1. -- 查询30天
    2. select DATE_SUB(CURDATE(), INTERVAL 30 DAY) frm table;
    5. 今天
    7. select * from 表名 where to_days(时间字段名) = to_days(now());
    9. 昨天
    11. SELECT * FROM 表名 WHERE TO_DAYS( NOW( ) ) - TO_DAYS( 时间字段名) <= 1
    13. 7天
    15. SELECT * FROM 表名 where DATE_SUB(CURDATE(), INTERVAL 7 DAY) <= date(时间字段名)
    17. 近30天
    19. SELECT * FROM 表名 where DATE_SUB(CURDATE(), INTERVAL 30 DAY) <= date(时间字段名)
    21. 本月
    23. SELECT * FROM 表名 WHERE DATE_FORMAT( 时间字段名, '%Y%m' ) = DATE_FORMAT( CURDATE( ) , '%Y%m' )
    25. 上一月
    27. SELECT * FROM 表名 WHERE PERIOD_DIFF( date_format( now( ) , '%Y%m' ) , date_format( 时间字段名, '%Y%m' ) ) =1
    31. #查询本季度数据
    32. select * from `ht_invoice_information` where QUARTER(create_date)=QUARTER(now());
    33. #查询上季度数据
    34. select * from `ht_invoice_information` where QUARTER(create_date)=QUARTER(DATE_SUB(now(),interval 1 QUARTER));
    35. #查询本年数据
    36. select * from `ht_invoice_information` where YEAR(create_date)=YEAR(NOW());
    37. #查询上年数据
    38. select * from `ht_invoice_information` where year(create_date)=year(date_sub(now(),interval 1 year));
    42. 查询当前这周的数据 
    43. SELECT name,submittime FROM enterprise WHERE YEARWEEK(date_format(submittime,'%Y-%m-%d')) = YEARWEEK(now());
    45. 查询上周的数据
    46. SELECT name,submittime FROM enterprise WHERE YEARWEEK(date_format(submittime,'%Y-%m-%d')) = YEARWEEK(now())-1;
    48. 查询当前月份的数据
    49. select name,submittime from enterprise   where date_format(submittime,'%Y-%m')=date_format(now(),'%Y-%m')
    51. 查询距离当前现在6个月的数据
    52. select name,submittime from enterprise where submittime between date_sub(now(),interval 6 month) and now();
    54. 查询上个月的数据
    55. select name,submittime from enterprise   where date_format(submittime,'%Y-%m')=date_format(DATE_SUB(curdate(), INTERVAL 1 MONTH),'%Y-%m')
    57. select * from ` user ` where DATE_FORMAT(pudate, ' %Y%m ' ) = DATE_FORMAT(CURDATE(), ' %Y%m ' ) ;
    59. select * from user where WEEKOFYEAR(FROM_UNIXTIME(pudate,'%y-%m-%d')) = WEEKOFYEAR(now())
    61. select * 
    62. from user 
    63. where MONTH (FROM_UNIXTIME(pudate, ' %y-%m-%d ' )) = MONTH (now())
    65. select * 
    66. from [ user ] 
    67. where YEAR (FROM_UNIXTIME(pudate, ' %y-%m-%d ' )) = YEAR (now())
    68. and MONTH (FROM_UNIXTIME(pudate, ' %y-%m-%d ' )) = MONTH (now())
    70. select * 
    71. from [ user ] 
    72. where pudate between 上月最后一天
    73. and 下月第一天
    75. where   date(regdate)   =   curdate();
    77. select   *   from   test   where   year(regdate)=year(now())   and   month(regdate)=month(now())   and   day(regdate)=day(now())
    79. SELECT date( c_instime ) ,curdate( )
    80. FROM `t_score`
    81. WHERE 1
    82. LIMIT 0 , 30