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From
15/02/2010 18:14:51
 
General information
Forum:
Visual FoxPro
Category:
Coding, syntax & commands
Title:
Environment versions
Visual FoxPro:
VFP 9 SP2
Miscellaneous
Thread ID:
01449210
Message ID:
01449256
Views:
30
Can't post times today, popcorn is popping with the lid off ... now that I have a working solution, I must move on to other pressing issues.



>BTW, except for EXISTS vs. JOIN in your code, it's the same as I suggested. Can you post the timing for JOIN vs. EXISTS ?
>
>>Thanks all, for the suggestions ...
>>
>>Actually, since I did not an index on SeqnoFG, none of the suggestions had much of an effect. Once I added the index, however, this ran much better than any of the alternatives suggested.
>>
>>Select KTrackTagDetail.* From KTrackTagDetail			;
>>	Join C_Kits On KTrackTagDetail.Seqno = C_Kits.Seqno ;
>>	where Not KTrackTagDetail.RecordType Like 'AP%'		;
>>	;
>>	union 												;
>>	;
>>	Select KTrackTagDetail.* From KTrackTagDetail		;
>>	Join C_Kits On KTrackTagDetail.SeqnoFG = C_Kits.Seqno ;
>>	where Not KTrackTagDetail.RecordType Like 'AP%'		;
>>	;
>>	into Cursor C_Detail
>>
>>>The following is very slow, presumably because of my use of IN
Select * From KTrackTagDetail							;
>>>	where (Seqno In (Select Seqno From C_Kits)			;
>>>	or SeqnoFG In (Select Seqno From C_Kits))			;
>>>	and Left (RecordType,2) # 'AP'						;
>>>	into Cursor C_Detail
>>>So, how can I speed this up?
>>>
>>>Thanks
Jim Nelson
Newbury Park, CA
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