連接多個行到一個場

Question

我有一個表中包含的圖像（源）3列，並要編寫給像圖像（結果）表查詢

塔103

Answer 1

SELECT DISTINCT customer, 
    stuff((
      SELECT ',' + cast(policy as varchar(10)) 
      FROM table1 b 
      WHERE a.customerid = b.customerid 
      FOR XML path('') 
      ), 1, 1, '') [policies] 
FROM table1 a