year --- 2012 2. 获取当前日期中的月份 SQL> select extract(month from sysdate) as "month" from dual 2 / month --- 8 3. 获取当前日期中的日 SQL> select extract(day from date'2012-12-28') as "day" from dual 2 / day --- 28 分类: Oracle 0 0 « 上一篇: VI 编辑器保存...
Oracle的EXTRACT函数用于从日期/时间表达式中提取指定的部分,比如年、月、日、小时、分钟等。其基本语法如下: EXTRACT(unit FROM date_expression) 复制代码 其中,unit表示要提取的部分,可以是以下值之一: YEAR MONTH DAY HOUR MINUTE SECOND 例如,要从一个日期列中提取年份,可以这样使用EXTRACT函数: SELECT EXTRACT(Y...
YEAR MONTH DAY --- --- --- 2016 7 25 The time (hour, minute or second) components can be found by either: UsingCAST( datevalue AS TIMESTAMP )to convert theDATEto aTIMESTAMPand then usingEXTRACT( [ HOUR | MINUTE | SECOND ] FROM timestampvalue ); or UsingTO_CHAR( dat...
Filtering Records by Year or Month:Filter records based on a specific year or month in date-based fields. Performing Date Arithmetic:Use date components to perform arithmetic operations like finding records from a certain day or range. Extracting Data from INTERVAL Data Types:Extract specific parts ...
EXTRACT(time|timezone_hour_or_nimute|timezone_regn_or_abbrFROMdatetime_exp|interval_exp) パラメータ time YEAR、MONTH、DAY、HOUR、MINUTEまたはSECONDのいずれかのキーワードを使用して、ファンクションによって返される時刻要素を指定します。
Oracle 12c, Oracle 11g, Oracle 10g, Oracle 9i Example Let's look at some Oracle EXTRACT function examples and explore how to use the EXTRACT function in Oracle/PLSQL. For example: EXTRACT(YEAR FROM DATE '2003-08-22')Result:2003 EXTRACT(MONTH FROM DATE '2003-08-22')Result:8 EXTRACT(DAY...
Month No. of Orders --- --- 11 15 6 14 7 14 3 11 5 10 2 9 9 9 8 7 10 6 1 5 12 4 4 1 12 rows selected. 次の例では、1998年を戻します。 SELECT EXTRACT(YEAR FROM DATE '1998-03-07') FROM DUAL; EXTRACT(YEARFROM
In Oracle/PLSQL, the extract function extracts a value from a date or interval value. The syntax for the extract function is: EXTRACT ( { YEAR | MONTH | DAY | HOUR | MINUTE | SECOND } | { TIMEZONE_HOUR | TIMEZONE_MINUTE }
Note that theEXTRACT()function will returnUNKNOWNif the combination of field and source result in ambiguity. Return value TheEXTRACT()function returns the value of the field of the source. Examples A) Extracting fields from DATE values You can extract YEAR, MONTH, and DAY from a DATE value ...
select extract(minute from systimestamp) minute from dual; select extract(second from systimestamp) second from dual; 其中,获取year month day 时,可以使用date或timestamp类型的值;获取hour minut second时,必须使用timestamp类型的值。 下面参考:https://www.cnblogs.com/cxxjohnson/p/4824405.html ...