Index Advisor limitations v15
Prior to running the Index Advisor feature, review the following limitations:
Index Advisor doesn't consider index-only scans. It does consider index scans when making recommendations.
Index Advisor ignores any computations found in the
WHEREclause. Effectively, the index field in the recommendations isn't any kind of expression. The field is a simple column name.
Index Advisor doesn't consider inheritance when recommending hypothetical indexes. If a query references a parent table, Index Advisor doesn't make any index recommendations on child tables.
Suppose you're restoring a pg_dump backup file that includes the
index_advisor_logtable or any tables for which indexing recommendations were made and stored in the
index_advisor_logtable. Changes in object identifiers (OIDs) can result in broken links between the
index_advisor_logtable and the restored tables referenced by rows in the
If you need to display the recommendations made prior to the backup, you can replace the old OIDs in the
reloidcolumn of the
index_advisor_logtable with the new OIDs of the referenced tables using the SQL