我有一个由几列组成的表，包括键值对。想象一下:
BookID, Key, Value
MyBook, Price, 19.99
MyBook, ISBN, 987878495793
MyBook, Pages, 354
MyBook2, ...., ....
MyBook2, ...., ....
我需要将其转化为以下格式:
BookID, Price, ISBN, Pages
MyBook, 19.99, 987878495793, 354
MyBook2,.....,.............,....
即转置单元格 - 我将如何在 SQL 中执行此操作？
最佳答案
是这样的吗？
SELECT
BookID, Price, ISBN, Pages
FROM
(
SELECT BookID, Key, Value FROM yourTable
)
AS SourceTable
PIVOT
(
SUM(Value) FOR Key IN (Price, ISBN, Pages)
)
AS PivotTable
ORDER BY
BookID
http://technet.microsoft.com/en-us/library/ms177410(SQL.105).aspx
关于sql - 转置键值对 SQL 表，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/11224954/