Question

Trying to do a diff of 2 tables with same data layout and have mismatch records on sameline

Table1                   Table2
------                   ------

CUSTOMER PART            CUSTOMER  PART

CUSTID1  PART1           CUSTID1  PART1
CUSTID1  PART2           CUSTID1  PART2
CUSTID1  PART3           CUSTID1  PART3
CUSTUD1  PART4


SELECT T1.CUSTID, T1.PART, T2.CUSTID, T2.PART FROM TABLE1 AS T1
LEFT JOIN TABLE2 AS T2 ON T1.CUSTID = T2.CUSTID
WHERE  T1.PART <>  T2.PaRT
ORDER BY T1.CUSTID 

Sometimes the output look like below – it shows a mismatch when there isn’t one.
CAn I order the tables before the join to get the data to line up ?

Thanks

CUSTID1  PART1           CUSTID1  PART3
CUSTID1  PART2           CUSTID1  PART1
CUSTID1  PART3           CUSTID1  PART2
CUSTUD1  PART4           NULL     NULL

Answer 1

You need to do something like:

SELECT T1.CUSTID, T1.PART, T2.CUSTID, T2.PART 
FROM TABLE1 AS T1 
     INNER JOIN TABLE2 AS T2 ON T1.CUSTID = T2.CUSTID 
WHERE T1.PART <> T2.PaRT

There’s no need to use left outer join. The order by clause doesn’t make any difference in result of join; it just orders the result.