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MDEV-14221 Assertion `0' failed in Item::field_type_for_temporal_comparison

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Item_null_result did not override type_handler() because of a wrong merge
of d8a9b524f2e4efec675725c4c32acefe1d8dcb15 (MDEV-14221) from 10.1.

Overriding type_handler().

Removing the old style field_type() method. It's not relevant any more.
This commit is contained in:
Alexander Barkov 2020-05-22 16:31:16 +04:00
parent dc22acfdb6
commit ea7830eef4
3 changed files with 25 additions and 2 deletions
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11
mysql-test/main/type_datetime_hires.result
View File

@ -889,5 +889,16 @@ Warning 1411 Incorrect date value: '0000-02-28' for function round(datetime)
Warning 1411 Incorrect date value: '0000-12-31' for function round(datetime)
DROP TABLE t1;
#
# MDEV-20984 Possibly wrong result or Assertion `args[0]->type_handler()->mysql_timestamp_type() == MYSQL_TIMESTAMP_DATETIME' failed in Item_func_round::date_op
#
CREATE TABLE t1 (a DATETIME);
INSERT INTO t1 VALUES ('1979-01-03 10:33:32'),('2012-12-12 12:12:12');
SELECT ROUND(a) AS f FROM t1 GROUP BY a WITH ROLLUP;
f
1979-01-03 10:33:32
2012-12-12 12:12:12
NULL
DROP TABLE t1;
#
# End of 10.4 tests
#

10
mysql-test/main/type_datetime_hires.test
View File

@ -146,6 +146,16 @@ SELECT a, ROUND(a,-6) FROM t1;
DROP TABLE t1;
--echo #
--echo # MDEV-20984 Possibly wrong result or Assertion `args[0]->type_handler()->mysql_timestamp_type() == MYSQL_TIMESTAMP_DATETIME' failed in Item_func_round::date_op
--echo #
CREATE TABLE t1 (a DATETIME);
INSERT INTO t1 VALUES ('1979-01-03 10:33:32'),('2012-12-12 12:12:12');
SELECT ROUND(a) AS f FROM t1 GROUP BY a WITH ROLLUP;
DROP TABLE t1;
--echo #
--echo # End of 10.4 tests
--echo #

6
sql/item.h
View File

@ -3654,9 +3654,11 @@ public:
Field *result_field;
Item_null_result(THD *thd): Item_null(thd), result_field(0) {}
bool is_result_field() { return result_field != 0; }
enum_field_types field_type() const
const Type_handler *type_handler() const
{
return result_field->type();
if (result_field)
return result_field->type_handler();
return &type_handler_null;
}
Field *create_tmp_field_ex(TABLE *table, Tmp_field_src *src,
const Tmp_field_param *param)