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Editorial Team
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Asked: 2026-05-28T02:49:07+00:00

I would like to achieve something like this: SELECT col1,col2-(SELECT foo FROM table1) FROM

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I would like to achieve something like this:

SELECT col1,col2-(SELECT foo FROM table1) 
FROM table2 
WHERE col2>(SELECT foo FROM table1)

Without SELECTing foo twice.

Can I do that with Oracle SQL?
Would it be more efficient than SELECTing twice (or multiple times)?

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1 Answer

  1. Editorial Team

    How about

    WITH
  foo      AS  select foo from table1
SELECT
    col1, col2 - foo.foo
FROM
    table2, foo
WHERE
   col2 > foo.foo
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