mysql> SELECT 1+1;     # This comment continues to the end of line
+-----+
| 1+1 |
+-----+
|   2 |
+-----+
1 row in set (0.01 sec)

mysql> SELECT 1+1;     -- This comment continues to the end of line
+-----+
| 1+1 |
+-----+
|   2 |
+-----+
1 row in set (0.00 sec)

mysql> SELECT 1 /* this is an in-line comment */ + 1;
+--------+
| 1 + 1 |
+--------+
|      2 |
+--------+
1 row in set (0.00 sec)

MySQL 連線工具mysql中的語句註釋方法

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