mfvanek/pg-index-health#322

Fix formatting.
Add header and description.

sql/indexes_with_boolean.sql

@@ -1,13 +1,22 @@
-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
+/*
+ * Copyright (c) 2019-2024. Ivan Vakhrushev and others.
+ * https://github.com/mfvanek/pg-index-health-sql
+ *
+ * Licensed under the Apache License 2.0
+ */
+
+-- Finds indexes that contains boolean values.
+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
+where pn.nspname = :schema_name_param::text
   and not pi.indisunique
   and pi.indisready
   and pi.indisvalid