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Possible in one SELECT command?
Message
 
To
31/10/2005 17:30:25
General information
Forum:
Visual FoxPro
Category:
Databases,Tables, Views, Indexing and SQL syntax
Environment versions
Visual FoxPro:
VFP 9
OS:
Windows XP SP2
Database:
Visual FoxPro
Miscellaneous
Thread ID:
01063783
Message ID:
01063849
Views:
15
>>Fabio
>>Why is it you need it? I have an OperationID field which is the primary key for the table, but i don't think it's relevant in this case.
>>Here, the user will enter the date for Sunday ( let's call it SunDate ) and i just extract all records where BETWEEN( CDate, SunDate, SunDate+3 ) ordered by CTime.
>>Jaime
>
>
>SELECT ;
>	CTime ;
>,	MAX(IIF(DateW=1,Patient,SPACE(30)))	AS Sunday     ;
>,	MAX(IIF(DateW=2,Patient,SPACE(30)))	AS Monday     ;
>,	MAX(IIF(DateW=3,Patient,SPACE(30)))	AS Tuesday    ;
>,	MAX(IIF(DateW=4,Patient,SPACE(30)))	AS Wednesday  ;
>,	MAX(IIF(DateW=5,Patient,SPACE(30)))	AS Thursday	;
>,	MAX(IIF(DateW=6,Patient,SPACE(30)))	AS Friday	;
>,	MAX(IIF(DateW=7,Patient,SPACE(30)))	AS Saturday	;
>	FROM (SELECT	MAX(T.CTime) 	   CTime   ;
>	,		MAX(DOW(T.CDate))  DateW   ;
>	,		MAX(T.Patient)	   Patient ;
>	,		COUNT(*)           rowInGroup;
>			FROM theTable T ;
>			LEFT JOIN theTable RN ;
>				ON RN.OperationID <= T.OperationID ;
>				AND RN.CTime=T.CTime ;
>				AND DOW(RN.CDate)=DOW(T.CDate);
>			GROUP BY T.OperationID) GG;
>	GROUP BY CTime,rowInGroup
>
>if it is slow, a variation exists

Hey Fabio
1) It's extremely slow ( my lamborgini computer is stucked on it already for 5 minutes and still didn't finish :-) ) even if i deleted the code for thursday friday and saturday
2) i don't understand this join
FROM theTable T ;
			LEFT JOIN theTable RN ;
				ON RN.OperationID <= T.OperationID ;
				AND RN.CTime=T.CTime ;
				AND DOW(RN.CDate)=DOW(T.CDate)
Thanks
Jaime
Why do programs stop working correctly as soon as you leave the Fox?
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