DELETE
DELETE 语句用于从指定的表中删除行。
语法图
1. DeleteFromStmt ::=
2. 'DELETE' TableOptimizerHints PriorityOpt QuickOptional IgnoreOptional ( 'FROM' ( TableName TableAsNameOpt IndexHintListOpt WhereClauseOptional OrderByOptional LimitClause | TableAliasRefList 'USING' TableRefs WhereClauseOptional ) | TableAliasRefList 'FROM' TableRefs WhereClauseOptional )
示例
1. CREATE TABLE t1 (id INT NOT NULL PRIMARY KEY AUTO_INCREMENT, c1 INT NOT NULL);
1. Query OK, 0 rows affected (0.11 sec)
1. INSERT INTO t1 (c1) VALUES (1),(2),(3),(4),(5);
1. Query OK, 5 rows affected (0.03 sec)
2. Records: 5 Duplicates: 0 Warnings: 0
1. SELECT * FROM t1;
1. +----+----+
2. | id | c1 |
3. +----+----+
4. | 1 | 1 |
5. | 2 | 2 |
6. | 3 | 3 |
7. | 4 | 4 |
8. | 5 | 5 |
9. +----+----+
10. 5 rows in set (0.00 sec)
1. DELETE FROM t1 WHERE id = 4;
1. Query OK, 1 row affected (0.02 sec)
1. SELECT * FROM t1;
1. +----+----+
2. | id | c1 |
3. +----+----+
4. | 1 | 1 |
5. | 2 | 2 |
6. | 3 | 3 |
7. | 5 | 5 |
8. +----+----+
9. 4 rows in set (0.00 sec)
MySQL 兼容性
DELETE 语句与 MySQL 完全兼容。如发现任何兼容性差异,请在 GitHub 上提交 issue。
