,6 +984,8 @@ int Arg_comparator::set_cmp_func(Item_result_field *owner_arg,
get_value_b_func= &get_datetime_value;
} else if ((*b)->field_type() == MYSQL_TYPE_YEAR)
get_value_b_func= &get_year_value;
else
get_value_b_func= NULL;
func= &Arg_comparator::compare_year;
return 0;
......
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