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Oracle Update

Posted on 2016-09-23
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Last Modified: 2016-09-26
Can someone tell me what this is doing?
Getting an error in SSIS that reads —Single row query returns more than one row.

UPDATE tblA
SET (fldA, fldB, fldC) = (
SELECT fldA, fldB, fldC FROM tblB
WHERE tblB.fldD = tblA.fldD)

Pulling apart the query, I can't find any duplicates.


Thank you —
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Question by:David Lyons
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slightwv (䄆 Netminder) earned 500 total points
ID: 41813229
Well, the select is returning more than one row for one of the fields.

See that this returns:
SELECT fldA, fldB, fldC FROM tblB group by fldD having count(*) > 1;
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Author Closing Comment

by:David Lyons
ID: 41815993
Added fldD to the SELECT, and fldA, fldB and fldCto the GROUP BY —found the duplicates.
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