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SQL查询月、天、周、年(MySql的实例对比)
SQL Server实现
日期部分 | 缩写 |
year |
yy, yyyy |
quarter |
qq, q |
month |
mm, m |
dayofyear |
dy, y |
day |
dd, d |
week |
wk, ww |
weekday |
dw |
Hour |
hh |
minute |
mi, n |
second |
ss, s |
millisecond |
ms |
1 2/**//*计算今天是星期几*/ 3select datename(weekday,getdate()) 4 5/**//*查询本年的数据*/ 6select * from users where year(time)=year(getdate()) 7 8/**//*查询本月的数据,time是表users中代表时间的字段*/ 9select * from users where month(time)=month(getdate()) and year(time)=year(getdate()) 10 11/**//*查询今天的数据,time 是表中代表时间的字段*/ 12select * from users where day(time)=day(getdate()) and month(time)=month(getdate()) and year(time)=year(getdate()) 13 14 15/**//*计算那一天是星期一*/ 16SELECT DATEADD(wk, DATEDIFF(wk,0,getdate()), 0) 17 18/**//*计算那一天是周末*/ 19select dateadd(wk,datediff(wk,0,getdate()),6) 20 21/**//*查询本周的数据*/ 22select * from users where DATEPART(wk, time) = DATEPART(wk, GETDATE()) and DATEPART(yy, time) = DATEPART(yy, GETDATE()) 23 24 25/**//*查询本日的记录*/ 26select * from users where (DATEDIFF(dd, time, GETDATE()) = 0) 27 28