[fix](function) fix Substring/SubReplace error result with input utf8…#40954

Mryange · 2024-09-19T01:59:59Z


mysql [(none)]>select sub_replace("你好世界","a",1);
+-------------------------------------+
| sub_replace('你好世界', 'a', 1)     |
+-------------------------------------+
| �a�好世界                             |
+-------------------------------------+

mysql [(none)]>select SUBSTRING('中文测试',5);
+------------------------------------------+
| substring('中文测试', 5, 2147483647)     |
+------------------------------------------+
| 中文测试                                 |
+------------------------------------------+
1 row in set (0.04 sec)

now
mysql [(none)]>select sub_replace("你好世界","a",1);
+-------------------------------------+
| sub_replace('你好世界', 'a', 1)     |
+-------------------------------------+
| 你a世界                             |
+-------------------------------------+
1 row in set (0.05 sec)

mysql [(none)]>select SUBSTRING('中文测试',5);
+------------------------------------------+
| substring('中文测试', 5, 2147483647)     |
+------------------------------------------+
|                                          |
+------------------------------------------+
1 row in set (0.13 sec)

Proposed changes

Issue Number: close #xxx

… string (apache#40929) ``` mysql [(none)]>select sub_replace("你好世界","a",1); +-------------------------------------+ | sub_replace('你好世界', 'a', 1) | +-------------------------------------+ | �a�好世界 | +-------------------------------------+ mysql [(none)]>select SUBSTRING('中文测试',5); +------------------------------------------+ | substring('中文测试', 5, 2147483647) | +------------------------------------------+ | 中文测试 | +------------------------------------------+ 1 row in set (0.04 sec) now mysql [(none)]>select sub_replace("你好世界","a",1); +-------------------------------------+ | sub_replace('你好世界', 'a', 1) | +-------------------------------------+ | 你a世界 | +-------------------------------------+ 1 row in set (0.05 sec) mysql [(none)]>select SUBSTRING('中文测试',5); +------------------------------------------+ | substring('中文测试', 5, 2147483647) | +------------------------------------------+ | | +------------------------------------------+ 1 row in set (0.13 sec) ```

doris-robot · 2024-09-19T02:00:04Z

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Mryange · 2024-09-19T02:00:32Z

run buildall

github-actions · 2024-09-19T02:07:05Z