ROW

The following function creates a record value using ROW():

DELIMITER //
CREATE FUNCTION f() RETURNS INT AS
DECLARE
  r RECORD(a int, b int);
BEGIN
  r = ROW(1, 2);
  RETURN r.a + r.b;
END //
DELIMITER ;

Here’s an example use of this function:

SELECT f();
****
+------+
| f()  |
+------+
|    3 |
+------+

Type Inference The data types of the fields of the new RECORD object created are inferred from the context of the function or stored procedure. For example, if you assign the value of a new record created with ROW() into a record variable, the types of the fields of the new record will be the same as the types of the fields of the record variable to which the new record value is assigned. In the example above, the types of the two fields of the record created by ROW are inferred to be int based on the assignment to the variable r.

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