...@leafe.com [mailto:profox-boun...@leafe.com] On Behalf Of
MB Software Solutions General Account
Sent: 20 August 2012 19:16
To: ProFox Email List
Subject: Re: Query taking 4 minutes...ugh
On Mon, August 20, 2012 2:13 pm, Stephen Russell wrote:
On Mon, Aug 20, 2012 at 12:27 PM, MB Software Solutions General
On Tue, August 21, 2012 4:03 am, Dave Crozier wrote:
I just ran a test as I also didn't think the from was evaluated for each
line (why should it be?) and can categorically confirm that it makes no
difference whatsoever. As Stephen says, it is only evaluated once to open
up the table.
Many
On Tue, Aug 21, 2012 at 9:14 AM, MB Software Solutions General Account
mbsoftwaresoluti...@mbsoftwaresolutions.com wrote:
On Tue, August 21, 2012 4:03 am, Dave Crozier wrote:
I just ran a test as I also didn't think the from was evaluated for each
line (why should it be?) and can categorically
On Tue, August 21, 2012 10:38 am, Stephen Russell wrote:
snipped
Now you can see how the Index is used for #s 1-2-3. Don't think that
the engine can substitute one index for a join and another for the where.
It just picks the BEST one it can for the overall process.
VFP uses multiple
On Fri, August 17, 2012 12:29 am, Bill Anderson wrote:
Store the AddBS() function and the cClaimsTable reference to variables,
then use those variables in the SELECT statement.
You're evaluating each expression with every row.
I used TEXT/ENDTEXT and textmerged these all into my variable
On Mon, Aug 20, 2012 at 12:27 PM, MB Software Solutions General
Account mbsoftwaresoluti...@mbsoftwaresolutions.com wrote:
On Fri, August 17, 2012 12:29 am, Bill Anderson wrote:
Store the AddBS() function and the cClaimsTable reference to variables,
then use those variables in the SELECT
On Mon, August 20, 2012 2:13 pm, Stephen Russell wrote:
On Mon, Aug 20, 2012 at 12:27 PM, MB Software Solutions General
Account mbsoftwaresoluti...@mbsoftwaresolutions.com wrote:
On Fri, August 17, 2012 12:29 am, Bill Anderson wrote:
Store the AddBS() function and the cClaimsTable reference
Good spot, Bill!
--
rk
-Original Message-
From: profoxtech-boun...@leafe.com [mailto:profoxtech-boun...@leafe.com] On
Behalf Of Bill Anderson
Sent: Friday, August 17, 2012 12:29 AM
To: profoxt...@leafe.com
Subject: Re: Query taking 4 minutes...ugh
Store the AddBS() function
On Fri, August 17, 2012 12:29 am, Bill Anderson wrote:
Store the AddBS() function and the cClaimsTable reference to variables,
then use those variables in the SELECT statement.
You're evaluating each expression with every row.
Noreally? But that's not part of the SELECT fields; it's
If you do:
Use (ADDBS(this.cDataPath)+this.cClaimsTable) in 0 alias x1
Use (ADDBS(this.cDataPath)+this.cDischargeTable) in 0 alias x2
Select provnum from x1 Union select provnum from x2 Into Cursor curTemp
... is that any quicker?
How big are these tables?
--
Alan Bourke
alanpbourke
On Thu, Aug 16, 2012, at 03:28 PM, MB Software Solutions General Account
wrote:
VFP9SP2 - WinXP - dbfs on network
How fast is the network link?
--
Alan Bourke
alanpbourke (at) fastmail (dot) fm
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MB Software Solutions General Account wrote:
VFP9SP2 - WinXP - dbfs on network
I have to query 2 tables to populate a lookup list:
SELECT x1.provnum ;
FROM (ADDBS(this.cDataPath)+this.cClaimsTable) x1 ;
UNION ;
SELECT x2.provnum ;
FROM (ADDBS(this.cDataPath)+this.cDischargeTable) x2 ;
You didn't say how many rows are in these tables.
Go xBase. Try COPY TO and APPEND FROM.
--
rk
-Original Message-
From: profoxtech-boun...@leafe.com [mailto:profoxtech-boun...@leafe.com] On
Behalf Of MB Software Solutions General Account
Sent: Thursday, August 16, 2012 10:29 AM
To:
On Thu, August 16, 2012 10:39 am, Alan Bourke wrote:
How big are these tables?
Yeah sorry...just realized I forgot that detail! Claims is 2.5 million
rows, and Discharge is 65,000. Of course there's an index on provnum in
both tables. Those tables record count will grow over time.
On Thu, August 16, 2012 10:39 am, Alan Bourke wrote:
How fast is the network link?
100mb network
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On Thu, August 16, 2012 10:51 am, Peter Cushing wrote:
If all you are doing is checking if the provnum is valid you could just
seek into both tables (assuming it is indexed). Should be quick enough.
* assume open with above aliases and order set.
if seek(mytestvalue,'X1') or
On Thu, August 16, 2012 10:57 am, Richard Kaye wrote:
You didn't say how many rows are in these tables.
Sorry. Sent just a bit ago.
Go xBase. Try COPY TO and APPEND FROM.
I'm using APPEND FROM to get the text files into the DBFs. I'll just add
a function to make sure a local 'distinct
Mike,
If you have lots of duplicate provnum fields in cClaimstable then have you
tried select distinct in both the selects. This should be quicker (I think),
especially in the 2.5m row table.
Dave
---
This communication and the
Store the AddBS() function and the cClaimsTable reference to variables,
then use those variables in the SELECT statement.
You're evaluating each expression with every row.
Bill Anderson
On Thursday, August 16, 2012, MB Software Solutions General Account wrote:
VFP9SP2 - WinXP - dbfs on
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