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DateDiff在Access与Sql server中的差别

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2016-06-07 15:43:151529browse

语法 DateDiff(interval, date1, date2 [ , firstdayofweek ] [ , firstweekofyear ] ) 差别在于interval是否要用引号; Access:DateDiff('n',lastActiveTime,'" + DateTime.Now + "')=10 Sql server: DateDiff(n,lastActiveTime,'" + DateTime.Now + "')=10

语法

DateDiff(interval, date1, date2 [, firstdayofweek] [, firstweekofyear] )

 

差别在于interval是否要用引号;

Access:DateDiff('n',lastActiveTime,'" + DateTime.Now + "')>=10

Sql server:DateDiff(n,lastActiveTime,'" + DateTime.Now + "')>=10

interval 参数 (参数:为操作、事件、方法、属性、函数或过程提供信息的值。)包含以下设置:

设置 说明
yyyy
q 季度
m
y 某年的某一天
d
w 工作日
ww
h
n
s

 

参数 
Year
yyyy

Quarter
q

Month
m

Day of year
y

Day
d

Weekday
w

Week
ww

Hour
h

Minute
n

Second
s

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