4 The following sequence of commands will create the table test_table
5 with OID 420, having three columns oid, cola and colb of type oid, int4
6 and text, respectively, and insert two rows into the table:
7 create test_table 420 (oid = oid, cola = int4, colb = text)
9 insert ( 421 1 'value 1' )
10 insert ( 422 2 _null_ )