Update a record using apache nifi

What I am trying to do is exactly same as here

But when I use QueryRecord processor I get an error :

Error while preparing statement.

In my scenario, I have 60+ columns and I want to perform this only on the 59th column.

SQL statement :

select ... (many columns),
case when MSISDN=1994 then 0
when MSISDN=94 then 0
end MSISDN,
..(another a few columns)
from Flowfile

I just want to replace 1994 or 94 with 0.

Do I have to use another processor for this?

As the error message states

Error while preparing statement.

your SQL query is invalid.

Input:

ID,MSISDN,FOO
1,1994,X
2,94,Y

Query:

SELECT ID,
    CASE 
        WHEN MSISDN=1994 THEN 0
        WHEN MSISDN=94 THEN 1
    END MSISDN,
    CASE 
        WHEN FOO='X' THEN 'BAR'
        WHEN FOO='Y' THEN 'BAZ'
    END FOO
FROM Flowfile

Output:

Flow:

QueryRecord properties:

PS: if you still can't create a valid query, add the full query to your question, so we can figure out what's wrong.