Example: CTE Result Set as Input to a Table Function - Advanced SQL Engine - Teradata Database

Suppose you have created these tables and table function.

     CREATE TABLE t1 (        a1 INTEGER,        b1 INTEGER);      CREATE TABLE t2 (        a2 INTEGER,        b2 INTEGER);      CREATE FUNCTION add2int (        a INTEGER,        b INTEGER)      RETURNS TABLE (addend1 INTEGER,                     addend2 INTEGER,                     mysum   INTEGER)      SPECIFIC add2int      LANGUAGE C      NO SQL      PARAMETER STYLE SQL      NOT DETERMINISTIC      CALLED ON NULL INPUT      EXTERNAL NAME 'CS!add3int!add2int.c';

Use the temporary result set derived from the subquery in the WITH statement modifier as input to table function add2int in the FROM clause.

     WITH dt(a,b) AS (        SELECT a1, b1        FROM t1)      SELECT addend1, addend2, mysum      FROM dt, TABLE (add2int(dt.a, dt.b)) AS tf      ORDER BY 1,2,3;