Re: Slow query plan used

"Wetzel, Juergen (Juergen)" <wetzel(at)avaya(dot)com> writes:
> Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> writes:
>> You might get some traction by creating indexes on lower(searchfield1) etc.

> I will try that. Does that mean the column statistics will only be collected when there's an index on the table/column?

No; ANALYZE collects stats on plain columns automatically. The point
is that your query is not on the plain column searchfield1, it is on
lower(searchfield1). The planner cannot make a reasonable estimate
for "something LIKE constant-pattern" unless it can find statistics
that are specifically for the "something" value.

regards, tom lane