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20/04/2001 15:07:24
Ben Dekker
Dekker Soft & Hardware
Axel, Pays-Bas
Information générale
Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Titre:
Re: Scope
Divers
Thread ID:
00497534
Message ID:
00498109
Vues:
15
>Hi Mark
>>
>>ldBgnDate = {^2000-01-01} && or the value of some form controls
>>ldEndDate = {^2000-01-31}
>>
>You are very helpfull, but still some questions.
>Would you be so kind to explain the notation: {^2000-01-31}
>I used ctod("31/01/2000") I have seen your notation in Language
>Reference by DTOC function but it is not explaned.
>
>Must I use an Index for the command "set filter to"
>
>Greetings
>
> Ben

Your way of setting a date value is fine as well. What I showed came about for Y2K and the VFP StrictDate feature. From VFP Help StrictDateProperty topic:

A caret (^) can be included as the first character in a date to specify year-month-day date ordering, overriding the order specified by the DateFormat property or SET DATE.

Since your date formatting is dd/mm/yyyy, you can also define a date as {31/01/2000}. The braces {} are recognized by VFP as date delimiters. So an empty date would just be {}.

To optimize SET FILTER TO BETWEEN(datefield, date1, date2), you do need an index on the DateField. Otherwise, browsing the table with the filter set to a date range can be painfully slow.
Mark McCasland
Midlothian, TX USA
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