I have something like:
SELECT a, b
INTO v_a, v_b
FROM (
SELECT x, y
FROM whatever
UNION
SELECT z, w
FROM something
) AS subquery (a, b)
Which of course doesn't work in Oracle (that syntax – apart from the INTO and the optional AS) would be fine in SQL Server http://sqlfiddle.com/#!6/b7dcf/1
Is there an alternative to this (which requires me to put the aliasing inside) where the column aliasing is outside:
SELECT a, b
INTO v_a, v_b
FROM (
SELECT x AS a, y AS b
FROM whatever
UNION
SELECT z, w
FROM something
) subquery;
http://sqlfiddle.com/#!6/c12e1/1 – which works on both SQL Server and Oracle, of course
My objection to the interior aliasing is that it is not as good for maintenance, obviously, if new sections are added above that section, the aliasing gets whacked.
Best Answer
Consider using the
WITH
syntax that has the subquery above the outerSELECT
and has the better maintainability you were looking for:... runs on Oracle 11.2 according to: http://sqlfiddle.com/#!4/d0b42/2/0