2026-03-12 20:23:15

tpt/colusage.sql

@@ -0,0 +1,51 @@
+-- Copyright 2018 Tanel Poder. All rights reserved. More info at http://tanelpoder.com
+-- Licensed under the Apache License, Version 2.0. See LICENSE.txt for terms & conditions.
+
+col colusage_owner      head OWNER for a25 wrap
+col colusage_table_name head TABLE_NAME for a25 wrap
+col colusage_column_name head COLUMN_NAME for a25 wrap
+
+prompt Show column usage stats from sys.col_usage$ for table &1..&2....
+prompt Did you run DBMS_STATS.FLUSH_DATABASE_MONITORING_INFO for getting latest stats?
+
+select
+    c.owner            colusage_owner
+  , c.table_name       colusage_table_name
+  , c.column_name      colusage_column_name
+  , u.intcol#
+  , u.equality_preds       
+  , u.equijoin_preds       
+  , u.nonequijoin_preds    
+  , u.range_preds          
+  , u.like_preds           
+  , u.null_preds           
+  , u.timestamp           
+from
+    sys.col_usage$ u
+  , dba_objects    o
+  , dba_tab_cols   c
+where
+    o.object_id  = u.obj#
+and c.owner      = o.owner
+and c.table_name = o.object_name
+and u.intcol#    = c.internal_column_id
+and o.object_type = 'TABLE'
+and  upper(o.object_name) like
+        upper(case
+          when instr('&1','.') > 0 then
+              substr('&1',instr('&1','.')+1)
+          else
+              '&1'
+          end
+             )
+and o.owner like
+    case when instr('&1','.') > 0 then
+      upper(substr('&1',1,instr('&1','.')-1))
+    else
+      user
+    end
+order by
+    o.owner
+  , c.table_name
+  , c.column_name
+/