-- 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

-- 七天
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 表名 where QUARTER(create_date)=QUARTER(now());

-- 查询上季度数据
select * from 表名 where QUARTER(create_date)=QUARTER(DATE_SUB(now(),interval 1
QUARTER));

-- 查询本年数据
select * from 表名 where YEAR(create_date)=YEAR(NOW());

-- 查询上年数据
select * from 表名 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();