table_bloat/index_bloat improvements: add prompt in psql for mask, combine schema and table name in one column, add limit for index_bloat query.

sql/index_bloat.sql

@@ -1,10 +1,9 @@
---pgstattuple extension required
---WARNING: without index name/mask query will read all available indexes which could cause I/O spikes
+\prompt 'This utility will read indexes with given mask using pgstattuple extension and return top 100 bloated indexes.\nWARNING: without index mask query will read all available indexes which could cause I/O spikes.\nPlease enter mask for index name (check all indexes if nothing is specified): ' indexname
+
 with indexes as (
     select * from pg_stat_user_indexes
 )
-select schemaname,
-table_name,
+select table_name,
 pg_size_pretty(table_size) as table_size,
 index_name,
 pg_size_pretty(index_size) as index_size,
@@ -12,8 +11,9 @@ idx_scan as index_scans,
 round((free_space*100/index_size)::numeric, 1) as waste_percent,
 pg_size_pretty(free_space) as waste
 from (
-    select schemaname, p.relname as table_name, indexrelname as index_name,
-    (select (case when avg_leaf_density = 'NaN' then 0 
+    select (case when schemaname = 'public' then format('%I', p.relname) else format('%I.%I', schemaname, p.relname) end) as table_name,
+    indexrelname as index_name,
+    (select (case when avg_leaf_density = 'NaN' then 0
         else greatest(ceil(index_size * (1 - avg_leaf_density / (coalesce((SELECT (regexp_matches(reloptions::text, E'.*fillfactor=(\\d+).*'))[1]),'90')::real)))::bigint, 0) end)
         from pgstatindex(p.indexrelid::regclass::text)
     ) as free_space,
@@ -26,6 +26,7 @@ from (
     where pg_get_indexdef(p.indexrelid) like '%USING btree%' and
     i.indisvalid and (c.relpersistence = 'p' or not pg_is_in_recovery()) and
     --put your index name/mask here
-    indexrelname ~ ''
+    indexrelname ~ :'indexname'
 ) t
-order by free_space desc;
+order by free_space desc
+limit 100;

sql/table_bloat.sql

@@ -1,7 +1,7 @@
+\prompt 'This utility will read tables with given mask using pgstattuple extension and return top 20 bloated tables.\nWARNING: without table mask query will read all available tables which could cause I/O spikes.\nPlease enter mask for table name (check all tables if nothing is specified): ' tablename
 --pgstattuple extension required
 --WARNING: without table name/mask query will read all available tables which could cause I/O spikes
-select nspname,
-relname,
+select table_name,
 pg_size_pretty(relation_size + toast_relation_size) as total_size,
 pg_size_pretty(toast_relation_size) as toast_size,
 round(((relation_size - (relation_size - free_space)*100/fillfactor)*100/greatest(relation_size, 1))::numeric, 1) table_waste_percent,
@@ -9,7 +9,8 @@ pg_size_pretty((relation_size - (relation_size - free_space)*100/fillfactor)::bi
 round(((toast_free_space + relation_size - (relation_size - free_space)*100/fillfactor)*100/greatest(relation_size + toast_relation_size, 1))::numeric, 1) total_waste_percent,
 pg_size_pretty((toast_free_space + relation_size - (relation_size - free_space)*100/fillfactor)::bigint) total_waste
 from (
-    select nspname, relname,
+    select
+    (case when n.nspname = 'public' then format('%I', c.relname) else format('%I.%I', n.nspname, c.relname) end) as table_name,
     (select free_space from pgstattuple(c.oid)) as free_space,
     pg_relation_size(c.oid) as relation_size,
     (case when reltoastrelid = 0 then 0 else (select free_space from pgstattuple(c.reltoastrelid)) end) as toast_free_space,
@@ -20,7 +21,7 @@ from (
     where nspname not in ('pg_catalog', 'information_schema')
     and nspname !~ '^pg_toast' and nspname !~ '^pg_temp' and relkind in ('r', 'm') and (relpersistence = 'p' or not pg_is_in_recovery())
     --put your table name/mask here
-    and relname ~ ''
+    and relname ~ :'tablename'
 ) t
 order by (toast_free_space + relation_size - (relation_size - free_space)*100/fillfactor) desc
 limit 20;