Examples The following example truncates a date: SELECT TRUNC(TO_DATE('27-OCT-92','DD-MON-YY'), 'YEAR') "New Year" FROM DUAL; New Year --------- 01-JAN-92 Formatting Dates using TRUNC: Examples In the following
trunc() 截取日期或者数字 参考链接:https://www.cnblogs.com/xiaoyudz/archive/2011/03/18/1988467.html 官方注释: Syntax TRUNC(date [, fmt ]) Purpose The TRUNC (date) function returns date with the time portion of the day truncated to the unit specified by the format model fmt. The value ...
Summary: In this tutorial, you’ll learn how to use the Oracle TRUNC function to truncate date to a specific unit. Introduction to Oracle TRUNC function# The OracleTRUNC()function returns aDATEvalue truncated to a specific component (e.g., day, month, year), and zeroing out smaller componen...
TRUNC(TO_DATE(’24-Nov-1999 08:37 pm’,’dd-mon-yyyy hh:mi am’,’hh’)) =’24-Nov-1999 08:00:00 am’ round (date,''format'')未指定format时,如果日期中的时间在中午之前,则将日期中的时间截断为12 A.M.(午夜,一天的开始),否则进到第二天。 TRUNC(date,''format'')未指定format时,...
Oracle TRUNC (date) function: The TRUNC (date) function returns the date with the time portion of the day truncated to a specific unit of measure. This tutorial explains how to use the TRUNC (date) function with syntax, parameters, examples and explanat
在Sqlite中,等效于Oracle查询trunc(date)的函数是date(date, 'start of day')。这个函数将给定的日期参数截断为当天的起始时间,即将时间部分设置为00:00:00。这在需要比较日期而忽略时间部分的情况下非常有用。 在Sqlite中,可以使用以下方式来实现等效的Oracle查询trunc(date): ...
:子句中: date_column=trunc(sysdate)结果不同于trunc(date_column)=trunc(sydate)EN我使用Oracle SQL...
TRUNC(date)returns the value ofdatetruncated to the nearest date in the unit specified byfmt. In addition, the return value must be earlier than the value ofdate. Notice The difference between the return values of this function andROUND()is thatTRUNC(date)returns the nearest date that must ...
DATE | WEEK | MONTH | QUARTER | YEAR For example, given a DateTime property “TimeStamp” with a value representing 10/13/2009 11:35:12.000, the TRUNC operator could be used to compute the following results (represented in pretty-printed form for clarity; actual results would use standard ...
Oracle date 和 timestamp 区别详解 1.DATE数据类型 这个数据类型我们实在是太熟悉了,当我们需要表示日期和时间的话都会想到date类型。它可以存储月,年,日,世纪,时,分和秒。它典型地用来表示什么时候事情已经发生或将要发生。 DATE数据类型的问题在于它表示两个事件发生时间间隔的度量粒度是秒。这个问题将在稍后讨论...