How to fetch the system generated check constraint name of table column in oracle

Question

I have created my TEST_TABLE table using below query in oracle

  CREATE TABLE \"PK\".\"TEST_TABLE\" 
   (    \"MYNAME\" VARCHAR2(50),  
      \"MYVA         


        

Answer 1

There are two ways. First (recommended) - to give name to constraints when creating it. Second - to search in ALL_CONS_COLUMNS (or USER_CONS_COLUMNS) system view.
You need something like this:

select constraint_name
  from all_cons_columns
 where table_name = 'TEST_TABLE'
   and owner = 'PK'
   and column_name = 'MYVAL1'

See documentation: https://docs.oracle.com/cloud/latest/db121/REFRN/refrn20045.htm#REFRN20045