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What does SQLEXEC() return after an UPDATE... command?
Message
De
16/10/2004 13:37:45
 
 
À
16/10/2004 13:13:01
Cetin Basoz
Engineerica Inc.
Izmir, Turquie
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Divers
Thread ID:
00951936
Message ID:
00951959
Vues:
10
>>I do an UPDATE command using SQLEXEC.
>>I *know* that the conditions specified (WHERE clause) cannot be matching, yet I seem to be getting a "1" back (updating only 1 record each call). The record is *NOT* being updated, which is what I want, but the return code is telling me to update a list that is shown to the user to indicate records updated.
>>
>>The Help says:
>>"Numeric data type.
>>SQLEXEC( ) returns the number of result sets if there is more than one. SQLEXEC( ) returns 0 if it is still executing and returns 1 when it has finished executing. SQLEXEC( ) returns –1 if a connection level error occurs.

>>
>>SO what does it return after an UPDATE command? I had guessed that it would return the number of records updated but that is obviously wrong.
>>
>>Thanks
>>Jim
>
>Jim,
>Take that "1" as command successfully finished executing w/o any errors.
>Update might finish successfully yet no records are updated (ie: no match to where clause). Just before update try a select with the same where to see if that's the reason.

Cetin (and Fabio),

That apparently is what I have to do... but I want(ed) to avoid an extra SELECT because this is run inside a MSCOMMCTL where timing is critical.
I had already specified that the SQLs (using VFP ODBC by the way) should be synchronous (and batchmode for insurance) and I had also limited my updates to single records to both make it fastest possible and provide possibility of clear return code.

With this limitation I wonder why so many people say SPT is the best way to do this stuff?

Anyway, thanks both of you
Jim

>Cetin
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