MYSQL分組時條件都必須在查詢中的設置

MySQL

mysql> SELECT @@sql_mode;
±----------------------------------------------------------------------------------------------------------------------+
| @@sql_mode |
±----------------------------------------------------------------------------------------------------------------------+
| ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION |
±----------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)

SET sql_mode = ‘STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION’