基於特定標準

Question

以列的最大需要你的幫助來獲得CAP_PRICE的基礎上在SQL中的select語句一定的標準最大：

IF sid_rnk =0 and prd_id_rnk =1 and cap_price <> 0 
    then Max(cap_price) group by (sid_rnk,prd_rnk) as CAP1 

Else if sid_rnk =0 and prd_id_rnk =2 and cap_price <> 0 and cap1 = 0 
    then Max(cap_price) group by (sid_rnk,prd_rnk) as cap2 

Else if sid_rnk =0 and prd_id_rnk =3 and cap_price <> 0 and cap2 = 0 
    then Max(cap_price) group by (sid_rnk,prd_rnk) as cap3 

Else if sid_rnk =1 and prd_id_rnk =1 and cap_price <> 0 and cap3 = 0 
    then Max(cap_price) group by (sid_rnk,prd_rnk) as cap4 

Else if sid_rnk =1 and prd_id_rnk =2 and cap_price <> 0 and cap4 = 0 
    then Max(cap_price) group by (sid_rnk,prd_rnk) as cap5 

Else if sid_rnk =1 and prd_id_rnk =3 and cap_price <> 0 and cap5 = 0 
    then Max(cap_price) group by (sid_rnk,prd_rnk) 

樣本數據：

CREATE TABLE sap_prod 
(
prd_id_rnk int, 
sld_to_rnk int, 
CAP_geo_1 varchar(20), 
F_I_geo_2 varchar(20), 
CAP_price int 
) 


INSERT INTO sap_prod  
     (prd_id_rnk, sld_to_rnk, CAP_geo_1, F_I_geo_2, CAP_price) 
SELECT  1,0,'ASMO','ASMO',0 UNION ALL 
SELECT  1,0,'ASMO','ASMO',0 UNION ALL 
SELECT  1,0,'ASMO','ASMO',0 UNION ALL 
SELECT  2,0,'WW' ,'ASMO',0 UNION ALL 
SELECT  2,0,'WW' ,'ASMO',0 UNION ALL 
SELECT  2,0,'WW' ,'ASMO',0 UNION ALL 
SELECT  3,0,'EMEA','ASMO',0 UNION ALL 
SELECT  3,0,'EMEA','ASMO',0 UNION ALL 
SELECT  3,0,'IJKK','ASMO',0 UNION ALL 
SELECT  3,0,'IJKK','ASMO',0 UNION ALL 
SELECT  1,1,'ASMO','ASMO',0 UNION ALL 
SELECT  1,1,'ASMO','ASMO',0 UNION ALL 
SELECT  1,1,'ASMO','ASMO',0 UNION ALL 
SELECT  2,1,'WW' ,'ASMO',0 UNION ALL 
SELECT  2,1,'WW' ,'ASMO',0 UNION ALL 
SELECT  2,1,'WW' ,'ASMO',0 UNION ALL 
SELECT  3,1,'EMEA','ASMO',35 UNION ALL 
SELECT  3,1,'EMEA','ASMO',40 UNION ALL 
SELECT  3,1,'IJKK','ASMO',70 UNION ALL 
SELECT  3,1,'IJKK','ASMO',50 

的結果應該是：70

Answer 1

不知道，但我認爲你需要這個：

SELECT TOP 1 cap_price 
FROM 
(
    SELECT sld_to_rnk, prd_id_rnk, Max(cap_price) AS cap_price 
    FROM sap_prod 
    WHERE cap_price <> 0 
    group by sld_to_rnk, prd_id_rnk 
) AS tmp 
ORDER BY sld_to_rnk, prd_id_rnk