SQL Statement with multiple SETs and WHEREs

user_811132 0
Viewed 174969

I am wondering if this is a valid query:

UPDATE  table
SET ID = 111111259

WHERE ID = 2555

AND SET ID = 111111261

WHERE ID = 2724

AND SET ID = 111111263

WHERE ID = 2021

AND SET ID = 111111264

WHERE ID = 2017
db2 sql
11 Answers

You could do this

WITH V(A,B) AS (VALUES 
     (2555,111111259)    
    ,(2724,111111261)     
    ,(2021,111111263)    
    ,(2017,111111264)    

    )
SELECT COUNT(*) FROM NEW TABLE (
    UPDATE table
    SET id =     (SELECT B FROM V WHERE ID = A)
    WHERE EXISTS (SELECT B FROM V WHERE ID = A)
)

Note, does not works on column organized tables. Use MERGE in that case

user_95253440
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