Sql server 如何使用联接和Groupby编写透视查询
您好,我已经创建了一个MS SQL查询,它正在生成完美的结果。但是我需要更改行和列的值。我在网上搜索并学习了PIVOT以改变方向。我已经创建了一些小的查询,但我无法将其用于连接和分组,任何帮助都将不胜感激 这是我的查询和输出Sql server 如何使用联接和Groupby编写透视查询,sql-server,pivot-table,Sql Server,Pivot Table,您好,我已经创建了一个MS SQL查询,它正在生成完美的结果。但是我需要更改行和列的值。我在网上搜索并学习了PIVOT以改变方向。我已经创建了一些小的查询,但我无法将其用于连接和分组,任何帮助都将不胜感激 这是我的查询和输出 SELECT AttendanceDate,count(attendance)AS attendanceCount,AttOPt.Name AS AttendanceStatus,emp.Name AS MarkedBy FROM Attendance LEFT OUTER
SELECT AttendanceDate,count(attendance)AS attendanceCount,AttOPt.Name AS AttendanceStatus,emp.Name AS MarkedBy FROM Attendance
LEFT OUTER JOIN AttendanceOption AttOPt
ON AttOPt.ID=Attendance
LEFT OUTER JOIN Employee emp
on MarkedBy=emp.Id
GROUP BY AttendanceDate,Attendance,MarkedBy,AttOPt.Name,emp.Name
我喜欢这样的输出:
AttendanceDate Present Absent Half Day WithoutNotification MarkedBy
14-08-2013 11 0 0 0 Anuj Koundal
30-08-2013 4 3 2 2 Anuj Koundal
试试这个-
SELECT *
FROM (
SELECT AttendanceDate
, attendanceCount = COUNT(attendance)
, AttendanceStatus = AttOPt.name
, MarkedBy = emp.name
FROM Attendance
LEFT JOIN AttendanceOption AttOPt ON AttOPt.id = Attendance
LEFT JOIN Employee emp ON MarkedBy = emp.id
GROUP BY
AttendanceDate
, Attendance
, AttOPt.name
, emp.name
) t
PIVOT
(
SUM(attendanceCount)
FOR AttendanceStatus IN ([Present], [Absent], [Half Day], [WithoutNotification])
) p
ORDER BY AttendanceDate DESC
更新:
-- variant #1
SELECT
AttendanceDate
, MarkedBy
, [Present] = ISNULL([Present], 0)
, [Absent] = ISNULL([Absent], 0)
, [Half Day] = ISNULL([Half Day], 0)
, [WithoutNotification] = ISNULL([WithoutNotification], 0)
FROM (
...
) t
PIVOT
(
...
) p
-- variant #2
SELECT *
FROM (
SELECT
AttendanceDate
, attendanceCount = COUNT(attendance)
, AttendanceStatus = AttOPt.name
, MarkedBy = emp.name
FROM Attendance
JOIN AttendanceOption AttOPt ON AttOPt.id = Attendance
JOIN Employee emp ON MarkedBy = emp.id
GROUP BY ALL
AttendanceDate
, Attendance
, AttOPt.name
, emp.name
) t
PIVOT
(
...
) p
DECLARE @Columns NVARCHAR(MAX)
SELECT @Columns = STUFF((
SELECT DISTINCT ', [' + a.name + ']'
FROM dbo.Attendance t
JOIN dbo.AttendanceOption a ON a.id = t.Attendance
FOR XML PATH(''), TYPE).value('.', 'VARCHAR(MAX)'), 1, 2, '')
DECLARE @ColumnsNULLs NVARCHAR(MAX)
SELECT @ColumnsNULLs = STUFF((
SELECT DISTINCT ', [' + a.name + '] = ISNULL([' + a.name + '], 0)'
FROM dbo.Attendance t
JOIN dbo.AttendanceOption a ON a.id = t.Attendance
FOR XML PATH(''), TYPE).value('.', 'VARCHAR(MAX)'), 1, 2, '')
DECLARE @SQL NVARCHAR(MAX)
SELECT @SQL = '
SELECT AttendanceDate, ' + @ColumnsNULLs + ', MarkedBy
FROM (
SELECT AttendanceDate
, attendanceCount = COUNT(attendance)
, AttendanceStatus = AttOPt.name
, MarkedBy = emp.name
FROM Attendance
LEFT JOIN AttendanceOption AttOPt ON AttOPt.id = Attendance
LEFT JOIN Employee emp ON MarkedBy = emp.id
GROUP BY
AttendanceDate
, Attendance
, AttOPt.name
, emp.name
) t
PIVOT
(
SUM(attendanceCount)
FOR AttendanceStatus IN (' + @Columns + ')
) p
ORDER BY AttendanceDate DESC'
PRINT @SQL
EXEC sys.sp_executesql @SQL
更新2:
-- variant #1
SELECT
AttendanceDate
, MarkedBy
, [Present] = ISNULL([Present], 0)
, [Absent] = ISNULL([Absent], 0)
, [Half Day] = ISNULL([Half Day], 0)
, [WithoutNotification] = ISNULL([WithoutNotification], 0)
FROM (
...
) t
PIVOT
(
...
) p
-- variant #2
SELECT *
FROM (
SELECT
AttendanceDate
, attendanceCount = COUNT(attendance)
, AttendanceStatus = AttOPt.name
, MarkedBy = emp.name
FROM Attendance
JOIN AttendanceOption AttOPt ON AttOPt.id = Attendance
JOIN Employee emp ON MarkedBy = emp.id
GROUP BY ALL
AttendanceDate
, Attendance
, AttOPt.name
, emp.name
) t
PIVOT
(
...
) p
DECLARE @Columns NVARCHAR(MAX)
SELECT @Columns = STUFF((
SELECT DISTINCT ', [' + a.name + ']'
FROM dbo.Attendance t
JOIN dbo.AttendanceOption a ON a.id = t.Attendance
FOR XML PATH(''), TYPE).value('.', 'VARCHAR(MAX)'), 1, 2, '')
DECLARE @ColumnsNULLs NVARCHAR(MAX)
SELECT @ColumnsNULLs = STUFF((
SELECT DISTINCT ', [' + a.name + '] = ISNULL([' + a.name + '], 0)'
FROM dbo.Attendance t
JOIN dbo.AttendanceOption a ON a.id = t.Attendance
FOR XML PATH(''), TYPE).value('.', 'VARCHAR(MAX)'), 1, 2, '')
DECLARE @SQL NVARCHAR(MAX)
SELECT @SQL = '
SELECT AttendanceDate, ' + @ColumnsNULLs + ', MarkedBy
FROM (
SELECT AttendanceDate
, attendanceCount = COUNT(attendance)
, AttendanceStatus = AttOPt.name
, MarkedBy = emp.name
FROM Attendance
LEFT JOIN AttendanceOption AttOPt ON AttOPt.id = Attendance
LEFT JOIN Employee emp ON MarkedBy = emp.id
GROUP BY
AttendanceDate
, Attendance
, AttOPt.name
, emp.name
) t
PIVOT
(
SUM(attendanceCount)
FOR AttendanceStatus IN (' + @Columns + ')
) p
ORDER BY AttendanceDate DESC'
PRINT @SQL
EXEC sys.sp_executesql @SQL
输出-
AttendanceDate Absent Half Day Present Without Notification MarkedBy
----------------------- ----------- ----------- ----------- -------------------- ---------------
2013-08-30 00:00:00.000 3 2 4 2 Anuj Kaundal
2013-08-14 00:00:00.000 0 0 11 0 Anuj Kaundal
参考:很好的解决方案,只剩下一点小东西,如何用0替换空值,目前没有。。专栏还有一个问题:我们可以让[出席]、[缺席]、[半天]、[不通知]这些专栏动态吗?最后一个问题:如何使用Order by?您在排序方面有任何问题吗?我需要按AttendanceDate描述分组