diff options
Diffstat (limited to 'src/mango/src/mango_cursor_special.erl')
| -rw-r--r-- | src/mango/src/mango_cursor_special.erl | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/mango/src/mango_cursor_special.erl b/src/mango/src/mango_cursor_special.erl index 78cac7f5d..f4a760d1c 100644 --- a/src/mango/src/mango_cursor_special.erl +++ b/src/mango/src/mango_cursor_special.erl @@ -31,10 +31,13 @@ create(Db, Indexes, Selector, Opts) -> InitialRange = mango_idx_view:field_ranges(Selector), CatchAll = [{<<"_id">>, {'$gt', null, '$lt', mango_json_max}}], - FieldRanges = lists:append(CatchAll, InitialRange), + % order matters here - we only want to use the catchall index + % if no other range can fulfill the query (because we know) + % catchall is the most expensive range + FieldRanges = InitialRange ++ CatchAll, Composited = mango_cursor_view:composite_indexes(Indexes, FieldRanges), {Index, IndexRanges} = mango_cursor_view:choose_best_index(Db, Composited), - + Limit = couch_util:get_value(limit, Opts, mango_opts:default_limit()), Skip = couch_util:get_value(skip, Opts, 0), Fields = couch_util:get_value(fields, Opts, all_fields), |