Question

I am very new to Oracle, i am developing a query to my project. For me it seems to be everything is OK but when executing the query oracle is giving the error “ORA-00905: missing keyword”.

Her is my query::

SELECT DISTINCT ba.uuid AS uuid
     , COUNT(*) over() AS rowcount 
FROM basicaddress ba 
WHERE ba.postalcode='143456' 
   OR ba.lastname LIKE '%143456%' 
   OR ba.city LIKE '%143456%'
GROUP BY CASE WHEN ba.postalcode='143456' THEN ba.postalcode, ba.uuid END
       , CASE WHEN ba.lastname LIKE '%143456%' THEN ba.lastname, ba.uuid END
       , CASE WHEN ba.city LIKE '%143456%' THEN ba.city, ba.uuid 
                                           ELSE ba.postalcode,ba.uuid END 
ORDER BY CASE WHEN ba.postalcode='143456' THEN ba.postalcode END DESC
       , CASE WHEN ba.lastname LIKE '%143456%' THEN ba.lastname END ASC
       , CASE WHEN ba.city LIKE '%143456%' THEN ba.city ASC 
                                           ELSE ba.postalcode END DESC

What Key word i am missing ? Any help will be greatly appreciated.

Answer 1

The error is in your CASE statements

CASE 
  WHEN ba.postalcode='143456' 
  THEN ba.postalcode, ba.uuid  <-- here. You can return value of only one column
END;                          

You have to decide between ba.postalcode and ba.uuid. Or, if you want to see values of both columns in your final result set concatenate them using || operator or CONCAT function using implicit or explicit type conversion.