A. Kretschmer wrote:
in a SELECT with a condition 'WHERE foo IN (1,2,3,4,...)' with a large
...
But if the list increase the planner choose an seq-scan. The amount of
values in the list is about 200 and the table has about 250.000 rows.

How can we avoid the seq-scan?

Are you sure you'd want to? What plan have you found to be faster with 200 tests?

--
  Richard Huxton
  Archonet Ltd

---------------------------(end of broadcast)---------------------------
TIP 3: Have you checked our extensive FAQ?

              http://www.postgresql.org/docs/faq

Reply via email to