Get Primary, Foreign, Unique and Identity Key ColumnName

Hi all,
I wants to get the PrimaryKey, ForeignKey, UniqueKey, IdentityKey column names. I tried with the below query. But it returns all the ColumnName in the table.
DECLARE @TableName nVarchar(256)
SET @TableName = 'PkFkIkTest'
SELECT DISTINCT col.COLUMN_NAME, col.DATA_TYPE, col.TABLE_NAME
FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS tblCons
INNER JOIN INFORMATION_SCHEMA.COLUMNS AS col ON col.TABLE_NAME = tblCons.TABLE_NAME AND tblCons.TABLE_NAME = @TableName
WHERE
tblCons.CONSTRAINT_TYPE = 'PRIMARY KEY'
OR tblCons.CONSTRAINT_TYPE = 'FOREIGN KEY'
OR tblCons.CONSTRAINT_TYPE = 'UNIQUE'
OR COLUMNPROPERTY (OBJECT_ID(col.Table_Name), col.Column_Name,'IsIdentity') = 1
Thanks,
Babu Kumarasamy

Can't able to get the identity column name.
So I changed like below.
DECLARE
@TableName NVARCHAR(50)SET
@TableName = 'PkFkIkTest'SELECT
col.COLUMN_NAME,C
.DATA_TYPE ,col
.TABLE_NAME, tblCons.CONSTRAINT_TYPEFROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS tblCons
INNER JOIN INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE AS colON tblCons.CONSTRAINT_NAME = col.CONSTRAINT_NAME
INNER JOIN INFORMATION_SCHEMA.COLUMNS CON col.TABLE_NAME = C.TABLE_NAME
AND col.COLUMN_NAME = C.COLUMN_NAMEWHERE
tblCons.TABLE_NAME = @TableNameAND
(
--COLUMNPROPERTY (OBJECT_ID(colU.Table_Name), colU.Column_Name,'IsIdentity') = 1 ORtblCons
.CONSTRAINT_TYPE = 'PRIMARY KEY'
OR tblCons.CONSTRAINT_TYPE = 'FOREIGN KEY'
OR tblCons.CONSTRAINT_TYPE = 'UNIQUE'
)UNION
SELECT
c.name AS COLUMN_NAME, t.name as DATA_TYPE, @TableName as TABLE_NAME, 'IDENTITY' AS CONSTRAINT_TYPEFROM SYS.COLUMNS c
INNER JOIN SYS.OBJECTS o
ON BJECT_ID = c.OBJECT_IDAND C.is_identity= 1
AND BJECT_ID = OBJECT_ID(@TableName)JOIN SYS.TYPES AS t ON c.user_type_id=t.user_type_id