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CREATE VIEW

The CREATE VIEW statement saves a SELECT statement as a queryable object, similar to a table. Views in TiDB are non-materialized. This means that as a view is queried, TiDB will internally rewrite the query to combine the view definition with the SQL query.

Synopsis

CreateViewStmt:

CreateViewStmt

OrReplace:

OrReplace

ViewAlgorithm:

ViewAlgorithm

ViewDefiner:

ViewDefiner

ViewSQLSecurity:

ViewSQLSecurity

ViewName:

ViewName

ViewFieldList:

ViewFieldList

ViewCheckOption:

ViewCheckOption

Examples

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> INSERT INTO t1 (c1) VALUES (6); Query OK, 1 row affected (0.01 sec) mysql> SELECT * FROM v1; +----+----+ | id | c1 | +----+----+ | 3 | 3 | | 4 | 4 | | 5 | 5 | | 6 | 6 | +----+----+ 4 rows in set (0.00 sec) mysql> INSERT INTO v1 (c1) VALUES (7); ERROR 1105 (HY000): insert into view v1 is not supported now.

MySQL compatibility

  • Views in TiDB are not currently insertable or updatable.

See also

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