[INTERFACES] FW: Libpq and the SQL RETURNING clause

 

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From: Brefort, Georges R&D/FR
Sent: Tuesday, August 26, 2008 2:41 PM
To: pgsql-interfaces@postgresql.org
Subject: Libpq and the SQL RETURNING clause

Dear Postgres specialist,

 

1 Assume you have a table such as the following:

 

CREATE TABLE example( id SERIAL, someData VARCHAR(32) );

 

2 Now, you use a SQL statement to insert the data and get the the id value back:

 

INSERT INTO example( someData ) VALUES( 'BlaBlaBla' ) RETURNING id; 

 

I wonder if it is possible to retrieve the value of the id field in an application using the C libpq library.

 

I pretty much understand how to bind data with the libpq, or how to retrieve result sets from a SELECT SQL statement, but not how to retrieve data from that RETURNING clause. (I have many years of practice of the RETURNING clause in the ORACLE C library, but that is not the point here).

 

Thank you very much for your help and your patience.

With my best regards.

 

Georges BREFORT