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select a.fld1, a.fld2, coalesce(b.fld1,'X')
from tbla A left outer join tblb b on (a.fld1 = b.fld1)

Charles


On Thu, Jun 20, 2013 at 11:48 AM, Michael Ryan <michaelrtr@xxxxxxxxx> wrote:

Here's what I want to do...TableA has 4 columns. TableB shares a key value
with TableA. I want to produce this output in a select statement (to be
used from PHP fwiw):

TableA.Fld1 TableA.Fld2 'X' (if TableA.Fld1 is in TableB).

I've been trying combinations of a CTE, CASE, and exists, but I can't get
this to work. I'd like:

A1 A2
A3 A4 X
A5 A6 X
A7 A8

IOW, I want the values for TableA to show up, and an X if the corresponding
key value is in TableB. This has to be easier than I'm making it out to be.

Thanks!
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