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How to exclude duplicates from Select with UNION?
Message
De
29/03/2006 02:52:48
 
 
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Versions des environnements
Visual FoxPro:
VFP 9
OS:
Windows XP SP2
Database:
Visual FoxPro
Divers
Thread ID:
01108675
Message ID:
01108712
Vues:
14
You must have earned yourself a lot of stars by now! <vbg>

>On the second thought, why do I need UNION at all? I can try with left JOIN from Queue_Names and put filters into join condition...
>
>This worked fine:
>
>lcFilter1 = [Employee_Queue_Profiles.cUsGrLink_fk = '] + crsUsGrLink.cUsGrLink_pk + [']
>lcFilter2 = [Queue_Names.cDepartment_Code = '] + ;
>	strtran(left(cDepartments.cDepartment_Code,1),'C','O') + [']
>
>text TO lcSQLStr TEXTMERGE noshow
>   SELECT IIF(ISNULL(Employee_Queue_Profiles.cEmployee_Queue_Profiles_pk),0,1) as iSelected, ;
>   NVL(Employee_Queue_Profiles.iDefault_queue_flag,0) as iDefault_Queue_flag, ;
>   Queue_Names.cQueue_names_pk, Queue_Names.cQueue_name, ;
>   Queue_Names.cDepartment_code, Queue_Names.cQueue_type_code, ;
>   Queue_Names.cQueue_type_id ;
>   FROM Queue_Names LEFT JOIN Employee_Queue_profiles ;
>   ON Queue_Names.cQueue_Names_pk = Employee_Queue_Profiles.cQueue_Names_fk ;
>   AND Employee_Queue_Profiles.iActive_Flag = 1 AND <<m.lcFilter1>> ;
>   WHERE Queue_Names.cQueue_Name ;
>   NOT LIKE 'UNASSIGNED%' AND <<m.lcFilter2>> ;
>   ORDER BY 4
>ENDTEXT
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