NAME¶

CREATE_FOREIGN_TABLE - define a new foreign table

SYNOPSIS¶

CREATE FOREIGN TABLE [ IF NOT EXISTS ] table_name ( [


  { column_name data_type [ OPTIONS ( option 'value' [, ... ] ) ] [ NULL | NOT NULL ] }


    [, ... ]
] )


  SERVER server_name
[ OPTIONS ( option 'value' [, ... ] ) ]

DESCRIPTION¶

CREATE FOREIGN TABLE will create a new foreign table in the current database. The table will be owned by the user issuing the command.

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

CREATE FOREIGN TABLE also automatically creates a data type that represents the composite type corresponding to one row of the foreign table. Therefore, foreign tables cannot have the same name as any existing data type in the same schema.

To be able to create a table, you must have USAGE privilege on all column types.

PARAMETERS¶

IF NOT EXISTS

table_name

column_name

data_type

NOT NULL

NULL

server_name

OPTIONS ( option 'value' [, ...] )

EXAMPLES¶

Create foreign table films with film_server:

CREATE FOREIGN TABLE films (


    code        char(5) NOT NULL,


    title       varchar(40) NOT NULL,


    did         integer NOT NULL,


    date_prod   date,


    kind        varchar(10),


    len         interval hour to minute
)
SERVER film_server;

COMPATIBILITY¶

The CREATE FOREIGN TABLE command largely conforms to the SQL standard; however, much as with CREATE TABLE, NULL constraints and zero-column foreign tables are permitted.

SEE ALSO¶

ALTER FOREIGN TABLE (ALTER_FOREIGN_TABLE(7)), DROP FOREIGN TABLE (DROP_FOREIGN_TABLE(7)), CREATE TABLE (CREATE_TABLE(7)), CREATE SERVER (CREATE_SERVER(7))