Columns with the same name but different data or precision length.

DB version: 10 gr 2

In a diagram, I need to find all of the columns with the same name but different or precision data length (if the column is of type number). I know I have to use the USER_TAB_COLS view for this. But I need to find a logic to compare the names of columns and its lengths.

something like

select t1.table_name
     , t1.column_name
     , t1.data_type
     , t1.data_length
     , t2.table_name
     , t2.column_name
     , t2.data_type
     , t2.data_length
  from user_tab_columns t1
     , user_tab_columns t2
 where t1.table_name != t2.table_name
   and t1.column_name = t2.column_name
   and t1.data_type = t2.data_type
   and t1.data_length != t2.data_length

... could be a starting point.

Tags: Database

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