Details
Major Description
This problem is similar to MDEV-10306
This script:
SET optimizer_switch=_utf8'derived_merge=on'; |
DROP TABLE IF EXISTS t1; |
CREATE TABLE t1 (t VARCHAR(10) CHARSET latin1); |
INSERT INTO t1 VALUES('abcdefghi'); |
SELECT CONCAT(t2,'-',t2) c2 FROM (SELECT LOWER(t) t2 FROM t1) sub; |
returns a wrong result:
+--------------------+
|
| c2 |
|
+--------------------+
|
| abcdefghiabcdefghi |
|
+--------------------+
|
Notice, there is no the expected dash character in the result.
The same problem is repeatable with UPPER:
SELECT CONCAT(t2,'-',t2) c2 FROM (SELECT UPPER(t) t2 FROM t1) sub; |
+--------------------+
|
| c2 |
|
+--------------------+
|
| ABCDEFGHIABCDEFGHI |
|
+--------------------+
|
Attachments
Issue Links
- relates to
-
MDEV-10306 Wrong results with combination of CONCAT, SUBSTR and CONVERT in subquery
-
- Closed
-