Peter Eisentraut <[EMAIL PROTECTED]> writes: > I have been observing a case where the row count estimation for LIKE 'foo' is > (much) higher than for LIKE 'foo%', the rest of the query being the same. > This is a special case of the estimation for equality being higher than for a > range query that includes the value used in the equality.
Not really --- LIKE estimation is only weakly related to range estimation. Relevant questions here include exactly which PG version is in use and what's the database encoding/locale. If it's not C locale, the fixes I made in selfuncs.c during November might be relevant. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 1: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly