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每个日期的SQL计数

tsql sql

The real napster · 技术社区 · 17 年前

我有以下需要

我有一个记录表,记录每天生成的som Lead。

假设该表如下所示:

tbl_leads
id int,
first_name nvarchar(100),
last_name nvarchar(100),
created_date datetime

因此,结果集应该如下所示:

counted_leads | count_date
5             | 2009-04-30
7             | 2009-04-29
5             | 2009-04-28
7             | 2009-04-27

... 等等

我当前的解决方案是使用c#中的foreach进行迭代,但我非常希望将其交给sql server,而不是sp。

7 回复 | 直到 17 年前

Tom H zenazn 17 年前

您可以使用:

Select
     count(created_date) as counted_leads,
     created_date as count_date
from
     table
group by
     created_date

Dave Swersky 17 年前

您创建的日期字段为 datetime

SELECT COUNT(created_date), created_date 
FROM table 
WHERE DATEDIFF(created_date, getdate()) < 10
GROUP BY convert(varchar, created_date, 101)

luviktor 14 年前

最有效的方法是按整数进行聚合,然后转换回datetime进行表示。

select 
    cast(daybucket - 1 as datetime) as count_date,
    counted_leads
from 
    (select 
         cast(created_date as int) as DayBucket,
         count(*) as counted_leads
     from mytable
     group by cast(created_date as int) ) as countByDay

user3411804 12 年前

Select
     count(created_date) as counted_leads,
     Convert(date,created_date) as count_date 
from table
group by Convert(date,created_date)

Pang Ajmal PraveeN 8 年前

cast(DATEADD(DAY, DATEDIFF(DAY, 0, created_date), 0) as int) as DayBucket

northpole 17 年前

Select count(created_date) total
     , created_dt
  from table
group by created_date
order by created_date desc

Suvabrata Roy 15 年前

CREATE PROCEDURE [dbo].[sp_Myforeach_Date]
    -- Add the parameters for the stored procedure here
    @SatrtDate as DateTime,
    @EndDate as dateTime,
    @DatePart as varchar(2),
    @OutPutFormat as int 
AS
BEGIN
    -- SET NOCOUNT ON added to prevent extra result sets from
    -- interfering with SELECT statements.
    Declare @DateList Table
    (Date varchar(50))

    WHILE @SatrtDate<= @EndDate
    BEGIN
    INSERT @DateList (Date) values(Convert(varchar,@SatrtDate,@OutPutFormat))
    IF Upper(@DatePart)='DD'
    SET @SatrtDate= DateAdd(dd,1,@SatrtDate)
    IF Upper(@DatePart)='MM'
    SET @SatrtDate= DateAdd(mm,1,@SatrtDate)
    IF Upper(@DatePart)='YY'
    SET @SatrtDate= DateAdd(yy,1,@SatrtDate)
    END 
    SELECT * FROM @DateList
END

只需输入此代码并以这种方式调用SP

exec sp_Myforeach_Date @SatrtDate='03 Jan 2010',@EndDate='03 Mar 2010',@DatePart='dd',@OutPutFormat=106

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