Sqlserver query using Group by and Order by

Question

SUM(BILL_DETAIL.x_bill_quantity) as BILL_QUANTITY,
MIN(BILL_DETAIL.x_billable_to) as BILLABLE_TO,
MIN(BILL_DETAIL.x_billable_yn) as BILLABLE_YN,
AVG(BILL_DETAIL.x_bill_rate) as BILL_RATE,
MIN(BILL_DETAIL.x_cost_rate) as COST_RATE,
MIN(BILL_DETAIL.x_cost_total) as COST_TYPE,
LISTAGG(BILL_DETAIL.objid, ',') WITHIN GROUP(ORDER BY BILL_DETAIL.objid) as ID_LIST
FROM table_x_gsa_bill_detail BILL_DETAIL
WHERE (1=1)
GROUP BY (DECODE(BILLABLE_YN, 1, 'Billable', 'Non-Billable') || ',' || BILLABLE_TO || ',' || DETAIL_CLASS || ',' || COST_TYPE || ',' || BILL_RATE)
ORDER BY DECODE(BILLABLE_YN, 1, 'Billable', 'Non-Billable') || ',' || BILLABLE_TO || ',' || DETAIL_CLASS ||
) dt WHERE rn BETWEEN 0 AND 1
Can any one pls help me using of Case Condition keyword instead of Decode in the above query ??? iam not able to convert above query for group by and order by..
Actually i need to do group by the aggragate values which i got the values from the fields of BILLABLE_YN,BILLABLE_TO,DETAIL_CLASS, COST_TYPE, BILL_RATE.
where as in oracle i can run above query using decode keyword where as in sqlserver iam not able to use BILLABLE_YN field alias of above query in group by .
i tried like by using following way but it is wrong because here iam not using aggragate values of fields in group by funtion please help me in converting query in sqlserver. GROUP BY (case BILLABLE_YN when 1 then 'Billable' when 0 then 'Non-Billable' else
'Non-Billable' End BILLABLE_YN + ',' + BILLABLE_TO + ',' + DETAIL_CLASS + ',' + COST_TYPE + ',' + BILL_RATE)
Krishna

Answer 1

CREATE TABLE DETAIL
([objid] int,[x_billable_to] varchar(19), [x_bill_quantity] int,
[x_billable_yn] int, [x_bill_rate] int, [COST_TYPE] varchar(19) )
INSERT INTO
DETAIL
([objid], [x_billable_to], [x_bill_quantity], [x_billable_yn], [x_bill_rate],[COST_TYPE])
VALUES
(1, 'Customer', 3, 1, 20,'Parking'),
(2, 'Customer', 1, 1, 25,'Toll'),
(3, 'Customer', 2, 1, 20,'Parking') 
Pls convert following query for executing query in sqlserver  ..for the column ID_List it should return data like 1,2,3
SELECT * FROM (SELECT 1 rn,
        SUM(BILL_DETAIL.x_bill_quantity)      as BILL_QUANTITY,
        MIN(BILL_DETAIL.x_billable_to)        as BILLABLE_TO,
        MIN(BILL_DETAIL.x_billable_yn)        as BILLABLE_YN,
        AVG(BILL_DETAIL.x_bill_rate)          as BILL_RATE,
        LISTAGG(BILL_DETAIL.objid, ',') WITHIN GROUP(ORDER BY BILL_DETAIL.objid) as ID_LIST
     FROM   BILL_DETAIL
      WHERE (1=1)
 GROUP BY (DECODE(x_billable_yn, 1, 'Billable', 'Non-Billable') + ',' + x_billable_to  +  ',' + COST_TYPE + ',' + x_bill_rate)
      ORDER BY DECODE(x_billable_yn, 1, 'Billable', 'Non-Billable') + ',' + x_billable_to  +  ',' + COST_TYPE + ',' + x_bill_rate
       )dt 
WHERE rn BETWEEN 0 AND 1
Krishna
sounds like this
SELECT *
FROM
SELECT 1 rn,
SUM(BILL_DETAIL.x_bill_quantity) as BILL_QUANTITY,
MIN(BILL_DETAIL.x_billable_to) as BILLABLE_TO,
MIN(BILL_DETAIL.x_billable_yn) as BILLABLE_YN,
AVG(BILL_DETAIL.x_bill_rate) as BILL_RATE,
LEFT(bd1.ID_LIST,LEN(bd1.ID_LIST)-1) AS ID_Listing
FROM BILL_DETAIL bd
CROSS APPLY (
SELECT BILL_DETAIL.objid + ',' AS [text()]
FROM BILL_DETAIL
WHERE objid = bd.objid
FOR XML PATH('')
)bd1(ID_LIST)
WHERE (1=1)
GROUP BY (CASE WHEN x_billable_yn = 1 THEN 'Billable' ELSE 'Non-Billable'END + ',' + x_billable_to + ',' + COST_TYPE + ',' + x_bill_rate),
LEFT(bd1.ID_LIST,LEN(bd1.ID_LIST)-1)
ORDER BY (CASE WHEN x_billable_yn = 1 THEN 'Billable' ELSE 'Non-Billable'END + ',' + x_billable_to + ',' + COST_TYPE + ',' + x_bill_rate),
LEFT(bd1.ID_LIST,LEN(bd1.ID_LIST)-1)
)dt
WHERE rn BETWEEN 0 AND 1
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