Do not attempt to use a covering index based purely on columns-used when doing an UPDATE or DELETE of a WITHOUT ROWID table. Raise an SQLITE_INTERNAL error if there is ever a situation where a table reference cannot be converted into an index reference when the query planner thinks that a covering index is appropriate. (tags: covering-index-patch)

Do not attempt to use a covering index based purely on columns-used when doing an UPDATE or DELETE of a WITHOUT ROWID table. Raise an SQLITE_INTERNAL error if there is ever a situation where a table reference cannot be converted into an index reference when the query planner thinks that a covering index is appropriate. (tags: covering-index-patch)