access与SqlServer 之时间与日期及其它SQL语句比较

access与SqlServer 之时间与日期及其它SQL语句比较

1、Datediff：

1.1算出日期差：
1.access:       datediff('d',fixdate,getdate())
2.sqlserver:    datediff(day,fixdate,getdate())
ACCESS实例：    select * from table where data=datediff('d',fixdate,getdate())
sqlserver实例： select * from table where data=datediff(day,fixdate,getdate())

1.2算出时间差：
1.access:       datediff('h',fixdate,getdate())
2.sqlserver:    datediff(Hour,'2004-12-10',getdate())
ACCESS实例：    select DATEDIFF('h',HMD,getdate())
sqlserver实例： select datediff(Hour,'2004-12-10',getdate())

1.3算出月份差：
1.access:       datediff('m',fixdate,getdate())
2.sqlserver:    datediff(Month,'2004-12-10',getdate())
ACCESS实例：    select DATEDIFF('m',HMD,getdate())
sqlserver实例： select datediff(Month,'2004-12-10',getdate())
----------------------------------------------------------------------------

2、日期变量
1.access:       #"&data&"#
2.sqlserver:    '"&data&"'
ACCESS实例：    select * from table where data=#"&data&"#
sqlserver实例： select * from table where data='"&data&"'
----------------------------------------------------------------------------

3、是否
1.access:       not finished
2.sqlserver:    finished=0
ACCESS实例：    select * from table where not finished
sqlserver实例： select * from table where finished=0
----------------------------------------------------------------------------

4、求余数

1.access:       a mod b＝100
2.sqlserver:    a % b ＝100
ACCESS实例：    select   a mod b＝100 from table where not finished
sqlserver实例： select a % b ＝100 from table where finished=0
----------------------------------------------------------------------------

5、获取当天日期
1.access:       now()
2.sqlserver:    getdate()
ACCESS实例：    select   now()
sqlserver实例： select getdate()