oracle 中的trunc()函数及加一个月,一天,一小时,一分钟,一秒钟方法
返回处理后的数据,不同于round()(对数值进行四舍五入处理),该函数不对指定小数前或后的数值部分进行舍入处理。
语法:trunc(number[,decimals])
其中,number为待做处理的数值,decimals为需要保留小数点后面的位数,即精度,默认值为0,此时将截去所有的小数部分。
数值处理:
select trunc(123.45) as a,trunc(123.456,2) as b, trunc(123.45,-1) as c from dual ;
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从以上例子可以看出,第二个参数可为负值,表示为截取小数点左边指定位数后面的部分,即皆为0位,与为整数相似,为1时取十分位,为-1则取到十位,以此类推。当然有一种情况是这样的:trunc(123.45,-5),可以测返回:
select trunc(123.4,-5) from dual;
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日期处理:此时函数返回指定元素格式截去一部分日期值。
语法:trunc(date[,fmt])
Date 为必要参数,是输入的一个日期。Fmt参数可以忽略,是日期格式,用以指定的元素格式来截去输入的日期值,默认为0,此时截去最近的日期。
用法及举例可参考如下:
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" 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附:
在当前日期加一个月,加一天,加一小时,加一分钟,加一秒的方法:
oracle中有一个add_mouth()函数,可直接加月份:
select sysdate,add_months(sysdate ,1) from dual;
aaarticlea/png;base64,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" alt="" />
加一天,加一小时,加一分钟,加一秒:
select
sysdate +1 加一天 ,
sysdate+1/24 加1小时,
sysdate+1/(24*60) as 加1分钟,
sysdate+1/(24*60*60) as 加1秒钟
from dual
aaarticlea/png;base64,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" alt="" />
---------
本系列为最近一段时间学习oracle的学习笔记,记录于此作为自身回顾,其中有的来的网络,有的来的书籍,但时间已久,记不清哪些是引用,如是转载但没标注出,特意致歉。
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