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  • mysql与时间有关的查询

    • date(str)函数可以返回str中形如"1997-05-26"格式的日期,str要是合法的日期的表达式,如2008-08-08 22:20:46
    • 时间是可以比较大小的,例如:
    # 14 两个时间要写成year-month-day形式,例"1997-05-26"
    select * from TASK where date(deadline) >' ' and  date(create_time)<' '
    # 16 [date]用year-month-day替换,month要两位,不够补0
    select * from TASK where date(deadline) between date_sub('[date]', INTERVAL 6 day) and '[date]'
    
    • 字符串转为日期STR_TO_DATE
    # 18 [date]严格按照"2015-03-06 12:00:00"这种格式替换
    update TASK set finish_time=STR_TO_DATE('[date]', '%Y-%m-%d %H:%i:%s') where task_id=' '
    
    • 日期的加减date_subdate_add
    # 16 [date]用year-month-day替换,month要两位,不够补0
    select * from TASK where date(deadline) between date_sub('[date]', INTERVAL 6 day) and '[date]'
    # 17 [date]用year-month-day替换,month要两位,不够补0
    select * from TASK where date(create_time) between date_sub('[date]', INTERVAL 6 day) and '[date]'
    # INTERVAL后面也可以跟month、year
    
    • 模糊查询%
    # 匹配含有[date]的字段
    select * from TASK where deadline like '%[date]%'
    
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  • 原文地址:https://www.cnblogs.com/l-h-x/p/9026518.html
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