Using IF ELSE in Oracle
IF is a PL/SQL construct. If you are executing a query, you are using SQL not PL/SQL.
In SQL, you can use a
CASE statement in the query itself
SELECT DISTINCT a.item, (CASE WHEN b.salesman = 'VIKKIE' THEN 'ICKY' ELSE b.salesman END), NVL(a.manufacturer,'Not Set') Manufacturer FROM inv_items a, arv_sales b WHERE a.co = '100' AND a.co = b.co AND A.ITEM_KEY = b.item_key AND a.item LIKE 'BX%' AND b.salesman in ('01','15') AND trans_date BETWEEN to_date('010113','mmddrr') and to_date('011713','mmddrr')ORDER BY a.item
Since you aren't doing any aggregation, you don't want a
GROUP BY in your query. Are you really sure that you need the
DISTINCT? People often throw that in haphazardly or add it when they are missing a join condition rather than considering whether it is really necessary to do the extra work to identify and remove duplicates.
You can use
Decode as well:
SELECT DISTINCT a.item, decode(b.salesman,'VIKKIE','ICKY',Else),NVL(a.manufacturer,'Not Set')ManufacturerFROM inv_items a, arv_sales bWHERE a.co = b.co AND A.ITEM_KEY = b.item_key AND a.co = '100'AND a.item LIKE 'BX%'AND b.salesman in ('01','15')AND trans_date BETWEEN to_date('010113','mmddrr') and to_date('011713','mmddrr')GROUP BY a.item, b.salesman, a.manufacturerORDER BY a.item