顯示行數據作爲源碼

Question

列我有一個DB表與下面結構SQLITE

Name  Count   Type 
Roy   3    CA 
Roy   2    BT 
John   2    CA 
John   1    BT 

需要一個查詢，可以顯示像下面的上述數據（源碼）

Name   count  CA  BT 
Roy   5   3  2 
John   3   2  1 

感謝

Answer 1

有SQLite中沒有旋轉，但你可以用很多subquerys的：

SELECT DISTINCT name, 
    (SELECT sum([count]) FROM test tst WHERE tst.name = test.name) as count, 
    (SELECT sum([count]) FROM test tst WHERE tst.name = test.name AND type='CA') as CA, 
    (SELECT sum([count]) FROM test tst WHERE tst.name = test.name AND type='BT') as BT 
    FROM test 

假設表名「測試」