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LEFT JOIN and complex criteria
Message
 
 
À
25/09/2006 13:32:26
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Versions des environnements
Visual FoxPro:
VFP 9 SP1
OS:
Windows XP
Database:
Visual FoxPro
Divers
Thread ID:
01156530
Message ID:
01157042
Vues:
17
>I have trust in this
>
>SELECT TI.cTrans_fk, TI.cInsurances_fk;
>    FROM (select curTemp.cTrans_pk , max(T.iSequence_Number) iSequence_Number;
>	    	from curTemp JOIN Trans_Insurances T ON curTemp.cTrans_pk = T.cTrans_fk ;
>		    GROUP BY 1) X ;
>		    JOIN Trans_Insurances TI ;
>                 ON TI.cTrans_fk = X.cTrans_pk AND TI.iSequence_Number = X.iSequence_Number;
> into cursor curTemp1
>
Seems to be a little bit faster, but still quite slow...
If it's not broken, fix it until it is.


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