You could tweak with several settings to get it to do an index scan earlier, but these would probably break other queries. You don't need to tune for 100 rows, morelike 100k or 100M.
Thanks for respone. The index scan was a little bit faster for id=1 and faster for id=99.
Which settings shoud I change for this? cpu_index_tuple_cost , cpu_operator_cost, cpu_tuple_cost?
Jer.
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