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MDEV-16174 Assertion `0' failed in Type_handler_string_result::make_sort_key(uchar*, Item*, const SORT_FIELD_ATTR*, Sort_param*)

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maybe_null should be always set to TRUE in
Item_func_json_array_append::fix_length_and_dec()
This commit is contained in:
Alexey Botchkov
2018-11-09 22:55:34 +04:00
parent f5bcf788e7
commit 5cfb043d29
3 changed files with 28 additions and 0 deletions
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14
mysql-test/r/func_json.result
View File

@ -810,3 +810,17 @@ SET @`json` := NULL, @`value` := NULL;
SELECT JSON_MERGE('[1]', '[]');
JSON_MERGE('[1]', '[]')
[1]
#
# MDEV-16174 Assertion `0' failed in Type_handler_string_result::
# make_sort_key(uchar*, Item*, const SORT_FIELD_ATTR*, Sort_param*)
#
SET sql_mode='';
CREATE TABLE t1 (fld varchar(16) NOT NULL);
CREATE TABLE t2 SELECT JSON_ARRAY_INSERT(fld, '$.[0]', '0') FROM t1;
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`JSON_ARRAY_INSERT(fld, '$.[0]', '0')` varchar(25) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t1, t2;
SET sql_mode=default;

13
mysql-test/t/func_json.test
View File

@ -468,3 +468,16 @@ SET @`json` := NULL, @`value` := NULL;
--echo #
SELECT JSON_MERGE('[1]', '[]');
--echo #
--echo # MDEV-16174 Assertion `0' failed in Type_handler_string_result::
--echo # make_sort_key(uchar*, Item*, const SORT_FIELD_ATTR*, Sort_param*)
--echo #
SET sql_mode='';
CREATE TABLE t1 (fld varchar(16) NOT NULL);
CREATE TABLE t2 SELECT JSON_ARRAY_INSERT(fld, '$.[0]', '0') FROM t1;
SHOW CREATE TABLE t2;
DROP TABLE t1, t2;
SET sql_mode=default;

1
sql/item_jsonfunc.cc
View File

@ -1562,6 +1562,7 @@ bool Item_func_json_array_append::fix_length_and_dec()
}
fix_char_length_ulonglong(char_length);
maybe_null= 1;
return FALSE;
}