This section provides guidelines on how to implement the body of a table function that the SELECT statement invokes using the columns from a derived table as input arguments.
For example, the following statement invokes table_function_2 using column_1 from the preceding derived table with the t1 correlation name:
SELECT * FROM ( SELECT column_1 FROM table_1 WHERE column_2 > 65 ) AS t1, TABLE (table_function_2(t1.column_1)) AS t2 (c1, c2, c3) WHERE t1.column_3 = t2.c3;
Although this section discusses how to implement a table function that only handles variable input arguments, you can design a table function that can handle constant and variable input arguments. For more information on how to implement a constant mode table function, see Constant Mode Table Function Body.