i4 invalid indexes added

Author: dmius

sql/i4_invalid_indexes.sql

@@ -0,0 +1,25 @@
+-- Lisf of invalid Indexes 
+
+-- Use it to see invalid indexes list
+
+-- This query doesn't need any additional extensions to be installed
+-- (except plpgsql), and doesn't create anything (like views or smth)
+-- -- so feel free to use it in your clouds (Heroku, AWS RDS, etc)
+
+-- It also does't do anything except reading system catalogs and
+-- printing NOTICEs, so you can easily run it on your
+--  production *master* database.
+-- (Keep in mind, that on replicas, the whole picture of index usage
+-- is usually very different from master).
+
+select 
+  schemaname,
+  relname,
+  indexrelname,
+  idx_scan,
+  idx_tup_read,
+  idx_tup_fetch
+from pg_index pidx
+join pg_stat_user_indexes as idx_stat on idx_stat.indexrelid = pidx.indexrelid
+where pidx.indisvalid = false;
+

sql/i4_indexes_migration.sql renamed to sql/i5_indexes_migration.sql

@@ -14,7 +14,8 @@
 \echo '  i1 – Unused/Rarely Used Indexes'
 \echo '  i2 – Redundant Indexes'
 \echo '  i3 – FKs with Missing/Bad Indexes'
-\echo '  i4 – Unused/Redundant Indexes Do & Undo Migration DDL'
+\echo '  i4 – Invalid Indexes'
+\echo '  i5 – Unused/Redundant Indexes Do & Undo Migration DDL'
 \echo '  p1 – [EXPERIMENTAL] Alignment Padding. How many bytes can be saved if columns are ordered better?'
 \echo '  s1 – Slowest Queries, by Total Time (requires pg_stat_statements extension)'
 \echo '  s2 – Slowest Queries Report (requires pg_stat_statements)'
@@ -41,6 +42,7 @@ select
 :d_stp::text = 'i2' as d_step_is_i2,
 :d_stp::text = 'i3' as d_step_is_i3,
 :d_stp::text = 'i4' as d_step_is_i4,
+:d_stp::text = 'i5' as d_step_is_i5,
 :d_stp::text = 'p1' as d_step_is_p1,
 :d_stp::text = 's1' as d_step_is_s1,
 :d_stp::text = 's2' as d_step_is_s2,
@@ -107,7 +109,11 @@ select
   \prompt 'Press <Enter> to continue…' d_dummy
   \ir ./start.psql
 \elif :d_step_is_i4
-  \ir ./sql/i4_indexes_migration.sql
+  \ir ./sql/i4_invalid_indexes.sql
+  \prompt 'Press <Enter> to continue…' d_dummy
+  \ir ./start.psql
+\elif :d_step_is_i5
+  \ir ./sql/i5_indexes_migration.sql
   \prompt 'Press <Enter> to continue…' d_dummy
   \ir ./start.psql
 \elif :d_step_is_p1