sql语句获取本周、上一周、本月数据
本周
select * from tb where datediff(week , 时间字段 ,getdate()) = 0
上周
select * from tb where datediff(week , 时间字段 ,getdate()) = 1
下周
select * from tb where datediff(week , 时间字段 ,getdate()) = -1
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--上月
Select * from TableName Where DateDiff(mm, DateTimCol, GetDate()) = 1
--本月
Select * from TableName Where DateDiff(mm, DateTimCol, GetDate()) = 0
--下月
Select * from TableName Where DateDiff(mm, GetDate(), DateTimCol ) = 1
昨天：dateadd(day,-1,getdate())
明天：dateadd(day,1,getdate())
上月：month(dateadd(month, -1, getdate()))
本月：month(getdate())
下月：month(dateadd(month, 1, getdate()))
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--昨天
Select * from TableName Where DateDiff(dd, DateTimCol, GetDate()) = 1
--明天
Select * from TableName Where DateDiff(dd, GetDate(), DateTimCol) = 1
--最近七天
Select * from TableName Where DateDiff(dd, DateTimCol, GetDate()) <= 7
--随后七天
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1、SQL数据库恢复模型
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1）完全恢复模型
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（1）备份时要备份数据库的数据文件和日志文件
（2）还原时使用数据库的备份的数据文件副本和全部日志信 ......
函数如下
CREATE FUNCTION StockBalance_AmountIn(@SortID int)
RETURNS numeric(18,4)
AS
BEGIN
Declare @dblReturn numeric(18,4)
Select @dblReturn = SUM(AmountCurrentMonthIn) from AT_Materiel_StockBalance Where SortID = @SortID
Return (@dblReturn)
END
......
sql日期转换参数
--日期转换参数,值得收藏
select CONVERT(varchar, getdate(), 120)
2004-09-12 11:06:08
select convert(varchar(10),getdate() ,120)
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2009-04-09
select replace(replace(replace(CONVERT(varchar, getdate(), 120 ),'-',''),' ',''),':','')
20040912110608
select CONVERT( ......
转自：http://www.sqlkey.cn/sql-yuju/sql_yuju.html
一、基础
1、说明：创建数据库
CREATE DATABASE database-name
2、说明：删除数据库
drop database dbname
3、说明：备份sql server
--- 创建 备份数据的 device
USE master
EXEC sp_addumpdevice 'disk', 'testBack', 'c:\mssql7backup\MyNwind_1.d ......
Database Level
- shrinkdb
- shrinkfile
SQL Server 2008
1) Right click database
2) Tasks
3) Shrink
4) Database or file
Table level
- compression
SQL Server 2008
1) Right click table
2) Storage
3) Manage Compression ......
