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–查询某年的数据
select * from table where YEAR(createTime) = 2018;
–查询某月的数据 将数据库中的时间字段格式改为字符串格式。
select * from combine where CONVERT(varchar(7),create_time, 120 ) = ‘2018-05’
或者
select * from combine where YEAR(create_time)=2018 and month(create_time)=5;
sqlserver
查询昨天的数据
select * from table where datediff(day, 时间字段,getdate()) = 1
查询今天的数据
SELECT * FROM checkinfo where DATEDIFF(day,时间字段,GETDATE())=0;
查询昨天的数据
SELECT * FROM checkinfo where DATEDIFF(day,时间字段,GETDATE())=1;
查询本周的数据
SELECT * FROM checkinfo where datediff(week,c_sample_date,getdate())=0;
查询上周的数据
select * from checkinfo where datediff(week, 时间字段 ,getdate()) = 1;
查询下周的数据
select * from checkinfo where datediff(week, 时间字段 ,getdate()) = -1;
查询上月的数据
select * From checkinfo Where DateDiff(month, 时间字段, GetDate()) = 1;
查询本月的数据
select * From checkinfo Where DateDiff(month, 时间字段, GetDate()) = 0;
查询下月的数据
Select * From checkinfo Where DateDiff(month,时间字段,GetDate()) = -1;
查询最近七天的数据
Select * From checkinfo Where DateDiff(dd, 时间字段, GetDate()) <= 7
查询今年的数据
Select * From checkinfo Where DateDiff(year, GetDate(), c_sample_date ) = 0
mysql
查询今天的数据
select * from table where to_days(时间字段) = to_days(now());
查询本周的数据
SELECT * FROM table WHERE YEARWEEK( date_format(时间字段名,'%Y-%m-%d' ) ) = YEARWEEK( now() ) ;
查询本月的数据
SELECT * FROM table WHERE DATE_FORMAT( 时间字段名, '%Y%m' ) = DATE_FORMAT( CURDATE( ) , '%Y%m' );
或
select * from table where date_format( 时间字段名,'%Y-%m')=date_format(now(),'%Y-%m');
–查询本年数据
select * from table where YEAR(时间字段名)=YEAR(NOW());