How to get primary key column in Oracle?

Question

I need to get the name of the primary key column.

In the input, I only have the table name.

Answer 1

Select constraint_name,constraint_type from user_constraints where table_name** **= ‘TABLE_NAME’ ;

(This will list the primary key and then)

Select column_name,position from user_cons_cloumns where constraint_name=’PK_XYZ’; 

(This will give you the column, here PK_XYZ is the primay key name)