that the time in SQL Server is exactly 3 milliseconds. That's why I need to subtract 3 milliseconds to get the date and time I want.SELECT DateAdd (Ms,-3,dateadd (mm, DATEDIFF (Mm,0,getdate ()), 0))The time portion of the calculated date contains the time at which SQL Server can record the last moment of the day ("23:
By: Michael otey
From the September 2009 edition of SQL Server magazine
Dealing with date values is a core part of working with T-SQL, and SQL server has several built-in functions to access and manipulate dates in your T-SQL scripts, functions, and stored procedures. below
Label:SQL Server Date functionThe following table lists the most important built-in date functions in SQL Server:
function
Description
GETDATE ()
Returns the current date and time
DATEPART ()
Returns a separate part of the
current date to the last day of the month. Please note: This example and the other examples in this article will only use the DateDiff and DATEADD functions to calculate the date we want. Each example will get the date you want to calculate by calculating the previous time interval and then adding and reducing it.
Th
Tags: func sele body maintains tab data between running SQLSqlDate function
SQL Date (Dates)When we work on dates, the hardest task is to ensure that the date you insert is formatted to match the format of the date column in the database. As long as your data contains only the
Declare @ DT datetime
Set @ dt = getdate ()
Declare @ number intSet @ number = 3
-- 1. Specify the first or last day of the year-- A. The first day of the yearSelect convert (char (5), @ DT, 120) + '1-1'
-- B. The last day of the yearSelect convert (char (5), @ DT, 120) + '12-31'
-- 2. Specify the first or last day of the quarter where the date is located.-- A. The first day of the quarterSelect convert (datetime,Convert (char (8 ),Dateadd (
OneSQL Server Date-time functionsDate and time functions in SQL Server1. Current system date, timeSelectGetDate()2.DateAddOn the basis of adding a period of time to the specified date, return the newDatetimeValueExample: Add 2 days to the dateSelectDateAdd(Day,2,‘2004-10-15‘)--return: 2004-10-17 00:00:00.0003.DateDiffR
= ' 01-2002-03 'SELECT @dt--Results: 2002-01-03 00:00:00.000--the date entered does not specify the century partSET @dt = ' 01-02-03 'SELECT @dt--Results: 2003-01-02 00:00:00.000GO--3./*--descriptionIf the date entered does not contain a date separator, SQL Server interprets the dateSetting for set DATEFORMAT is ignor
SQL date
When processing a date, the most difficult task is to ensure that the format of the inserted Date matches the format of the date column in the database.
As long as the data contains only the date part, running the query w
Label:One, SQL Server date-time functionsDate and time functions in SQL Server1. Current system date, timeSelect GETDATE ()2. DateAdd returns a new datetime value based on adding a period of time to the specified dateExample: Add 2 days to the dateSelect DATEADD (day,2, ' 2004-10-15 ')--return: 2004-10-17 00:00:00.0003
Common functions in Oralce SQL language (3) DATE functions operate data of the DATE type. Most of its input parameters are of the DATE type, and the output parameters are also of the DATE type 1. SYSDATE function. This function does not require any parameters, returns the cu
, or 25thDatePart (' y ', ' 2005-7-25 22:56:32 ') returns a value of 206 that is the No. 206 Day of the YearDatePart (' yyyy ', ' 2005-7-25 22:56:32 ') returns a value of 2005 that is 2005The SQL Server DATEPART () function returns a portion of the SQL Server datetime field.The syntax for the SQL Server DATEPART () function is:DATEPART (Portion, datetime)where da
One, SQL Server date-time functionsDate and time functions in SQL Server1. Current system date, timeSelect GETDATE ()2. DateAdd returns a new datetime value based on adding a period of time to the specified dateExample: Add 2 days to the dateSelect DATEADD (day,2, ' 2004-10-15 ')--return: 2004-10-17 00:00:00.0003. Date
Tags: date projection t-sql date conversion DECLARE @dt datetime set @dt =getdate () DECLARE @number int Set @number = 3--1. Specifies the date--a the first or last day of the year. The first day of the year select CONVERT (char (5), @dt, +) + ' 1-1 '--b. The last day of the year select CONVERT (char (5), @dt, 120)
Processing dates in PHP is very inconvenient, such as asking for a difference between the two dates of the month? What should we do?FileName: date.inc.php3Before you use these two functions, you must first convert the date or datetime to the timestamp type.Such as:$today =mktime (0,0,0,date ("M"), Date ("D"),
SQL statement for date addition Query
This is an SQL statement that describes the date addition of mssql access. It provides a large number of functions for database tutorial date operations. Today, we use the dateadd function to add dates.
*/
// Method 1 stored procedure
Se
* FROM consumptionFor example, I want to count the daily data and (two records at 25th) Use the following statement to count only the data for each day of June and (if the year is more, plus the restrictions)Select DATEPART (dd,cdate) as ' number ', sum (Cmoney) from consumption where DATEPART (mm,cdate) =6 GROUP by DATEPART (Dd,cdate)Show results24 23.0025 98.0026 45.00、、、Statistics for one week are as followsSelect DATEPART (wk,cdate) as ' Week ', sum (Cmoney) from consumption Group by DATEPA
Server:select GetDate ()2.DateDiff (' s ', ' 2005-07-20 ', ' 2005-7-25 22:56:32 ') returns a value of 514,592 secondsDateDiff (' d ', ' 2005-07-20 ', ' 2005-7-25 22:56:32 ') returns a value of 5 days3.DatePart (' W ', ' 2005-7-25 22:56:32 ') returns a value of 2 that is Monday (Sunday is 1, Saturday is 7)DatePart (' d ', ' 2005-7-25 22:56:32 ') returns a value of 25, or 25thDatePart (' y ', ' 2005-7-25 22:56:32 ') returns a value of 206 that is the No. 206 Day of the YearDatePart (' yyyy ', ' 2
Asp tutorial. net SQL server Date and Time Format convert ConversionOn the client, you can use the tostring () method for formatting:
Datetime. now. tostring ("d") returns the standard date format.
Datetime. now. tostring ("mm dd, yy") returns the Chinese Date Format: April 13
Datetime. now. tostring ("hh: mm") re
()
> return line The current date and time of the EC
datediff (interval,date1,date2)
Returns the difference between date2 and date1 two dates, as specified by interval date2-date1
dateadd (interval,number,date)
datepart (interval,date)
Return date, in
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.
A Free Trial That Lets You Build Big!
Start building with 50+ products and up to 12 months usage for Elastic Compute Service