## CALL

CALL — invoke a procedure

## Synopsis

    CALL name ( [ argument ] [, ...] )

## Description

`CALL` executes a procedure.

If the procedure has any output parameters, then a result row will be returned, containing the values of those parameters.

## Parameters

`name`

  The name (optionally schema-qualified) of the procedure.

`argument`

  An input argument for the procedure call. See Section 4.3 for the full details on function and procedure call syntax, including use of named parameters.

## Notes

The user must have `EXECUTE` privilege on the procedure in order to be allowed to invoke it.

To call a function (not a procedure), use `SELECT` instead.

If `CALL` is executed in a transaction block, then the called procedure cannot execute transaction control statements. Transaction control statements are only allowed if `CALL` is executed in its own transaction.

PL/pgSQL handles output parameters in `CALL` commands differently; see Section 44.6.3.

## Examples

    CALL do_db_maintenance();

## Compatibility

`CALL` conforms to the SQL standard.

## See Also

CREATE PROCEDURE