MySQL中, 如何查询某一天, 某一月, 某一年的数据

今天

select * from 表名 where to_days(时间字段名) = to_days(now());

昨天(包括昨天和今天的数据)

SELECT * FROM 表名 WHERE TO_DAYS( NOW( ) ) - TO_DAYS( 时间字段名) <= 1

昨天(只包括昨天)

SELECT * FROM 表名 WHERE DATEDIFF(字段,NOW())=-1;
-- 同理，查询前天的就是-2

近7天

SELECT * FROM 表名 where DATE_SUB(CURDATE(), INTERVAL 7 DAY) <= date(时间字段名)

近30天

SELECT * FROM 表名 where DATE_SUB(CURDATE(), INTERVAL 30 DAY) <= date(时间字段名)

本月

SELECT * FROM 表名 WHERE DATE_FORMAT( 时间字段名, '%Y%m' ) = DATE_FORMAT( CURDATE( ) , '%Y%m' )

上一月

SELECT * FROM 表名 WHERE PERIOD_DIFF( date_format( now( ) , '%Y%m' ) , date_format( 时间字段名, '%Y%m' ) ) =1

查询本季度数据

select * from `ht_invoice_information` where QUARTER(create_date)=QUARTER(now());

查询上季度数据

select * from `ht_invoice_information` where QUARTER(create_date)=QUARTER(DATE_SUB(now(),interval 1 QUARTER));

查询本年数据

select * from `ht_invoice_information` where YEAR(create_date)=YEAR(NOW());

查询上年数据

select * from `ht_invoice_information` where year(create_date)=year(date_sub(now(),interval 1 year));

查询当前这周的数据

SELECT name,submittime FROM enterprise WHERE YEARWEEK(date_format(submittime,'%Y-%m-%d')) = YEARWEEK(now());

查询上周的数据

SELECT name,submittime FROM enterprise WHERE YEARWEEK(date_format(submittime,'%Y-%m-%d')) = YEARWEEK(now())-1;

查询上个月的数据

select name,submittime from enterprise where date_format(submittime,'%Y-%m')=date_format(DATE_SUB(curdate(), INTERVAL 1 MONTH),'%Y-%m')

select * from user where DATE_FORMAT(pudate,'%Y%m') = DATE_FORMAT(CURDATE(),'%Y%m') ; 

select * from user where WEEKOFYEAR(FROM_UNIXTIME(pudate,'%y-%m-%d')) = WEEKOFYEAR(now()) 

select * from user where MONTH(FROM_UNIXTIME(pudate,'%y-%m-%d')) = MONTH(now()) 

select * from user where YEAR(FROM_UNIXTIME(pudate,'%y-%m-%d')) = YEAR(now()) and MONTH(FROM_UNIXTIME(pudate,'%y-%m-%d')) = MONTH(now()) 

select * from user where pudate between  上月最后一天  and 下月第一天 

查询当前月份的数据

select name,submittime from enterprise   where date_format(submittime,'%Y-%m')=date_format(now(),'%Y-%m')
select * from dividend where date_format(createtime,'%Y')='2019'

查询距离当前现在6个月的数据

select name,submittime from enterprise where submittime between date_sub(now(),interval 6 month) and now();

多表查询

sql = "select * from dividend de left join admin ad ON ad.ad_id=de.uid where ad.type=? and de.createtime=? and ad.level=3";

插入

            PreparedStatement psql0;
 		    psql0 = con.prepareStatement("insert into detail(senduid,acceptuid,money,type,details,status,createtime) values(?,?,?,?,?,?,?)");
 		    psql0.setInt(1, 100000);
 		    psql0.setInt(2,uid);
 		    psql0.setDouble(3,allsingledividend*(1-rate));
 		    psql0.setString(4,"分红"); 
 		    psql0.setString(5,"省内单品分红："+uid+"分红"+allsingledividend+",扣税"+allsingledividend*rate+",实际获得"+allsingledividend*(1-rate));
 		    psql0.setString(6,"分红成功");
 		    psql0.setString(7,DateUtil.getCurrentDateTimeStr());
 		    psql0.executeUpdate();
 		    psql0.close();

修改

            PreparedStatement psql1; 
 			psql1 = con.prepareStatement("update dividend set allsingledividend=? where createtime=?");
 			psql1.setString(1,"已发");
 			psql1.setString(2, currentTime);
 			psql1.executeUpdate();
 			psql1.close();

参考：https://www.cnblogs.com/azhqiang/p/6702950.html