Rajarshi Guha <rguha@xxxxxxxxxxx> writes: > I have a table, A with 15 fields, out of which I am interested in 2 > fields, a and b. The table has 8,000,000 rows > I have another table, B, which has 3 fields a, c, and d. The field a > references field a in table A. Table B is empty at this point. > I tried to do an insert using the following command: > insert into B (a,c,d) select a, f1(b), f2(b) from A; I think you are getting burnt by the list of pending trigger actions to check the foreign-key references in B. Might be easiest to drop the foreign key constraint, fill table B, re-add the constraint. I forget how smart 7.4 is about adding FK constraints exactly, but it shouldn't run out of memory anyway. regards, tom lane
