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 ::=
    'DROP' 'VIEW' ( 'IF' 'EXISTS' )? TableNameList RestrictOrCascadeOpt

TableNameList ::=
    TableName ( ',' TableName )*

TableName ::=
    Identifier ('.' Identifier)?

示例

CREATE TABLE t1 (id INT NOT NULL PRIMARY KEY AUTO_INCREMENT, c1 INT NOT NULL);

Query OK, 0 rows affected (0.11 sec)

INSERT INTO t1 (c1) VALUES (1),(2),(3),(4),(5);

Query OK, 5 rows affected (0.03 sec)
Records: 5  Duplicates: 0  Warnings: 0

CREATE VIEW v1 AS SELECT * FROM t1 WHERE c1 > 2;

Query OK, 0 rows affected (0.11 sec)

SELECT * FROM t1;

+----+----+
| id | c1 |
+----+----+
|  1 |  1 |
|  2 |  2 |
|  3 |  3 |
|  4 |  4 |
|  5 |  5 |
+----+----+
5 rows in set (0.00 sec)

SELECT * FROM v1;

+----+----+
| id | c1 |
+----+----+
|  3 |  3 |
|  4 |  4 |
|  5 |  5 |
+----+----+
3 rows in set (0.00 sec)

DROP VIEW v1;

Query OK, 0 rows affected (0.23 sec)

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。如发现任何兼容性差异，请尝试 TiDB 支持资源。

See also

• CREATE VIEW
• DROP TABLE