list Table Constraints

how to view one particular table constraints in oracle
For example i want to view all primary,unique,integrity constraints in emp table
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You can use USER_CONSTRAINTS or ALL_CONSTRAINTS data dictionary to see all the constraints in the Table


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The Constraint_type column in those data dictionary is used to determine the type of constraint.

P - Primary Key
U - Unique Key

so you write

Select * from all_constraints
where table_name = 'EMP'
and Constraint_Type in ('P','U');

awking00Information Technology SpecialistCommented:
To get both,
select constraint_name
from all_constraints a
where table_name = 'EMP'
and constraint_type = 'P'
and exists
(select 1
 from all_constraints b
 where table_name = 'EMP'
 and constraint_type = 'U'
 and a.constraint_name = b.constraint_name);

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