On 11 Jan 2018, at 5:01pm, Matthew Towler <tow...@ccdc.cam.ac.uk> wrote:
> With versions prior to 3.8.0 the query returns in under a second (which is > very impressive!). A query without all the sub-selects (so just selecting > some specific ID values from the main table) always works correctly (which is > why I had to include the long version in this message, for which apologies). In your two versions, please prepend "EXPLAIN QUERY PLAN " to your SELECT command. Do they both report the same query plan ? > What I have found, and the reason I feel this is closely related to the bug I > mentioned earlier, is that if I delete the index ABUNDANCE_UNIQUE_DATA_INDEX > on the main table (a unique index on all the columns) the query works > perfectly on all versions I have tested. Does the query plan remain the same when you delete the index ? Simon. _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
