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Query showing bad result
Message
From
29/08/2010 07:11:42
Hilmar Zonneveld
Independent Consultant
Cochabamba, Bolivia
 
 
General information
Forum:
Visual FoxPro
Category:
Databases,Tables, Views, Indexing and SQL syntax
Environment versions
Visual FoxPro:
VFP 9 SP2
OS:
Windows 7
Network:
Windows XP
Database:
Visual FoxPro
Application:
Desktop
Miscellaneous
Thread ID:
01479089
Message ID:
01479091
Views:
39
Perhaps you should explain what is the difference between the expected result, and the result you actually get?

>I have three queries, then i joint. but not correct result.
>
>
>
>SELECT  Hwsv.year,Hwsv.scode,Hwsv.lcode,Hwsv.sec, Hwsv.perc,COUNT(*)as nowork,;
>  Student.sex;
> FROM ;
>     student ;
> left JOIN hwsv ;
>   ON  Student.code = Hwsv.code;
>    WHERE  Hwsv.year=thisform.year.value AND hwsv.scode=thisform.scoDE.Value and Hwsv.perc<50 AND student.admtd=1 AND student.joind<CTOD("20/06/2010") ;
>              ORDER BY hwsv.lcode;
>              GROUP BY hwsv.lcode,hwsv.sec;
>              INTO cursor nowork
>  
> brows
>    SELECT Hwsv.year,Hwsv.scode,Hwsv.lcode,Hwsv.sec, Hwsv.perc,COUNT(*) as completee,;
>  Student.sex;
> FROM ;
>     student ;
> left    JOIN hwsv ;
>   ON  Student.code = Hwsv.code;
>    WHERE  Hwsv.year=thisform.year.value AND hwsv.scode=thisform.scoDE.Value AND Hwsv.perc =100 and student.admtd=1 AND student.joind<CTOD("20/06/2010");
>              GROUP BY hwsv.lcode,hwsv.sec;
>       ORDER BY hwsv.lcode;
>             INTO cursor com
>                 brows
>      
>      
>      
>       SELECT Hwsv.year,Hwsv.scode,Hwsv.lcode,Hwsv.sec, Hwsv.perc,COUNT(*) as incompl ,;
>  Student.sex;
> FROM ;
>     student ;
>    left JOIN hwsv ;
>   ON  Student.code = Hwsv.code;
>    WHERE  Hwsv.year=thisform.year.value AND hwsv.scode=thisform.scoDE.Value AND Hwsv.perc <100 and Hwsv.perc>49 AND student.admtd=1 AND student.joind<CTOD("20/06/2010");
>              GROUP BY hwsv.lcode,hwsv.sec;
>       ORDER BY hwsv.lcode;
>       INTO CURSOR incom
>
>
>SELECT Com.*, Incom.*, Nowork.*;
> FROM ;
>     com ;
>   LEFT JOIN incom ;
>   ON  Com.scode = Incom.scode;
>   AND  Com.lcode = Incom.lcode;
>   AND  Com.sec = Incom.sec ;
>    left JOIN nowork ;
>   ON  Com.scode = Nowork.scode;
>   AND  Incom.lcode = Nowork.lcode;
>   AND  Incom.sec = Nowork.sec;
>       INTO CURSOR  ghu10cc
>
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)
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