具体sql如下: CREATEORREPLACEfunctionGetWeekNum(currentDateINdate,weekStandardINvarchar2)returnvarchar2asfirstDayWeekNo NUMBER;--本年1号周几(以日历为基础,周一为第一天)fisrtWeekDayCount NUMBER;--本年第一周天数(以weekNo为标准)dayCount NUMBER;--总天数weekCount NUMBER;--总周数beginif currentDateisnul...
createorreplacefunctionGet_weekday(pDatedate)returnnumberis vResult number; begin selectcaseto_char(pDate,'FmDay','nls_date_language=english') when'Monday'then 1 when'Tuesday'then 2 when'Wednesday'then 3 when'Thursday'then 4 when'Friday'then 5 when'Saturday'then 6 when'Sunday'then 7 endd...
1、使用TO_CHAR函数 TO_CHAR函数可以将日期转换为字符串,并指定格式,我们可以使用’D’作为格式代码,表示星期几,要计算2022年1月1日是星期几,可以使用以下SQL语句: SELECT TO_CHAR(TO_DATE('20220101', 'YYYYMMDD'), 'D') AS weekday FROM DUAL; 执行结果: weekday 5 从结果可以看出,2022年1月1日是星期...
Oracle从8i开始就提供了大量的日期函数,这些日期函数包括对日期进行加减、转换、截取等功能。下面是Oracle提供的日期函数一览表Function Use ADD_MONTHS Addsmonthstoadate LAST_DAY Computesthelastdayofthemonth MONTHS_BETWEEN Determinesthenumberofmonthsbetweentwodates NEW_TIME Translatesatimetoanewtimezone NE...
SQL>selectmonths_between(sysdate,to_date('2005-11-12','yyyy-mm-dd'))fromdual; MONTHS_BETWEEN(SYSDATE,TO_DATE('2005-11-12','YYYY-MM-DD')) --- -4.6966741 5。NEXT_DAY(d,day_of_week) 返回由"day_of_week"命名的,在变量"d"指定的日期之后的第一个工作日的日期。参数"day_of_week"...
AND last_day(to_date(ny,'yyyymm')) )q ) a WHERE a.weekday NOT IN(0,6); RETURN Result; END Get_WorkingDays; ___ 还有一个版本 CREATE OR REPLACE FUNCTION Get_WorkingDays( ny IN VARCHAR2 ) RETURN INTEGER IS /*--- 函数名称
具体sql如下:CREATE OR REPLACE function GetWeekNum(currentDate IN date,weekStandard IN varchar2) return varchar2 as firstDayWeekNo NUMBER; --本年1号周⼏(以⽇历为基础,周⼀为第⼀天)fisrtWeekDayCount NUMBER; --本年第⼀周天数(以weekNo为标准)dayCount NUMBER; --总天数 weekCount ...
去掉的是周六/7,周日/1两天周末 具体SQL如下、这是避免日期格式本地化的版本 select count(1) from ( select to_char(TO_DATE('2016-12-24','yyyy-MM-dd') - level, 'd') DOW from dualconnect by level <= trunc(TO_DATE('2016-12-24','yyyy-MM-dd') - TO_DATE('2016-11-...
5。NEXT_DAY(d, day_of_week) 返回由"day_of_week"命名的,在变量"d"指定的日期之后的第一个工作日的日期。参数"day_of_week"必须为该星期中的某一天。 SQL> SELECT next_day(to_date('20050620','YYYYMMDD'),1) FROM dual; NEXT_DAY(T
下面是Oracle开开提供的日期函数一表Function Use ADD_MONTHS Addsmonthstoadate LAST_DAY Computesthelastdayofthemonth MONTHS_BETWEEN Determinesthenumberofmonthsbetweentwodates NEW_TIME Translatesatimetoanewtimezone NEXT_DAY Returnsthedateofthenextspecifiedweekday ROUND Roundsadate/timevaluetoaspecifiedelement ...