Your query needs an aggregate field. Count. Alan On Oct 24, 2012 1:49 PM, "sir_wally_lewis" <rgilland1...@gmail.com> wrote:
> Hi, > > We use Firebird 2.5.1 on Linux 64 bit > > Firebird fails to restore because of a unique constraint( see below ). > However when interrogating the data, no duplicate is found. ( see below > SQL, unique key is on the grouped by fields ) > > How can this be? > > Kind Regards, > > Robert. > > > > SELECT ID_VN, CD_ITM_SPR > FROM AS_ITM_SPR > GROUP BY ID_VN, CD_ITM_SPR > HAVING COUNT(*) > 1 > > > > > gbak: activating and creating deferred index AK_AS_ITM_SPR > gbak:cannot commit index AK_AS_ITM_SPR > gbak: ERROR:attempt to store duplicate value (visible to active > transactions) in unique index "AK_AS_ITM_SPR" > gbak: ERROR:action cancelled by trigger (3) to preserve data integrity > gbak: ERROR: Cannot deactivate index used by a PRIMARY/UNIQUE constraint > gbak:Exiting before completion due to errors > > > > > ------------------------------------ > > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > > Visit http://www.firebirdsql.org and click the Resources item > on the main (top) menu. Try Knowledgebase and FAQ links ! > > Also search the knowledgebases at http://www.ibphoenix.com > > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > Yahoo! Groups Links > > > > [Non-text portions of this message have been removed]
