Question

我想在此查询中添加计数器任何想法？

SELECT 
STUFF((
    SELECT ' , vol' + counter +' : ' + t2.ViaLocValue  
    FROM Book_ViaLocat t2
    WHERE t2.BookId = t1.BookId
    FOR XML PATH (''))
  ,1,2,'') AS Names
FROM Book_ViaLocat t1
WHERE t1.BookId = '167698'
GROUP BY t1.BookId;

结果是这样的第1卷：java2，第2卷：java3，第3卷：java4

Answer 1

使用ROW_NUMBER（）：

SELECT 
STUFF((
    SELECT ' ,vol' + CAST(ROW_NUMBER() OVER (ORDER BY t2.ViaLocValue) AS VARCHAR(4))+
           ' : ' + t2.ViaLocValue  
    FROM Booking_ViaLocat t2
    WHERE t2.BookingId = t1.BookId
    FOR XML PATH (''))
  ,1,2,'') AS Names
FROM Booking_ViaLocat t1
WHERE t1.BookId = '167698'
GROUP BY t1.BookId;

Answer 2

可以使用＆＃34; ROW_NUMBER（）＆＃34;，你可以根据你的愿望对你的表值进行排序（如果你愿意，可以在roder上更改它）。请按照以下代码:)

SELECT 
STUFF((
    SELECT ' ,vol' + ROW_NUMBER() OVER(ORDER BY t1.BookId asc) AS Row +' : ' + t2.ViaLocValue  
    FROM Booking_ViaLocat t2
    WHERE t2.BookingId = t1.BookId
    FOR XML PATH (''))
  ,1,2,'') AS Names
FROM Booking_ViaLocat t1
WHERE t1.BookId = '167698'
GROUP BY t1.BookId;

SQL SERVER STUFF功能增量计数器

2 个答案: