| Query goal: | Find B-tree indexes that fillfactor has been explicitly set to 90. In case of B-tree indexes the default is 90. |
| Query type: | Problem detection (Each row in the result could represent a flaw in the design) |
| Query reliability: | Low (Many false-positive results) |
| Query license: | MIT License |
| Fixing suggestion: | If you create a new B-tree index, then setting FILLFACTOR explicitly to 90 is not needed. Of course it could also be that fillfactor was something different and now it is reset. In this case everything is OK. |
| Data source: | system catalog only |
| SQL query: | Click on query to copy it
WITH indexes_reloptions AS (SELECT pg_class.relname AS index_name, pg_namespace.nspname AS index_schema, amname AS index_type, unnest(reloptions) AS reloptions, pg_get_indexdef(pg_class.oid) AS index_definition FROM pg_catalog.pg_class, pg_catalog.pg_namespace, pg_am WHERE pg_class.relnamespace = pg_namespace.oid AND pg_class.relam=pg_am.oid AND relkind='i') SELECT index_name, index_schema, index_type, reloptions, index_definition FROM indexes_reloptions WHERE index_type='btree' AND reloptions LIKE '%fillfactor=90%' ORDER BY index_name; |
| Collection name | Collection description |
|---|---|
| Find problems automatically | Queries, that results point to problems in the database. Each query in the collection produces an initial assessment. However, a human reviewer has the final say as to whether there is a problem or not . |
| Find problems by overview | Queries that results point to different aspects of database that might have problems. A human reviewer has to decide based on the results as to whether there are problems or not . |
| Category name | Category description |
|---|---|
| Data at the database physical level | Queries of this category provide information about the disk usage. |
| Performance | Queries of this category provide information about indexes in a database. |