- DROP VIEW
- 语法图
- 示例
- MySQL 兼容性
- See also
DROP VIEW
DROP VIEW
语句用于从当前所选定的数据库中删除视图对象。视图所引用的基表不受影响。
语法图
DropViewStmt:
TableNameList:
TableName:
示例
mysql> CREATE TABLE t1 (id INT NOT NULL PRIMARY KEY auto_increment, c1 INT NOT NULL);
Query OK, 0 rows affected (0.11 sec)
mysql> INSERT INTO t1 (c1) VALUES (1),(2),(3),(4),(5);
Query OK, 5 rows affected (0.03 sec)
Records: 5 Duplicates: 0 Warnings: 0
mysql> CREATE VIEW v1 AS SELECT * FROM t1 WHERE c1 > 2;
Query OK, 0 rows affected (0.11 sec)
mysql> SELECT * FROM t1;
+----+----+
| id | c1 |
+----+----+
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
+----+----+
5 rows in set (0.00 sec)
mysql> SELECT * FROM v1;
+----+----+
| id | c1 |
+----+----+
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
+----+----+
3 rows in set (0.00 sec)
mysql> DROP VIEW v1;
Query OK, 0 rows affected (0.23 sec)
mysql> SELECT * FROM t1;
+----+----+
| id | c1 |
+----+----+
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
+----+----+
5 rows in set (0.00 sec)
MySQL 兼容性
DROP VIEW
语句与 MySQL 完全兼容。如有任何兼容性差异,请在 GitHub 上提交 issue。
See also
- DROP TABLE
- CREATE VIEW