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All,

Every once and a while, I need to use the following technique and every
time it takes me a few minutes to find the right syntax.

The idea is to build a temporary table in memory, from text data rather
than actually inserting it into an actual (temporary) table.

There's two valid syntaxes

WITH X(foo, bar, baz) AS (
VALUES (0, 1, 2), (3, 4, 5), (6, 7, 8)
) SELECT * FROM X;

or

SELECT * FROM TABLE (
VALUES (0, 1, 2), (3, 4, 5), (6, 7, 8)
) X(foo, bar, baz);

This "table value constructor" was added to the SQL99 standards. Not sure
when it made it to DB2 for i; perhaps v5r4 but it certainly works in 7.1.
But DB2 for LUW has apparently had it since v7.2.8.


Hopefully, someone else will find this useful and that in the future I'll
be able to find this post again quickly :)

Charles

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