配对列中的数据在asp.net安排

Question

**CODE** **TYPE** 
-------------------- 
    XXOPT  POD 
    XXOPT  FPOD 
    MSC  OPR 
    KLM  OPR 
    40DV  SZTP 
    90DV  SZTP 
    MMVD  POD 
    KKLP  FPOD 
    SSRG  FPOD 

我有一个数据表COMING FROM数据的基础上

我想告诉我的结果LIKE以下格式

注：此处POD，FPOD，OPR，SZTP是静态的类型

POD: XXOPT,MMVD 
FPOD: XXOPT,KKLP,SSRG 
OPR: MSC,KLM 
SZTP: 40DV, 90DV 

    WILL YOU PLESSE HELP ME TO SHOW ABOVE FORMAT AS OUT PUT. 

Answer 1

DECLARE @MyTable TABLE(
    [CODE] NVARCHAR(50) NOT NULL, 
    [TYPE] NVARCHAR(50) NOT NULL 
); 
INSERT @MyTable ([CODE],[TYPE]) 
SELECT 'XXOPT','POD' 
UNION ALL SELECT 'XXOPT','FPOD' 
UNION ALL SELECT 'MSC','OPR' 
UNION ALL SELECT 'KLM','OPR' 
UNION ALL SELECT '40DV','SZTP' 
UNION ALL SELECT '90DV','SZTP' 
UNION ALL SELECT 'MMVD','POD' 
UNION ALL SELECT 'KKLP','FPOD' 
UNION ALL SELECT 'SSRG','FPOD'; 

SELECT x.[TYPE],y.GROUP_CONCAT 
FROM (SELECT [TYPE] FROM @MyTable GROUP BY [TYPE]) x 
CROSS APPLY(
    SELECT STUFF((SELECT ','+y.CODE 
    FROM @MyTable y 
    WHERE y.[TYPE]=x.[TYPE] 
    FOR XML PATH('')),1,1,'') AS GROUP_CONCAT 
)y; 

结果：

TYPE GROUP_CONCAT 
---- --------------- 
FPOD XXOPT,KKLP,SSRG 
OPR MSC,KLM 
POD XXOPT,MMVD 
SZTP 40DV,90DV 

注意：在这种情况下，您需要（[TYPE]）+ INCLUDE（[CODE]）或（[TYPE]，[CODE]）上的索引。