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CREATE VIEW -- define a new view


CREATE [ OR REPLACE ] VIEW name [ ( column_name [, ...] ) ] AS query


CREATE VIEW defines a view of a query. The view is not physically materialized. Instead, the query is run every time the view is referenced in a query.

CREATE OR REPLACE VIEW is similar, but if a view of the same name already exists, it is replaced. You can only replace a view with a new query that generates the identical set of columns (i.e., same column names and data types).

If a schema name is given (for example, CREATE VIEW myschema.myview ...) then the view is created in the specified schema. Otherwise it is created in the current schema. The view name must be distinct from the name of any other view, table, sequence, or index in the same schema.



The name (optionally schema-qualified) of a view to be created.


An optional list of names to be used for columns of the view. If not given, the column names are deduced from the query.


A query (that is, a SELECT statement) which will provide the columns and rows of the view.

Refer to SELECT for more information about valid queries.


Currently, views are read only: the system will not allow an insert, update, or delete on a view. You can get the effect of an updatable view by creating rules that rewrite inserts, etc. on the view into appropriate actions on other tables. For more information see CREATE RULE.

Use the DROP VIEW statement to drop views.

Be careful that the names and types of the view's columns will be assigned the way you want. For example,

CREATE VIEW vista AS SELECT 'Hello World';

is bad form in two ways: the column name defaults to ?column?, and the column data type defaults to unknown. If you want a string literal in a view's result, use something like

CREATE VIEW vista AS SELECT text 'Hello World' AS hello;

Access to tables referenced in the view is determined by permissions of the view owner. However, functions called in the view are treated the same as if they had been called directly from the query using the view. Therefore the user of a view must have permissions to call all functions used by the view.


Create a view consisting of all comedy films:

    SELECT *
    FROM films
    WHERE kind = 'Comedy';


The SQL standard specifies some additional capabilities for the CREATE VIEW statement:

CREATE VIEW name [ ( column [, ...] ) ]
    AS query

The optional clauses for the full SQL command are:


This option has to do with updatable views. All INSERT and UPDATE commands on the view will be checked to ensure data satisfy the view-defining condition (that is, the new data would be visible through the view). If they do not, the update will be rejected.


Check for integrity on this view.


Check for integrity on this view and on any dependent view. CASCADE is assumed if neither CASCADE nor LOCAL is specified.

CREATE OR REPLACE VIEW is a PostgreSQL language extension.

See Also