[Sql Server][原创] 常用 Sql 查询

1、Convert DataTime 

select 1 as flag,Convert(nvarchar(100),getdate(),1) as dateflag union all
select 2 as flag,Convert(nvarchar(100),getdate(),2) as dateflag union all
select 3 as flag,Convert(nvarchar(100),getdate(),3) as dateflag union all
select 4 as flag,Convert(nvarchar(100),getdate(),4) as dateflag union all
select 5 as flag,Convert(nvarchar(100),getdate(),5) as dateflag union all
select 6 as flag,Convert(nvarchar(100),getdate(),6) as dateflag union all
select 7 as flag,Convert(nvarchar(100),getdate(),7) as dateflag union all
select 8 as flag,Convert(nvarchar(100),getdate(),8) as dateflag union all
select 9 as flag,Convert(nvarchar(100),getdate(),9) as dateflag union all
select 10 as flag,Convert(nvarchar(100),getdate(),10) as dateflag union all
select 11 as flag,Convert(nvarchar(100),getdate(),11) as dateflag union all
select 12 as flag,Convert(nvarchar(100),getdate(),12) as dateflag union all
select 13 as flag,Convert(nvarchar(100),getdate(),13) as dateflag union all
select 14 as flag,Convert(nvarchar(100),getdate(),14) as dateflag union all

select 20 as flag,Convert(nvarchar(100),getdate(),20) as dateflag union all
select 21 as flag,Convert(nvarchar(100),getdate(),21) as dateflag union all
select 22 as flag,Convert(nvarchar(100),getdate(),22) as dateflag union all
select 23 as flag,Convert(nvarchar(100),getdate(),23) as dateflag union all
select 24 as flag,Convert(nvarchar(100),getdate(),24) as dateflag union all
select 25 as flag,Convert(nvarchar(100),getdate(),25) as dateflag