如何获得本月的开始和结束日期

Question

How to get start date and end dates in a query from database.

Thanks,

Lico

Answer 1

http://sqltutorials.blogspot.com/2007/06/sql-first-and-last-day-of-month.html

Only thing that isn't covered is how to retrieve the current date... see rexem's post.

Answer 2

CURRENT_DATE[()] | CURDATE() | SYSDATE | TODAY = returns current date

Start of month:

DATE EXTRACT(YEAR FROM SYSDATE) +'-'+ EXTRACT(MONTH FROM SYSDATE) +'-01'

Answer 3

For completeness, start of month:

DATE EXTRACT(YEAR FROM SYSDATE) +'-'+ EXTRACT(MONTH FROM SYSDATE) +'-01' 

End of month:

DATEADD('DAY', -1, DATEADD('MONTH', 1, DATE EXTRACT(YEAR FROM SYSDATE) +'-'+ EXTRACT(MONTH FROM SYSDATE) +'-01'))