last day of the current month?

i have to get开发者_运维问答 the last day of the current month. how can i get

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SQLite (sqlite3)

Compute the last day of the current month.

SELECT date('now','start of month','+1 month','-1 day'); 

checkout this link as well if your using sqlite3 sqlite datetime functions

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set dateformat dmy

select dateadd(d, -1, dateadd(m, 1, '01-' + convert(varchar, month(getdate())) + '-' + convert(varchar, year(getdate()))))

add one month to the first of this month, minus one day.

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SQLITE QUERY FOR CALCULATE NUMBER OF DAY IN A CURRENT MONTH

select strftime('%d',datetime('now','start of month','+1 month','-1 second'));

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An alternative: add a month to the date, then subtract the resulting day value of the new month:

select day(dateAdd(d, -day(dateAdd(m,1,'2012-01-31')), dateAdd(m, 1, '2012-01-31')))

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Oracle

SELECT LAST_DAY(SYSDATE) AS Last_day_of_month FROM DUAL;

SQL Server

SELECT DATEADD(s,-1,DATEADD(mm, DATEDIFF(m,0,GETDATE())+1,0)) AS Last_day_of_month