Roman Neuhauser wrote:
Why does the planner want to crawl the table that has 5M rows instead of the one
with 176k rows? Both tables are freshly vacuum-full-analyzed.
Because you don't have an index on "base" for the files table.
callrec32=# \d fix.files
Table "fix.files"
Column | Type | Modifiers
--------+------------------------+-----------
dir | character varying(255) |
base | character varying(255) |
Indexes:
"base_storename_idx" btree (base, ((((dir)::text || '/'::text) || (base)::text)))
"ff_storename_idx" btree (((((dir)::text || '/'::text) || (base)::text)))
A couple of indexes, but none simple on "base", so it can't be used for
the join.
--
Richard Huxton
Archonet Ltd
---------------------------(end of broadcast)---------------------------
TIP 6: explain analyze is your friend
