SQL Server:子查询到Join语句
我正试图查询我的数据库,以了解每个用户在过去3天内所做的记录(例如电话)的数量 我正在尝试实现以下查询输出:SQL Server:子查询到Join语句,sql,sql-server,Sql,Sql Server,我正试图查询我的数据库,以了解每个用户在过去3天内所做的记录(例如电话)的数量 我正在尝试实现以下查询输出: username 10-11-2014 11-11-2014 12-11-2014 user1 24 25 20 user2 23 20 30 我可以使用下面的查询来执行此操作,但对我来说,这似乎是一个非常冗长的方法,我认为我可以使用连接来执行此操作,但我不知道 S
username 10-11-2014 11-11-2014 12-11-2014
user1 24 25 20
user2 23 20 30
我可以使用下面的查询来执行此操作,但对我来说,这似乎是一个非常冗长的方法,我认为我可以使用连接来执行此操作,但我不知道
SELECT username,
(SELECT count(tblCall.call_id)
FROM tblCall
WHERE tblCall.started_at BETWEEN '2014-11-10 00:00:00' AND
'2014-11-10 23:00:00' AND
tblCall.from_user_id = tblUser.user_id) AS '10-11-2014',
(SELECT count(tblCall.call_id)
FROM tblCall
WHERE tblCall.started_at BETWEEN '2014-11-11 00:00:00' AND
'2014-11-11 23:00:00' AND
tblCall.from_user_id = tblUser.user_id) AS '11-11-2014',
(SELECT count(tblCall.call_id)
FROM tblCall
WHERE tblCall.started_at BETWEEN '2014-11-12 00:00:00' AND
'2014-11-12 23:00:00' AND
tblCall.from_user_id = tblUser.user_id) AS '12-11-2014'
FROM tblUser
WHERE tblUser.can_manage_accounts = '1' AND
tblUser.telephone_ext != '' AND
tblUser.blocked = '0'
GROUP BY tblUser.user_id, tblUser.username
我希望能够指定查询调用的日期范围,并将它们返回到每天的新列中。这可能吗
谢谢 试试这个
SELECT username
,count(CASE WHEN tblCall.started_at BETWEEN '2014-11-10 00:00:00' AND '2014-11-10 23:00:00' THEN tblCall.call_id ELSE NULL END) AS [10-11-2014]
,count(CASE WHEN tblCall.started_at BETWEEN '2014-11-11 00:00:00' AND '2014-11-11 23:00:00' THEN tblCall.call_id ELSE NULL END) AS [11-11-2014]
,count(CASE WHEN tblCall.started_at BETWEEN '2014-11-12 00:00:00' AND '2014-11-12 23:00:00' THEN tblCall.call_id ELSE NULL END) AS [12-11-2014]
FROM tblUser
INNER JOIN tblCall ON tblCall.from_user_id = tblUser.[user_id]
WHERE tblUser.can_manage_accounts = '1'
AND tblUser.telephone_ext != ''
AND tblUser.blocked = '0'
GROUP BY tblUser.username
动态Sql
查询
您需要使用
动态Sql
DECLARE @cols VARCHAR(max)='',
@sql NVARCHAR(max),
@start_date DATETIME='2009-08-25 00:00:00',--start date
@end_date DATETIME='2009-09-02 00:00:00'--end date
SELECT @cols += ',[' + CONVERT(VARCHAR(30), started_at, 102)+ ']'
FROM (SELECT DISTINCT CONVERT(DATE, started_at) started_at
FROM #tblCall
WHERE started_at BETWEEN @start_date AND @end_date) A
SELECT @cols = RIGHT(@cols, Len(@cols) - 1)
SET @sql='SELECT *
FROM (SELECT Count(call_id) cnt,
CONVERT(DATE, started_at) started_at,
userid
FROM #tblCall where started_at between '''+ CONVERT(VARCHAR(30), @start_date, 102)+ ''' and '''
+ CONVERT(VARCHAR(30), @end_date, 102)
+ ''' GROUP BY userid,
CONVERT(DATE, started_at)) A
PIVOT (Max(cnt)
FOR started_at IN (' + @cols + ')) piv'
EXEC Sp_executesql @sql
您可能希望使用数据过滤器查看它在
23:00
和00:00
之间,它不应该是23:59
?您最好只取日期时间的日期部分进行比较。23:59
还将省略23:59:00.001
和23:59:59.999
@Tanner之间的任何值,您能提供一个例子吗?这并不能回答问题!!,日期范围将根据它应该工作的日期范围传递。您不能硬编码日期。@这是否足够有用?
DECLARE @Range_Start DATE = '2014-11-11'
DECLARE @Range_End DATE = '2014-11-13'
DECLARE @Date_Columns NVARCHAR(MAX);
DECLARE @Sql NVARCHAR(MAX);
SELECT @Date_Columns = STUFF(( SELECT DISTINCT ', ' + QUOTENAME(CONVERT(VARCHAR(10), started_at, 120))
FROM TEST_TABLE
WHERE CAST(started_at AS DATE) >= @Range_Start
AND CAST(started_at AS DATE) <= @Range_End
FOR XML PATH(''),TYPE).value('.','NVARCHAR(MAX)'),1,2,'')
SET @Sql = N' SELECT *
FROM (
SELECT UserName, COUNT(*) AS Total, CONVERT(VARCHAR(10), started_at, 120) AS started_at
FROM TEST_TABLE
WHERE CAST(started_at AS DATE) >= @Range_Start
AND CAST(started_at AS DATE) <= @Range_End
GROUP BY UserName, CONVERT(VARCHAR(10), started_at, 120)
) t
PIVOT ( SUM(Total)
FOR started_at
IN (' + @Date_Columns + ')
)p '
Execute sp_executesql @Sql
,N'@Range_Start DATE, @Range_End DATE'
,@Range_Start
,@Range_End
╔══════════╦════════════╦════════════╦════════════╗
║ UserName ║ 2014-11-11 ║ 2014-11-12 ║ 2014-11-13 ║
╠══════════╬════════════╬════════════╬════════════╣
║ Holly ║ NULL ║ 2 ║ NULL ║
║ James ║ 2 ║ NULL ║ NULL ║
║ Jane ║ NULL ║ NULL ║ 2 ║
║ John ║ 2 ║ NULL ║ NULL ║
║ Mandy ║ NULL ║ 1 ║ NULL ║
║ Mark ║ NULL ║ NULL ║ 2 ║
║ Sally ║ NULL ║ 2 ║ NULL ║
║ Sam ║ NULL ║ NULL ║ 2 ║
╚══════════╩════════════╩════════════╩════════════╝
DECLARE @cols VARCHAR(max)='',
@sql NVARCHAR(max),
@start_date DATETIME='2009-08-25 00:00:00',--start date
@end_date DATETIME='2009-09-02 00:00:00'--end date
SELECT @cols += ',[' + CONVERT(VARCHAR(30), started_at, 102)+ ']'
FROM (SELECT DISTINCT CONVERT(DATE, started_at) started_at
FROM #tblCall
WHERE started_at BETWEEN @start_date AND @end_date) A
SELECT @cols = RIGHT(@cols, Len(@cols) - 1)
SET @sql='SELECT *
FROM (SELECT Count(call_id) cnt,
CONVERT(DATE, started_at) started_at,
userid
FROM #tblCall where started_at between '''+ CONVERT(VARCHAR(30), @start_date, 102)+ ''' and '''
+ CONVERT(VARCHAR(30), @end_date, 102)
+ ''' GROUP BY userid,
CONVERT(DATE, started_at)) A
PIVOT (Max(cnt)
FOR started_at IN (' + @cols + ')) piv'
EXEC Sp_executesql @sql