如果你按了这个，并且真的不想尝试处理在代码中添加一天，那么让DB来做。

myDate >= '20090101 00:00:00' AND myDate < DATEADD(day,1,'20090101 00:00:00')

如果你确实包含了时间部分:确保它指向午夜。否则，你可以简单地省略时间:

myDate >= '20090101' AND myDate < DATEADD(day,1,'20090101')

不用担心。

之间(transact - sql) 指定要测试的(n)(包括)范围。

test_expression [ NOT ] BETWEEN begin_expression AND end_expression

Arguments test_expression Is the expression to test for in the range defined by begin_expression and end_expression. test_expression must be the same data type as both begin_expression and end_expression. NOT Specifies that the result of the predicate be negated. begin_expression Is any valid expression. begin_expression must be the same data type as both test_expression and end_expression. end_expression Is any valid expression. end_expression must be the same data type as both test_expression and begin_expression. AND Acts as a placeholder that indicates test_expression should be within the range indicated by begin_expression and end_expression. Remarks To specify an exclusive range, use the greater than (>) and less than operators (<). If any input to the BETWEEN or NOT BETWEEN predicate is NULL, the result is UNKNOWN. Result Value BETWEEN returns TRUE if the value of test_expression is greater than or equal to the value of begin_expression and less than or equal to the value of end_expression. NOT BETWEEN returns TRUE if the value of test_expression is less than the value of begin_expression or greater than the value of end_expression.

它确实包括界限。

declare @startDate date = cast('15-NOV-2016' as date) 
declare @endDate date = cast('30-NOV-2016' as date)
create table #test (c1 date)
insert into #test values(cast('15-NOV-2016' as date))
insert into #test values(cast('20-NOV-2016' as date))
insert into #test values(cast('30-NOV-2016' as date))
select * from #test where c1 between @startDate and @endDate
drop table #test
RESULT    c1
2016-11-15
2016-11-20
2016-11-30


declare @r1 int  = 10
declare @r2 int  = 15
create table #test1 (c1 int)
insert into #test1 values(10)
insert into #test1 values(15)
insert into #test1 values(11)
select * from #test1 where c1 between @r1 and @r2
drop table #test1
RESULT c1
10
11
15

SQL Server 2008的真实例子。

源数据:

ID    Start
1     2010-04-30 00:00:01.000
2     2010-04-02 00:00:00.000
3     2010-05-01 00:00:00.000
4     2010-07-31 00:00:00.000

查询:

SELECT
    *
FROM
    tbl
WHERE
    Start BETWEEN '2010-04-01 00:00:00' AND '2010-05-01 00:00:00'

结果:

ID    Start
1     2010-04-30 00:00:01.000
2     2010-04-02 00:00:00.000

如果列数据类型为datetime，则可以执行以下操作，从datetime中消除时间，只在日期范围之间进行比较。

where cast(getdate() as date) between cast(loginTime as date) and cast(logoutTime as date)

如果你按了这个，并且真的不想尝试处理在代码中添加一天，那么让DB来做。

myDate >= '20090101 00:00:00' AND myDate < DATEADD(day,1,'20090101 00:00:00')

如果你确实包含了时间部分:确保它指向午夜。否则，你可以简单地省略时间:

myDate >= '20090101' AND myDate < DATEADD(day,1,'20090101')

不用担心。