Question

I have a insert query and I want to get last inserted id in OpenERP. Here is the code:

query = "INSERT INTO foo SELECT * FROM bar"
cr.execute(query) # cr => cursor

How to get last inserted id(s)? What happened when insertion is empty?

Answer 1

Look at the RETURNING clause.

INSERT INTO table [ ( column [, ...] ) ]
    { DEFAULT VALUES | VALUES ( { expression | DEFAULT } [, ...] ) [, ...] | query }
    [ RETURNING * | output_expression [ AS output_name ] [, ...] ]

Insert a single row into table distributors, returning the sequence number generated by the DEFAULT clause:

INSERT INTO distributors (did, dname) VALUES (DEFAULT, 'XYZ Widgets')
   RETURNING did;