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Phantom records
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Information générale
Forum:
Visual FoxPro
Catégorie:
Autre
Titre:
Divers
Thread ID:
01309875
Message ID:
01309888
Vues:
16
Please read my previous reply carefuly.

>
>Thanks for the response.
>
>I may have not explained the index expression clearly..
>"Start" is a datetime field, time(start) returns a time string.
>so my index expression actually was:
>empno+dtos(date)+duty+time(start)
>
>where:
>empno is Char
>date is date
>duty is char
>start is datetime
>
>I also tried something more convoluted like:
>empno+dtos(date)+duty+EMPNO+DTOS(DATE)+DUTY+EXCCODE+STRTRAN(SUBSTR(TTOC(START),12,5),":")
>Which gave me the same result...
>Seems that I get the phantom record problem whenever the time portion is added to the index:
>
>DATE EMPNO DUTY START
>03/29/2008 34381 PCC1 03/29/2008 15:00:00
>03/29/2008 34381 PR3 03/29/2008 19:45:00
>03/29/2008 34381 PR3 03/29/2008 19:45:00
>
>The 3rd record is the phantom one. If I "set order to", the record disappears.
>It also disappears when the index tag expression is rebuilt to exclude the time string.
>
>aargh
>
>
>
>>Expression time(start t) wll return current time with 2 digits after decimal point regardless of the value of 'start'. I don't think it was your intention. My guess is, you were looking for something like
>>
>>...+ RIGHT(TTOC(start,1),6)
>>
>>
>>
>>>This is just curiosity; I've got a workaround....
>>>
>>>One of my tables has an index tag based on:
>>>EmployeeNumber C(5) + dtos(date d) + duty c(5) + time(start t)
>>>
>>>this configuration causes a phantom record to appear in a grid or a browse. The phantom record duplicates the preceding record, but cannot be selected, highlights even though the record mark is on the previous, selected record.
>>>
>>>Removing the time component from the index got rid of the problem, but I'd like to know why...
>>>
>>>TIA
--sb--
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