Adds TOAST size script

README.md

@@ -29,60 +29,65 @@ with the Postgres client of your choice.
 ## Scripts
 
 #### [`active_autovacuums.sql`](sql/active_autovacuums.sql) (admin permission)
-* **Returns all running autovacuums operations**
+* **Returns all running autovacuums operations.**
 
 #### [`analyze_stats.sql`](sql/analyze_stats.sql) (read permission)
-* **Returns autovacuum analyze stats for each table**
+* **Returns autovacuum analyze stats for each table.**
 
 #### [`bloat.sql`](sql/bloat.sql) (read permission)
-* **Returns the approximate bloat from dead tuples for each table**
-* This bloat can also be index bloat
+* **Returns the approximate bloat from dead tuples for each table.**
+* This bloat can also be index bloat.
 
 #### [`buffer_cache_usage.sql`](sql/buffer_cache_usage.sql) (admin permission)
-* **Returns the distribution of shared buffers used for each table**
-* *Requires the [pg_buffercache](https://www.postgresql.org/docs/current/pgbuffercache.html) extension*
+* **Returns the distribution of shared buffers used for each table.**
+* *Requires the [pg_buffercache](https://www.postgresql.org/docs/current/pgbuffercache.html) extension.*
 * Includes the total bytes of a table in shared buffers, the percentage of
  shared buffers a table is using, and the percentage of a table the exists
- in shared buffers
+ in shared buffers.
 
 #### [`cache_hit_rate.sql`](sql/cache_hit_rate.sql) (read permission)
-* **Returns the cache hit rate for indices and tables**
+* **Returns the cache hit rate for indices and tables.**
 * This is the rate of queries that only hit in-memory shared buffers rather
- than having to fetch from disk
+ than having to fetch from disk.
 * Note that a queries that are cache misses in Postgres's shared buffers may
  still hit the in-memory OS page cache, so a miss not technically go all the
- way to the disk
-* Both of these rates should be 99+% ideally
+ way to the disk.
+* Both of these rates should be 99+% ideally.
 
 #### [`index_hit_rate.sql`](sql/index_hit_rate.sql) (read permission)
-* **Returns the index hit rate for each table**
+* **Returns the index hit rate for each table.**
 * This rate represents the percentage of queries that utilize 1 or more indices
- when querying a table
-* These rates should be 99+% ideally
+ when querying a table.
+* These rates should be 99+% ideally.
 
 #### [`index_size.sql`](sql/index_size.sql) (read permission)
-* **Returns the size of each index in bytes**
+* **Returns the size of each index in bytes.**
 
 #### [`reset_stats.sql`](sql/reset_stats.sql) (admin permission)
-* **Resets pg_stats statistics tables**
+* **Resets pg_stats statistics tables.**
 
 #### [`table_settings.sql`](sql/table_settings.sql) (read permission)
 * **Returns the table-specific settings of each table.**
 
 #### [`table_size.sql`](sql/table_size.sql) (read permission)
-* **Returns the size of each table in bytes**
-* Does not include size of the tables' indices
+* **Returns the size of each table in bytes.**
+* Does not include size of the tables' indices.
 
 #### [`table_size_with_indices.sql`](sql/table_size_with_indices.sql) (read permission)
-* **Returns size of each table in bytes including all indices**
+* **Returns size of each table in bytes including all indices.**
+
+#### [`toast_size.sql`](sql/toast_size.sql) (read permission)
+* **Returns total size of all
+ [TOAST](https://www.postgresql.org/docs/current/storage-toast.html) data in
+ each table in bytes.**
 
 #### [`unused_indices.sql`](sql/unused_indices.sql) (read permission)
-* **Returns indices that are rarely used**
+* **Returns indices that are rarely used.**
 * Note that sometimes the query optimizer will elect to avoid using indices for
- tables with a very small number of rows because it can be more efficient
+ tables with a very small number of rows because it can be more efficient.
 
 #### [`vacuum_stats.sql`](sql/vacuum_stats.sql) (read permission)
-* **Returns autovacuum stats for each table**
+* **Returns autovacuum stats for each table.**
 
 ## Contributing
 

sql/table_size.sql

@@ -1,7 +1,7 @@
 SELECT c.relname AS name,
  pg_size_pretty(pg_table_size(c.oid)) AS size
 FROM pg_class c
-LEFT JOIN pg_namespace n ON (n.oid = c.relnamespace)
+LEFT JOIN pg_namespace n ON n.oid = c.relnamespace
 WHERE n.nspname NOT IN ('pg_catalog', 'information_schema')
 AND n.nspname !~ '^pg_toast'
 AND c.relkind='r'

sql/toast_size.sql

@@ -0,0 +1,8 @@
+SELECT c.relname AS name,
+ pg_size_pretty(pg_total_relation_size(reltoastrelid)) as toast_size
+FROM pg_class c
+LEFT JOIN pg_namespace n ON n.oid = c.relnamespace
+WHERE n.nspname NOT IN ('pg_catalog', 'information_schema')
+ AND n.nspname !~ '^pg_toast'
+ AND c.relkind = 'r'
+ORDER BY pg_total_relation_size(reltoastrelid) DESC NULLS LAST;