mfvanek/pg-index-health#322

Query to check on indexes with boolean values.

sql/indexes_with_boolean.sql

@@ -0,0 +1,15 @@
+select pi.indrelid::regclass::text   as table_name,
+       pi.indexrelid::regclass::text as index_name,
+       col.attname                   as column_name,
+       col.attnotnull                as column_not_null
+from
+    pg_catalog.pg_index pi
+    join pg_catalog.pg_class pc on pc.oid = pi.indexrelid
+    join pg_catalog.pg_namespace pn on pn.oid = pc.relnamespace
+    join pg_catalog.pg_attribute col on col.attrelid = pi.indrelid and col.attnum = any (pi.indkey)
+where pn.nspname = 'public'::text
+  and not pi.indisunique
+  and pi.indisready
+  and pi.indisvalid
+  and col.atttypid = 'boolean'::regtype
+order by table_name, index_name;