Why are the Messages displayed by my pgAdmin sql window like this . . .
INFO: 7902
INFO: 7903
INFO: 7904
instead of what I expected . . .
INFO: 7902
INFO: 7904
INFO: 7906
???
Are you sure those ALTER TABLE commands are executing without an error ? The only way I can see you get those messages is when ALTER TABLE for tables MyCoolTable_2 and MyCoolTable_4 (and possibly others too) are failing for some reason.