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Oracle constraints

Update foreign keys with new value in Oracle


Suppose you have a table and you want to change one of this table primary id. you can use the following scrpit.primary ID here is "PK_S"

BEGIN
 FOR i IN (SELECT a.table_name, c.column_name
 FROM user_constraints a, user_cons_columns c
 WHERE a.CONSTRAINT_TYPE = 'R'
 AND a.R_CONSTRAINT_NAME = 'PK_S'
 AND c.constraint_name = a.constraint_name) LOOP

 EXECUTE IMMEDIATE 'update ' || i.table_name || ' set ' || i.column_name ||
 '=to_number(''1000'' || ' || i.column_name || ') ';


 END LOOP;
END;


Conclusion

In this page (written and validated by ) you learned about Oracle constraints . What's Next? If you are interested in completing Oracle tutorial, your next topic will be learning about: Oracle Disable all related foreign keys in oracle.



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