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
DROPVIEWIFEXISTSTableNameListRestrictOrCascadeOpt
TableNameList
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

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