mysql日期相关

DATE_ADD(date,expr,type)

定义和用法

函数向日期添加指定的时间间隔

语法

date 参数是合法的日期表达式。expr 参数是您希望添加的时间间隔。
type 参数可以常用下列值：

Type值
SECOND
MINUTE
HOUR
DAY
WEEK
MONTH
QUARTER
YEAR

TIMESTAMPDIFF(interval,datetime_expr1,datetime_expr2)

定义和用法

Mysql计算两个日期的时间差函数

其结果的单位由interval 参数给出,该参数必须是以下值的其中一个： FRAC_SECOND、SECOND、 MINUTE、 HOUR、 DAY、 WEEK、 MONTH、 QUARTER或 YEAR。

查询当天、本周，本月，上一个月的数据

• 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

• 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')

• 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();

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