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Re: [INTERFACES] ecpg SQL-return codes?

From: "Thomas G(dot) Lockhart" <lockhart(at)alumni(dot)caltech(dot)edu>
To: Benedikt Eric Heinen <beh(at)icemark(dot)ch>
Cc: pgsql-interfaces(at)postgreSQL(dot)org
Subject: Re: [INTERFACES] ecpg SQL-return codes?
Date: 1998-07-16 13:41:00
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Lists: pgsql-interfaces
>   how do I determine the result from an SQL statement in an ecpg source?
> >From using adabas/oracle I am somewhat used to using sqlca.sqlcode, but
> when I did a simple test yesterday (trying to update a row in an empty
> table, which of course fails, since there is nothing to update in the
> table) reveiled sqlca.sqlcode to have a value of 0.

Well, it of course succeeded! :)

SQL is set-oriented, and updating no matching rows is a valid result.
Now, if you mis-type the update command so there is a syntax or naming
error, you will probably find an error return. Also, if you do a select
on a cursor, then loop through, you might find a return code of "100"
when there are no more rows to select. But updates on well-formed
queries are likely to succeed and return zero.

                  - Tom

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