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MDEV-22236 JSON_ARRAYAGG query leads to SIGSEGV in Charset::swap on optimized builds.

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The json_arrayagg::val_str should handle NULL result.
This commit is contained in:
Alexey Botchkov
2020-04-28 16:08:18 +04:00
parent 0cd2b4c249
commit e545a60bf4
3 changed files with 24 additions and 7 deletions
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8
mysql-test/main/func_json.test
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@ -732,3 +732,11 @@ DROP TABLE t1;
--echo #
--echo # End of 10.4 tests
--echo #
-- echo #
-- echo # MDEV-16620 JSON_ARRAYAGG
-- echo #
CREATE TABLE t1 (a INT);
SELECT JSON_ARRAYAGG(a) FROM t1;
DROP TABLE t1;