Question

Hibernate criteria, using DB2 dialect, generates the following SQL with
composite keys in the IN clause, but DB2 answers that the query is incorrect:

select * from tableA where (x, y) IN ( ( 'x1', y1) )

but, DB2 throws this:

SQL0104N  An unexpected token "," was found following ", y) in (
('x1'". Expected tokens may include:  "+".  SQLSTATE=42601

Answer 1

Correct syntax would be

select * from tableA where (x, y) IN (VALUES ( ‘x1’, y1) )

Note you specify the VALUES clause only once, so a multiple rows results could be obtained with

select * from tableA where (x, y) IN (VALUES ( ‘x1’, y1), ( ‘x2’, y2) )

Don’t know how to make Hibernate do it, however.