---
title: CREATE VIEW | TiDB SQL Statement Reference
summary: An overview of the usage of CREATE VIEW for the TiDB database.
aliases: ['/docs/dev/sql-statements/sql-statement-create-view/','/docs/dev/reference/sql/statements/create-view/']
---

# 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

```ebnf+diagram
CreateViewStmt ::=
    'CREATE' OrReplace ViewAlgorithm ViewDefiner ViewSQLSecurity 'VIEW' ViewName ViewFieldList 'AS' CreateViewSelectOpt ViewCheckOption

OrReplace ::=
    ( 'OR' 'REPLACE' )?

ViewAlgorithm ::=
    ( 'ALGORITHM' '=' ( 'UNDEFINED' | 'MERGE' | 'TEMPTABLE' ) )?

ViewDefiner ::=
    ( 'DEFINER' '=' Username )?

ViewSQLSecurity ::=
    ( 'SQL' 'SECURITY' ( 'DEFINER' | 'INVOKER' ) )?

ViewName ::= TableName

ViewFieldList ::=
    ( '(' Identifier ( ',' Identifier )* ')' )?

ViewCheckOption ::=
    ( 'WITH' ( 'CASCADED' | 'LOCAL' ) 'CHECK' 'OPTION' )?
```

## Examples

```sql
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

* Currently, any view in TiDB cannot be inserted or updated (that is, `INSERT VIEW` and `UPDATE VIEW` are not supported). `WITH CHECK OPTION` is only syntactically compatible but does not take effect.
* Currently, the view in TiDB does not support `ALTER VIEW`, but you can use `CREATE OR REPLACE` instead.
* Currently, the `ALGORITHM` field is only syntactically compatible in TiDB but does not take effect. TiDB currently only supports the MERGE algorithm.

## See also

* [DROP VIEW](/sql-statements/sql-statement-drop-view.md)
* [CREATE TABLE](/sql-statements/sql-statement-create-table.md)
* [SHOW CREATE TABLE](/sql-statements/sql-statement-show-create-table.md)
* [DROP TABLE](/sql-statements/sql-statement-drop-table.md)