SQL Server: Datetime,Datetime2

select convert(nvarchar(50), '2018-10-10 10:13:32.000', 126) 
select convert(nvarchar(max), '2018-10-10 10:13:32.999',126)


-- 考试记录（员工答题答案，项目id,题目id，员工id，原答案,要顯示測驗日期時間、答案(只有英文字母都 還有同事姓名及分行
if exists (select * from sysobjects where id = object_id(n'[dbo].vipexamanswerrecord') and objectproperty(id, n'isusertable') = 1) 
drop table vipexamanswerrecord 
go
create table vipexamanswerrecord
(
answerrecordid int identity(1,1) primary key,
answerexamprojectid int not null,	--项目id
answerbranchstaffid int not null,	--员工id
answerexamquestionsid int not null,	--问题id
answeraskanswer nvarchar(100) null, -- 考試者選的答案
answerquestionsanswer nvarchar(100) not null, -- 原题正确答案
answerisok bit default(0), -- 1正确，0不正确
answerrecorddate datetime2 default(getdate())	--添加时间

)
go
-- datetime	2007-05-08 12:35:29.123
-- datetime2	2007-05-08 12:35:29. 1234567


declare @d1 datetime ,@d2 datetime2
set @d1=getdate()
set @d2=getdate()
select @d1,@d2
go


select getdate();
go

select convert(varchar(28), getdate(), 126)

if exists (select * from sysobjects where [name] = 'proc_select_vipexamanswerstaffdatesearch')
drop procedure proc_select_vipexamanswerstaffdatesearch
go
create procedure proc_select_vipexamanswerstaffdatesearch
(
	
	@answerbranchstaffid int,
	@answerexamprojectid int,	
	@statdatetime datetime,  -- 秒后小数只有3位  datetime2 秒后小数有7位,根据数据库的设定类型，在程序中也要考虑其一致，否则有查询上就有误差 geovin du  涂聚文提示
	@enddatetime datetime -- 秒后小数只有3位
)
as
   declare @where nvarchar(500),@sql nvarchar(800)	
    set @sql='select [branchstaffname],[branchstaffno],[branchstaffcode],branchname,[examquestionstitle],examprojecttitle,[answeraskanswer],[answerquestionsanswer],[answerisok],[answerrecorddate] from view_vipexamanswerrecordhk where [answerrecorddate]>='''+convert(nvarchar(50),@statdatetime,126)+''' and [answerrecorddate]<='''+convert(nvarchar(50),@enddatetime,126)+''''
    set @where=''
	set @where=@where+' and answerbranchstaffid='+cast(@answerbranchstaffid as varchar)+' and answerexamprojectid='+cast(@answerexamprojectid as varchar)

set @sql=@sql+@where+' order by answerrecorddate desc'
print(@sql)
exec(@sql)
go

exec proc_select_vipexamanswerstaffdatesearch 2631,1,'2018-10-10 10:13:32.000','2018-10-10 10:21:43.999'
go

select convert(nvarchar(50), '2018-10-10 10:13:32.000', 126) 
select convert(nvarchar(max), '2018-10-10 10:13:32.999',126)

　

convert.todatetime(eval("examrecordendtime")).tostring("yyyy-mm-dd hh:mm:ss.fff