2026-03-12 20:23:15

tpt/descxx2.sql

@@ -0,0 +1,103 @@
+-- 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.
+
+-- descxx.sql requires the display_raw function which is included in the comment section below.
+-- the display_raw function is taken from Greg Rahn's blog as I'm too lazy to write one myself
+--     http://structureddata.org/2007/10/16/how-to-display-high_valuelow_value-columns-from-user_tab_col_statistics/
+--
+-- create or replace function display_raw (rawval raw, type varchar2)
+--return varchar2
+--is
+--   cn     number;
+--   cv     varchar2(128);
+--   cd     date;
+--   cnv    nvarchar2(128);
+--   cr     rowid;
+--   cc     char(128)
+--begin
+--   if (type = 'NUMBER') then
+--      dbms_stats.convert_raw_value(rawval, cn);
+--      return to_char(cn);
+--   elsif (type = 'VARCHAR2') then
+--      dbms_stats.convert_raw_value(rawval, cv);
+--      return to_char(cv);
+--   elsif (type = 'DATE') then
+--      dbms_stats.convert_raw_value(rawval, cd);
+--      return to_char(cd);
+--   elsif (type = 'NVARCHAR2') then
+--      dbms_stats.convert_raw_value(rawval, cnv);
+--      return to_char(cnv);
+--   elsif (type = 'ROWID') then
+--      dbms_stats.convert_raw_value(rawval, cr);
+--      return to_char(cnv);
+--   elsif (type = 'CHAR') then
+--      dbms_stats.convert_raw_value(rawval, cc);
+--      return to_char(cc);
+--   else
+--      return 'UNKNOWN DATATYPE';
+--   end if;
+--end;
+--/
+--
+-- grant execute on display_raw to public;
+-- create public synonym display_raw for display_raw;
+
+
+
+COL desc_column_id 		HEAD "Col#" FOR A4
+COL desc_table_owner	        HEAD "Table Owner" FOR A25
+COL desc_table_name 	        HEAD "Table Name"  FOR A30
+COL desc_column_name	        HEAD "Column Name" FOR A30
+COL desc_data_type		HEAD "Type" FOR A20 WORD_WRAP
+COL desc_nullable		HEAD "Null?" FOR A10
+COL desc_low_value HEAD "Low Value" FOR A32
+COL desc_high_value HEAD "High Value" FOR A32
+
+BREAK ON desc_table_owner ON desc_table_name SKIP 1
+
+
+--prompt eXtended describe of &1
+
+SELECT
+  owner desc_table_owner,
+  table_name desc_table_name,
+	CASE WHEN hidden_column = 'YES' THEN 'H' ELSE ' ' END||
+	LPAD(column_id,3)	desc_column_id,
+	column_name	desc_column_name,
+	CASE WHEN nullable = 'N' THEN 'NOT NULL' ELSE NULL END AS desc_nullable,
+	data_type||CASE 
+--					WHEN data_type = 'NUMBER' THEN '('||data_precision||CASE WHEN data_scale = 0 THEN NULL ELSE ','||data_scale END||')' 
+					WHEN data_type = 'NUMBER' THEN '('||data_precision||','||data_scale||')' 
+					ELSE '('||data_length||')'
+				END AS desc_data_type,
+--	data_default,
+	num_distinct,
+	density,
+	num_nulls,
+  CASE WHEN histogram = 'NONE'  THEN null ELSE histogram END histogram,
+	num_buckets,
+	display_raw(low_value, data_type)   desc_low_value,
+	display_raw(high_value, data_type)  desc_high_value
+FROM
+	dba_tab_cols
+WHERE
+	upper(table_name) LIKE 
+				upper(CASE 
+					WHEN INSTR('&1','.') > 0 THEN 
+					    SUBSTR('&1',INSTR('&1','.')+1)
+					ELSE
+					    '&1'
+					END
+				     )
+AND	owner LIKE
+		CASE WHEN INSTR('&1','.') > 0 THEN
+			UPPER(SUBSTR('&1',1,INSTR('&1','.')-1))
+		ELSE
+			user
+		END
+ORDER BY
+  owner,
+  table_name,
+	column_id 
+/
+