How to compare two rows from two table with different data

Question

how to compare two rows from two table with different data
e.g.
Table 1
ID   DESC
1     aaa
2     bbb
3     ccc
Table 2
ID   DESC
1     aaa
2     xxx
3     ccc
Result
2

Answer 1

Create
table tab1(ID
int ,DE char(10))
Create
table tab2(ID
int ,DE char(10))
Insert
into tab1 Values
(1,'aaa')
Insert
into tab1  Values
(2,'bbb')
Insert
into tab1 Values(3,'ccc')
Insert
into tab1 Values(4,'dfe')
Insert
into tab2 Values
(1,'aaa')
Insert
into tab2  Values
(2,'xx')
Insert
into tab2 Values(3,'ccc')
Insert
into tab2 Values(6,'wdr')
SELECT 
tab1.ID,tab2.ID
As T2 from tab1
FULL
join tab2 on tab1.ID
= tab2.ID  
WHERE
BINARY_CHECKSUM(tab1.ID,tab1.DE)
<> BINARY_CHECKSUM(tab2.ID,tab2.DE)
OR tab1.ID
IS NULL
OR 
tab2.ID IS
NULL
ID column considered as a primary Key
Apart from different record,Above query populate missing record in both tables.
Result Set
ID ID 
2  2
4 NULL
NULL 6
ganeshk