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Diffstat (limited to 'mysql-test/t/func_gconcat.test')
| -rw-r--r-- | mysql-test/t/func_gconcat.test | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/mysql-test/t/func_gconcat.test b/mysql-test/t/func_gconcat.test index 7643676ea61..42a30760a86 100644 --- a/mysql-test/t/func_gconcat.test +++ b/mysql-test/t/func_gconcat.test @@ -803,3 +803,21 @@ create table t1 (a char(1) character set utf8); insert into t1 values ('a'),('b'); select 1 from t1 where a in (select group_concat(a) from t1); drop table t1; + +# +# MDEV-7820 Server crashes in in my_strcasecmp_utf8 on subquery in ORDER BY clause of GROUP_CONCAT +# +CREATE TABLE t1 (f1 VARCHAR(10)) ENGINE=MyISAM; +INSERT INTO t1 VALUES ('a'),('b'); + +CREATE TABLE t2 (f2 VARCHAR(10)) ENGINE=MyISAM; +INSERT INTO t2 VALUES ('c'); + +CREATE TABLE t3 (f3 VARCHAR(10)) ENGINE=MyISAM; +INSERT INTO t3 VALUES ('d'),('e'); + +SELECT GROUP_CONCAT( f2 ORDER BY ( f2 IN ( SELECT f1 FROM t1 WHERE f1 <= f2 ) ) ) AS field +FROM ( SELECT * FROM t2 ) AS sq2, t3 +ORDER BY field; + +drop table t3, t2, t1; |