I do this kind of thing on a daily basis and I write code so I can
understand what I did. I would:
select stocktable
scan
replace qty with getsumqty(stocktable.stockcode)
endscan
procedure getsumqty
lparameters lccode
lnarea = select(0)
do your thing to create the sum you want
select (lnarea)
return (lnreturn)
You can do the same thing with delete
scan
if needsdeleting(stocktable.stockcode)
delete
endif
endscan
a little bit more code, but in a huge monolithic application it is easy
to see what I was doing.
YMMV as Fred would say.
On 7/29/2014 4:15 PM, Sytze de Boer wrote:
I want to the fastest possible qty update to the stocktable with
information from another table
The tables are stand-alone tables
On Wed, Jul 30, 2014 at 11:10 AM, Fernando D. Bozzo <fdbo...@gmail.com>
wrote:
You can use a Select-SQL as a subquery for another Select-SQL, but a
REPLACE or DELETE commands, not being SQL, can't use subqueries, except you
use it inside a function called as part of the REPLACE/DELETE expression
condition (but it can complicate things too much).
Sometimes it's better to have more readability, even if this implies the
use of more than 1 line of code.
What are you exactly want to do?
2014-07-30 1:00 GMT+02:00 Sytze de Boer <sytze.k...@gmail.com>:
I seem to recall a similar line of code where I could something like
sele stocktable
delete for (select sum(qty) as ttl, stockcode from othertable)
I was hoping to do this in 1 line, but as Tracy said, maybe a scan will
have to suffice
scan
select SUM(qty) as ttl,stockcode FROM invtable where
stockcode=stocktable.code
if ttl=0
sele stocktable
delete
endif
endscan
On Wed, Jul 30, 2014 at 10:52 AM, Fernando D. Bozzo <fdbo...@gmail.com>
wrote:
Hi Sytze:
You can't use _tally this way. You are assuming too much using like
this,
and this system variable is updated with every VFP command that
operates
on
records, as Select-SQL, REPLACE, UPDATE, and the like.
In your example, _tally is updated *after* REPLACE is executed with the
number of records affected, but can be affected also with the
Select-SQL
at
the same time.
You didn't mention what the error is, but you can't use a Select-SQL
as a
function or expression, because it is a command. You should decompose
this,
may be using this Select-SQL inside a function, but the _tally
behaviour
can be erratic in this use case.
Best regards.-
2014-07-30 0:22 GMT+02:00 Sytze de Boer <sytze.k...@gmail.com>:
Friends
Can someone point out me error here please
select stocktable
REPLACE ALL qty WITH IIF(_tally>0,select SUM(qty) as ttl,stockcode
FROM
invtable where stockcode=stocktable.code,ttl,0))
--
Kind regards,
Sytze de Boer
Kiss Software
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