如果列包含逗號分隔值，請創建單獨的行

Question

假設我們有一個簡單的選擇查詢，它返回如下所示的結果

   FirstName          LastName                     PayScale
   -----------        ------------                ---------------
    Craig              L                             150000
    Alice,Lisa         simons                        100000

所以如果我們用逗號分隔的名字，那么我想要這樣的結果

   FirstName          LastName                     PayScale
   -----------        ------------                ---------------
    Craig              L                             150000
    Alice              simons                        100000
    Lisa               simons                        100000

Answer 1

您可以將查詢編寫為：

DECLARE @employee TABLE (FirstName  VARCHAR(100),
                         LastName   VARCHAR(100),
                         PayScale INT)

INSERT INTO @employee VALUES 
('Craig','L',150000) , 
('Alice,Lisa','simons',100000)



SELECT Split.a.value('.', 'VARCHAR(100)') AS FirstName  , LastName  ,PayScale
       FROM  (SELECT  CAST ('<M>' + REPLACE(FirstName, ',', '</M><M>') + '</M>' 
                             AS XML) AS FirstName ,  LastName    ,PayScale
               FROM  @employee) 
       AS A 
CROSS APPLY FirstName.nodes ('/M') AS Split(a)