The
query:
select count(*) from billing where timestamp >
now()-60
should obviously use the index
CREATE INDEX billing_timestamp_idx ON billing USING btree ("timestamp" timestamp_ops);
on a table with 1400000 rows.
But it uses a Seq Scan. If I set enable_seqscan=no, it indicates a queryplan could not be calculated.
Why does this simple query not use the timestamp index, and how can I get it to?
Thanks, Jack
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