Gaetano Mendola wrote:
The match 19 for '%pi%' is estimated, the real matches are: test=# select id from l_pvcp where value ilike '%pi%'; id - ---- 62 (1 row) test=# select id from l_pvcp where value ilike 'pi'; id - ---- 62 (1 row) so one row in both cases, that's why I expect for both same plan.
Ah, but it's got no way of knowing what matches you'll get for '%anything%'. There's no easy way to get statistics for matching substrings.
-- Richard Huxton Archonet Ltd
