我有一个包含大学统计数据的表格,如下所示:
StatID | UniversityID | StatValue
1 | 1 | 100
2 | 1 | 90
3 | 1 | 80
1 | 2 | 50
2 | 2 | 55
我想要一个查询返回这样的内容:
(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;
我收到错误FOR UniversityID IN (1,
说:
Incorrect syntax near '1'. Expecting ID, QUOTED_ID, or '.'.
我究竟做错了什么?int
作为列标题?
我将使用它来处理约 260,000 行(约 300 列和约 3,000 行)
答案
您的 IN 语法错误:
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;