On 20/12/12 14:57, Josh Kupershmidt wrote:
CREATE TABLE test (id int);
CREATE INDEX test_idx1 ON test (id);
CREATE INDEX test_idx2 ON test (id);
I initially misread your example code, but after I realised my mistake,
I thought of an alternative scenario that might be worth considering.
CREATE TABLE test (id int, int sub, text payload);
CREATE INDEX test_idx1 ON test (id, sub);
CREATE INDEX test_idx2 ON test (id);
Nowtest_idx2 is logically included intest_idx1, but if the majority of
transactions only query onid, thentest_idx2 would be more better as it ties up
less RAM
Cheers,
Gavin
