diff --git a/cheat/postgresql.md b/cheat/postgresql.md
index d86e727..3707c41 100644
--- a/cheat/postgresql.md
+++ b/cheat/postgresql.md
@@ -26,6 +26,11 @@
 
 `\dn`
 
+### Gets the size of a schema
+```
+SELECT pg_size_pretty(SUM(pg_total_relation_size(quote_ident(schemaname) || '.' || quote_ident(tablename)))::BIGINT) FROM pg_tables WHERE schemaname = 'schema_name'
+```
+
 ### Return back to shell 
 
 `\q`