Back with more indexing questions :) 12991 $ sqlite3 SQLite version 3.19.3 2017-06-08 14:26:16 Enter ".help" for usage hints. Connected to a transient in-memory database. Use ".open FILENAME" to reopen on a persistent database. sqlite> create table t(j json, s string); sqlite> create index s on t(s); sqlite> create index j on t(json_extract(j, '$.foo')); sqlite> create index l on t(length(s)); sqlite> explain query plan select distinct s from t; 0|0|0|SCAN TABLE t USING COVERING INDEX s sqlite> explain query plan select distinct json_extract(j, '$.foo') from t; 0|0|0|SCAN TABLE t USING INDEX j sqlite> explain query plan select distinct length(s) from t; 0|0|0|SCAN TABLE t USING INDEX l
How come the indexes on calculated values are not considered COVERING? _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
