Archivos para ‘SQL Server’

2 enero 2012

How to select rows in a time interval in sql server

por auraham

Happy new year to all! This will be my first post for this year. Recently, I was looking for a way to select rows in
a time interval. After looking, I found this blog with a lot of examples and then, I ran to execute them in sqlcmd. Here are my tests, I hope these are useful.

Current time

select current_timestamp
go
-- output
2012-01-02 00:51:22.660

DATEADD
Returns a specified date with the number interval (signed integer) added to a specified datepart of that date.

DATEADD(datepart, number, date)

Some dateparts are year (yy, yyyy), month (m,mm), day (d,dd), hour (hh), minute (mi,n), second (ss,s), millisecond (ms), etc.

Get years

SELECT DATEADD(YEAR, -1, CURRENT_TIMESTAMP) AS previous_year,
DATEADD(YEAR,0,CURRENT_TIMESTAMP) AS present_year
DATEADD(YEAR,1,CURRENT_TIMESTAMP) AS next_year
GO

-- output
2011-01-02 01:10:24.733 -- previous year
2012-01-02 01:10:24.733 -- present year
2013-01-02 01:10:24.733 -- next year

More info:
Zen of SQL
Date and Time functions (Transact-SQL)

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