我有一张表格,其中包含大学的统计数据,如下所示:
StatID | UniversityID | StatValue
1 | 1 | 100
2 | 1 | 90
3 | 1 | 80
1 | 2 | 50
2 | 2 | 55
我想查询返回这样的事情:
(Rows are StatIDs, Columns are UniversityIDs)
StatID | 1 | 2 | 3
1 | 100 | 50 | NULL
2 | 90 | 55 | NULL
3 | 80 | NULL | NULL
这是我的查询:
SELECT StatID, 1, 2, 3
FROM
(SELECT StatID, UniversityID, StatValue FROM @table) up
PIVOT
(MAX(StatValue) FOR UniversityID IN (1, 2, 3)) AS pvt
ORDER BY StatisticID;
我在
FOR UniversityID IN (1,
上收到一条错误消息:Incorrect syntax near '1'. Expecting ID, QUOTED_ID, or '.'.
我究竟做错了什么?它与
int
作为列标题有关吗?我将在约260,000行(约300列和约3,000行)中使用它
最佳答案
您有IN错误的语法:
SELECT StatisticID, 1, 2, 3
FROM
(SELECT StatisticID, UniversityID, Value
FROM @table) up
PIVOT
(MAX(Value) FOR UniversityID IN ([1], [2], [3])) AS pvt
ORDER BY StatisticID;