Re: update statement

From: Jeffrey Beckstrom <JBECKSTROM_at_gcrta.org>
Date: Thu, 17 Feb 2011 15:16:05 -0500
Message-Id: <4D5D3BB50200000B004CF794_at_groupwise.gcrta.org>

In the "SET" you are not referencing the master table. You need an alias on the master and use it in the where clauses.  

Jeffrey Beckstrom
Database Administrator
Greater Cleveland Regional Transit Authority 1240 W. 6th Street
Cleveland, Ohio 44113

>>> "Zelli, Brian" <Brian.Zelli_at_RoswellPark.org> 2/17/11 3:06 PM >>>
SQL> UPDATE s_subject
  2 SET u_mrn = (SELECT u_mrn FROM annmarie.s_subject   3 WHERE annmarie.s_subject.s_subjectid = s_subject.s_subjectid)   4 where exists
  5 (SELECT u_mrn FROM annmarie.s_subject   6 WHERE annmarie.s_subject.s_subjectid = s_subject.s_subjectid); SET u_mrn = (SELECT u_mrn FROM annmarie.s_subject

             *
ERROR at line 2:
ORA-01427: single-row subquery returns more than one row  

Ok, I am trying to update the mrn data based on the subjectid's being equal. It errors saying:
This is a key and there shouldn't be any duplicates. An example I saw uses the same code.

What is wrong with the code?  

Brian  

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Received on Thu Feb 17 2011 - 14:16:05 CST