Re: Error messages not always reported through the ODBC driver -STATEMENT ERROR missing

Hi Kristis,

Kristis Makris wrote:
>
> Hello everyone,
>
> I'm experiencing a problem receiving error messages correctly from
> postgres. I'm running PostgreSQL 7.1.2 on i686-pc-linux-gnu, compiled by
> GCC egcs-2.91.66, using the 7.01.00.06 ODBC driver through VC++. In
> particular, I'm receiving a CONN ERROR but no STATEMENT ERROR, with the
> effect of not being able to capture an exception for it, since no
> exception is raised at all.
>
> The error message results from constraints placed on backend tables
> during table definition that forbid removing a tuple from one table if
> that tuple is referenced from a different tuple in another table
> (using the ON DELETE RESTRICT clause). Here's the definition of the
> table from which a tuple is attempted to be removed:
>
> create table Vendor (
> ID            int  primary key
>                    references ContactInfo (ID)
>                               on update cascade
>                               on delete restrict,
> VendorNumber  text
> );
>
> Here's is a copy of the log message:
>
> ************************************************************************************
> conn=33461048, SQLDriverConnect( in)='DSN=wats;UID=cathy;PWD=cathy;',
> fDriverCompletion=0
> DSN info:
> DSN='wats',server='mayhem',port='5712',dbase='wats',user='cathy',passwd='cathy'
>           onlyread='0',protocol='6.4',showoid='0',fakeoidindex='0',showsystable='0'
>           conn_settings=''
>           translation_dll='',translation_option=''
> Global Options: Version='07.01.0005', fetch=100, socket=4096,
> unknown_sizes=0, max_varchar_size=254, max_longvarchar_size=8190
>                 disable_optimizer=1, ksqo=1, unique_index=0,
> use_declarefetch=0
>                 text_as_longvarchar=1, unknowns_as_longvarchar=1,
> bools_as_char=0
>                 extra_systable_prefixes='dd_;', conn_settings=''
> conn=33461048, query=' '
> conn=33461048, query='set DateStyle to 'ISO''
> conn=33461048, query='set geqo to 'OFF''
> conn=33461048, query='set ksqo to 'ON''
> conn=33461048, query='select oid from pg_type where typname='lo''
>     [ fetched 0 rows ]
> conn=33461048, query='select version()'
>     [ fetched 1 rows ]
>     [ PostgreSQL version string = 'PostgreSQL 7.1.2 on
> i686-pc-linux-gnu, compiled by GCC egcs-2.91.66' ]
>     [ PostgreSQL version number = '7.1' ]
> conn=33461048,
>
SQLDriverConnect(out)='DSN=wats;DATABASE=wats;SERVER=mayhem;PORT=5712;UID=cathy;PWD=cathy;READONLY=0;PROTOCOL=6.4;FAKEOIDINDEX=0;SHOWOIDCOLUMN=0;ROWVERSIONING=0;SHOWSYSTEMTABLES=0;CONNSETTINGS='
> conn=33461048, query='BEGIN'
> conn=33461048, query='SELECT Vendor_Remove(1)'
>     [ fetched 1 rows ]
> conn=33461048, query='COMMIT'
> ERROR from backend during send_query: 'ERROR:  <unnamed> referential
> integrity violation - key in vendor still referenced from
> vendorforwellagreement'
> CONN ERROR: func=SQLTransact, desc='', errnum=110, errmsg='ERROR:

The error seems to have occured at SQLTransact().
Probbably you should catch the error at CommitTrans() not at
ExecuteSQL().

>
> Incidentally, I have a couple more questions about the driver in
> general:
>
> 1) I've noticed that the 7.01.00.06 driver reports in the logs that it
> is a 7.01.0005 driver. Is this nomral? Is this a known bug?
>
>    "Global Options: Version='07.01.0005'"

Hmm strange, what does Control Panel show ?

regards,
Hiroshi Inoue