SQL查询月、天、周、年

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/**//*查询本月的记录*/
29select * from users where (DATEDIFF(mm, time, GETDATE()) = 0)
30
31/**//*查询本年的记录*/
32select * from users where (DATEDIFF(yy, time, GETDATE()) = 0)在MySql中实现:
 1  1——  
 2  本年:  
 3  select   *   from   loanInfo   where   year(date)=year(getdate())  
 4   
 5  2——  
 6  本月:  
 7  select   *   from   loanInfo   where   year(date)=year(getDate())   And   month(date)=month(getdate())  
 8   
 9  3——  
10  本日:  
11  select   *   from   loanInfo   where   year(date)=year(getDate())   And   month(date)=month(getdate())   and   Day(date)=Day(getDate()) 
12
13
14
15SELECT   *    FROM   table    WHERE   (MONTH(字段)   =   MONTH(GETDATE())) 
原文地址:https://www.cnblogs.com/ly5201314/p/1433189.html