Question

UPDATE: Thanks for all your help guys! I just need to take a litte bit of time to tlook through the results and I will definitely mark the answer. Really appreciate everyone’s feedback!

I have the following query that needs to be converted from Oracel PL/SQL to T-SQL to accomodate a data source change. I’ve already done the work needed to isolate the logic (still written in PL/SQL) and merely need to adjust the remaining parts. Things like TO_DATE have, in particular, been tricky to convert so I decided to turn to StackOverflow.

I have already heard about the SwisSQL tool but as this is just an isolated instance of a single query that needs conversion using that product in not a possibility. Any and all help in converting the query to use proper T-SQL synthax would be greatly appreciated. Thank you for your time and here’s the query in question:

 SELECT
            F.TYPE_ID,
            TRIM(f.event_type_name),
            TRIM(e.event_name),
            NVL(trim(e.event_title),' '),
            e.cur_event_state,
            TO_CHAR(D.EV_START_DT, 'YYYYMMDD') ,
            TO_CHAR(D.EV_START_DT,'HH24MI') ,
            TO_CHAR(D.EV_END_DT, 'YYYYMMDD') ,
            TO_CHAR(D.EV_END_DT,'HH24MI') ,
            TO_char(d.EV_START_DT, 'D')
    from rooms C,
         SP_RESERVATIONS D,
         EVENTS E,
         event_types f
    where @Room = TRIM(replace(C.room_short(+),'-','*'))
AND C.ROOM_ID = D.ROOM_ID
      AND D.EVENT_ID = E.EVENT_ID
      and e.event_type_id = f.type_id
      and f.type_id in ('22','40','70','71','72','105','121','119')
      AND (D.EV_START_DT
                     BETWEEN TO_DATE(:WS-TERM-START-DATE,'YYYYMMDD')
                        AND TO_DATE(:WS-TERM-END-DATE,'YYYYMMDD')
       OR  D.EV_END_DT
                     BETWEEN TO_DATE(:WS-TERM-START-DATE,'YYYYMMDD')
                        AND TO_DATE(:WS-TERM-END-DATE,'YYYYMMDD'))
      and not e.cur_event_state = '59'

Thanks!

Answer 1

Ok, try this query:

SELECT f.type_id, 
       LTRIM(RTRIM(f.event_type_name)), 
       LTRIM(RTRIM(e.event_name)), 
       ISNULL(LTRIM(RTRIM(e.event_title)), ' '), 
       e.cur_event_state, 
       CONVERT(VARCHAR(8), d.ev_start_dt, 112), 
       CONVERT(VARCHAR(5), d.ev_start_dt, 114), 
       CONVERT(VARCHAR(8), d.ev_end_dt, 112), 
       CONVERT(VARCHAR(5), d.ev_end_dt, 114), 
       DATENAME(DAY, d.ev_start_dt) 
FROM   rooms c 
       INNER JOIN sp_reservations d 
         ON c.room_id = d.room_id 
       INNER JOIN [EVENTS] e 
         ON d.event_id = e.event_id 
       INNER JOIN event_types f 
         ON e.event_type_id = f.[type_id] 
WHERE  @Room = RTRIM(LTRIM(REPLACE(c.room_short, '-', '*'))) 
       AND f.[type_id] IN ( '22', '40', '70', '71', 
                            '72', '105', '121', '119' ) 
       AND ( d.ev_start_dt BETWEEN CONVERT(DATETIME, [WS-TERM-START-DATE], 112) 
                                   AND 
                                         CONVERT(DATETIME, [WS-TERM-END-DATE], 
                                         112) 
              OR d.ev_end_dt BETWEEN CONVERT(DATETIME, [WS-TERM-START-DATE], 112 
                                     ) AND 
                                         CONVERT(DATETIME, [WS-TERM-END-DATE], 
                                         112) ) 
       AND NOT e.cur_event_state = '59'