Drop Foreign Key without knowing the name of the constraint?

Question

I have created one table using below command:

create table Table1(
    Id int Not Null 
        Foreign key 
        references Table2(Id)  
        on delet         


        

Answer 1

Similar to Ed's Answer but you can use this to select the key name based on the table and column name.

That way you can run it in a script or maybe as a subquery to drop the constraint.

SELECT CONSTRAINT_NAME
FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
WHERE TABLE_NAME =  'post'
AND COLUMN_NAME =  'userID'