[sql] Display names of all constraints for a table in Oracle SQL

I have defined a name for each of the constraint for the multiple tables that I have created in Oracle SQL.

The problem is that to drop a constraint for the column of a particular table I need to know the name that I have supplied for each constraints, which I have forgotten.

How do I list out all the names of constraints that I have specified for each column of a table?

Is there any SQL statement for doing so?

This question is related to sql oracle oracle11g constraints

The answer is


select constraint_name,constraint_type 
from user_constraints
where table_name = 'YOUR TABLE NAME';

note: table name should be in caps.

In case you don't know the name of the table then,

select constraint_name,constraint_type,table_name 
from user_constraints;

Often enterprise databases have several users and I'm not aways on the right one :

SELECT * FROM ALL_CONSTRAINTS WHERE table_name = 'YOUR TABLE NAME' ;

Picked from Oracle documentation


maybe this can help:

SELECT constraint_name, constraint_type, column_name
from user_constraints natural join user_cons_columns
where table_name = "my_table_name";

cheers


SELECT * FROM USER_CONSTRAINTS

Use either of the two commands below. Everything must be in uppercase. The table name must be wrapped in quotation marks:

--SEE THE CONSTRAINTS ON A TABLE
SELECT COLUMN_NAME, CONSTRAINT_NAME FROM USER_CONS_COLUMNS WHERE TABLE_NAME = 'TBL_CUSTOMER';

--OR FOR LESS DETAIL
SELECT CONSTRAINT_NAME FROM USER_CONSTRAINTS WHERE TABLE_NAME = 'TBL_CUSTOMER';

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