函数last_day用于返回日期的最后一天。案例中查询当月的最后一天日期。根据中国俗话“一三五七八十腊”,当前六月应为30号。
SELECTLAST_DAY(SYSDATE)FROMdual;Code language:SQL (Structured Query Language)(sql) In this example, theSYSDATEfunction returns the current system date which is used as an input date for theLAST_DAY()function. B) Calculate the number of days left of the current month ...
Oracle/ Oracle Database/ Release 21 SQL Language Reference Share on LinkedInShare on XShare on FacebookShare on Email Syntax Description of the illustration last_day.eps Purpose LAST_DAYreturns the date of the last day of the month that containsdate. The last day of the month is defined by...
Oracle时间函数Oracle时间函数常用日期型函数1。Sysdate当前日期和时间SQLSelectsysdatefromdualSYSDATE21052。Lastday本月最后一天SQLSelectlastdaysysdatefromdualLASTDAYselectmonthsbetweendate02011999MMDDYYYYOracle时间函数Oracle时间函数常用日期型函数1。Sysdate当前日期和时间SQLSelectsysdatefromdualSYSDATE21052。Lastday本月最后...
A Introduction to the SQL for Oracle NoSQL Database Shellto_last_day_of_month function The to_last_day_of_month function returns the last day of the month for a given timestamp. Syntax: Copy TIMESTAMP to_last_day_of_month() Semantics: timestamp: The timestamp argument takes a TIME...
This Oracle tutorial explains how to use the Oracle / PLSQL LAST_VALUE function with syntax and examples. The Oracle / PLSQL LAST_VALUE function returns the last value in an ordered set of values from an analytic window.
在Oracle SQL 中,没有直接提供类似于 indexOf 和 lastIndexOf 的内置函数。但可以通过使用其他字符串函数和子查询来实现这两个功能。 实现indexOf 功能: 使用INSTR 函数获取字符串中第一次出现指定字符的位置。 使用CASE 语句将位置为 0 的情况转换为 NULL。 使用NVL 函数将 NULL 值转换为空字符串。 SELECT ...
The third variant in getting the last day of the month for the given input date simply simplifies the code by putting the step in getting the first day of the month into a separate function, called here as[dbo].[ufn_GetFirstDayOfMonth]. ...
This possible to do today, but it's a bit involved: presto> select date_add('day', -1, date_add('month', 1, date_trunc('month', date '2017-04-15'))); _col0 --- 2017-04-30 (1 row) Oracle and Hive both have a last_day function.
4. Query to get the First and Last Date of the Current Year in Oracle DatabaseSELECT TRUNC(SYSDATE, 'YYYY') AS first_date_of_year FROM dual;SELECT LAST_DAY(TO_DATE('31-12-' || TO_CHAR(SYSDATE, 'YYYY'), 'DD-MM-YYYY')) AS last_date_of_year FROM dual;These queries are used ...