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Function empty() and null value
Message
From
26/06/2011 20:15:28
 
General information
Forum:
Visual FoxPro
Category:
Other
Environment versions
Visual FoxPro:
VFP 9 SP1
Miscellaneous
Thread ID:
01516146
Message ID:
01516148
Views:
56
>Hi,
>
>When using SQL Server and allowing NULL in empty dates I came across a small issue where EMPTY( date_field) returns .F. when the entry in date_field is NULL. And this of course breaks a lot of code where the program relied on the date field being empty. I am thinking of creating a simple function like this:
>
>Function MyEmpty
>lparameter tDate
>if empty( tDate) or isnull( tDate)
>   return .T.
>else
>  return .F.
>endif 
>
>
>And replace everywhere in the program where I use
>
>if EMPTY( date_field ) 
>
>with
>
>if MyEmpty( date_field )
>
>
>Can anybody see a potential problem with the above approach? TIA.

IF EMPTY(nvl(datefield,{})).....
.·*´¨)
.·`TCH
(..·*

010000110101001101101000011000010111001001110000010011110111001001000010011101010111001101110100
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