Peter Fein <[EMAIL PROTECTED]> writes:
> Sorry, I kinda wrote that wrong. ;) What I really want is:

> SELECT rows of known, app-generated (app_name, app_id)
> INTERSECT
> SELECT t1.symbol AS app_name, t2.outside_key AS app_id
> FROM t2 LEFT JOIN t1 ON t1.t2_id=t2.id

> There are around a max of 50 rows in the first select and
> perhaps up to 1 million in the second.

You could do it like

      (
        SELECT appname1, appid1
        UNION ALL
        SELECT appname2, appid2
        UNION ALL
        ...
        SELECT appnameN, appidN
      )
        INTERSECT
        SELECT ...

The UNION ALL bit is a tad grotty, but it will do until someone gets
around to implementing the full SQL VALUES construct.

                        regards, tom lane

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