Re: Testing tells the tale (SYS 3054) -- "BETWEEN(a, b, c)" equivalent to "a BETWEEN b and c"

I agree with your statement. Any function you toss into your index has to be run row by row to evaluate the correct value. This is not optimizable because the data is being tweaked. Using INTs as keys saves you from this nightmare. On Tue, Mar 20, 2018 at 1:22 AM, Fernando D. Bozzo

Re: Testing tells the tale (SYS 3054) -- "BETWEEN(a, b, c)" equivalent to "a BETWEEN b and c"

Using ALLTRIM() on idexes is a bad idea, the full field is always better and faster, because VFP does not have to preprocess the value for searching, for adding a new value and for reindexing. El lun., 19 de marzo de 2018 23:29, Bill Anderson escribió: > Mike, > > I

Re: Testing tells the tale (SYS 3054) -- "BETWEEN(a, b, c)" equivalent to "a BETWEEN b and c"

On 2018-03-19 18:29, Bill Anderson wrote: Mike, I believe ALLTRIM()s in SQL doesn't "defeat" optimization, it's just that you can't have ragged (meaning, varying length) indexes in VFP. A tag on ALLTRIM(field) is padded out to the full length of the field. Bill Anderson Hi Bill! But it

Re: Testing tells the tale (SYS 3054) -- "BETWEEN(a, b, c)" equivalent to "a BETWEEN b and c"

Mike, I believe ALLTRIM()s in SQL doesn't "defeat" optimization, it's just that you can't have ragged (meaning, varying length) indexes in VFP. A tag on ALLTRIM(field) is padded out to the full length of the field. Bill Anderson On Mon, Mar 19, 2018 at 12:55 PM, <

Re: Testing tells the tale (SYS 3054) -- "BETWEEN(a, b, c)" equivalent to "a BETWEEN b and c"

-Original Message- From: ProFox [mailto:profox-boun...@leafe.com] On Behalf Of mbsoftwaresoluti...@mbsoftwaresolutions.com Sent: Sunday, March 18, 2018 2:34 PM To: ProFox Subject: Testing tells the tale (SYS 3054) -- "BETWEEN(a,b,c)" equivalent to "a BETWEEN b and c"

RE: Testing tells the tale (SYS 3054) -- "BETWEEN(a, b, c)" equivalent to "a BETWEEN b and c"

I was working at a place that did ran batch processes at night using VFP. One of the managers came up to me and told me of a process that used to take 30 minutes now was taking 5 hours. Combined with the other processes, this meant we couldn't complete the processing overnight any longer and