mysql数据库中的关于查询日期的一些操作如下：
--今天select * from 表名 where to_days(时间字段名) = to_days(now());--昨天SELECT * FROM 表名 WHERE TO_DAYS( NOW( ) ) - TO_DAYS( 时间字段名) <= 1--本周SELECT * FROM 表名 WHERE YEARWEEK( date_format( 时间字段名,'%Y-%m-%d' ) ) = YEARWEEK( now() ) ;--本月SELECT * FROM 表名 WHERE DATE_FORMAT( 时间字段名, '%Y%m' ) = DATE_FORMAT( CURDATE( ) ,'%Y%m' ) --上一个月SELECT * FROM 表名 WHERE PERIOD_DIFF(date_format(now(),'%Y%m'),date_format(时间字段名,'%Y%m') =1--本年SELECT * FROM 表名 WHERE YEAR( 时间字段名 ) = YEAR( NOW( ) ) --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;--查询当前月份的数据select name,submittime from enterprise where date_format(submittime,'%Y-%m')=date_format(now(),'%Y-%m')--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();--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where date(regdate) = curdate();select * from test where year(regdate)=year(now()) and month(regdate)=month(now()) and day(regdate)=day(now())SELECT date( c_instime ) ,curdate( )FROM `t_score`WHERE 1LIMIT 0 , 30