identify difference from NUMBER(5) and NUMBER(8,2) USER_TAB_COLUMNS

Question

I want to get the columns names and datatype and its datatype\'s length .as example

if there is a table

SQL> create table TestTable(
  2    ID                


        

Answer 1

Why don't you try SELECT * FROM information_schema.columns ?

It has columns "table_schema, table_name, column_name, ordinal_position, is_nullable, data_type, character_maximum_length, character_octet_length, numeric_precision, numeric_scale, datetime_precision", etc.