Thanks Fabio

>>Hey all
>>
>>Some time ago I think Fabio Lunardon demonstrated using fsize to check for the presence of a field. What thread was that? I can't find it though I looked.
>>
>>Considering the need to manage SET COMPATIBLE for a UDF to use FSIZE I can't see it being the fastest way.
>>
>>I have used a UDF based on TYPE() and it is faster than a UDF using FSIZE that also handles setting and resetting SET COMPATIBLE. I think I found FIELD() is faster.
>>
>>There is another consideration. Using a UDF can be slow, so using an idea that is in my FoxPro Advisor article: http://advisor.com/doc/17440, the command that can detect a field with the fewest external dependencies could be directly injected into code. It seems the easiest and fastest is to use FIELD().
>>
>>Did FIELD() always accept the fieldname and alias?
>
>with an ALIAS the VARTYPE can to be faster
>

>CLEAR
>CREATE CURSOR AAA (kyWarrant G)
>LOCAL lnSec, llCheck
>FOR i = 1 TO 1000000
>NEXT
>lnSec = SECONDS()
>FOR i = 1 TO 100000
>NEXT
>looptime=(SECONDS()  - lnSec)
>
>lnSec = SECONDS()
>FOR i = 1 TO 100000
>  llCheck = FSIZE('kyWarrant','AAA')>0
>NEXT
>? 'FSIZE',(SECONDS()  - lnSec-looptime),llCheck
>lnSec = SECONDS()
>FOR i = 1 TO 100000
>  llCheck = FIELD('kyWarrant','AAA')#''
>NEXT
>? 'FIELD',(SECONDS()  - lnSec-looptime),llCheck
>
>lnSec = SECONDS()
>FOR i = 1 TO 100000
>  llCheck = vartype(AAA.kyWarrant)<>'U'
>NEXT
>? 'VARTYPE',(SECONDS()  - lnSec-looptime),llCheck
>
>lnSec = SECONDS()
>FOR i = 1 TO 100000
>  llCheck = type('AAA.kyWarrant')<>'U'
>NEXT
>? 'TYPE',(SECONDS()  - lnSec-looptime),llCheck
>
>USE
>