SQL Server

United States (English) Sign in

Print This Topic Print Multiple Topics

Home 2012 2008 R2 2008 Previous Versions Library Forums

TechNet Library

SQL Server

SQL Server Compact

SQL Server Compact 4.0

SQL Server Compact Technical Reference

SQL Reference (SQL Server Compact)

SQL Overview (SQL Server Compact)

+ (Add) (SQL Server Compact)

+ (Positive) (SQL Server Compact)

+ (String Concatenation) (SQL Server Compact)

- (Subtract) (SQL Server Compact)

- (Negative) (SQL Server Compact)

* (Multiply) (SQL Server Compact)

/ (Divide) (SQL Server Compact)

% (Modulo) (SQL Server Compact)

& (Bitwise AND) (SQL Server Compact)

| (Bitwise OR) (SQL Server Compact)

^ (Bitwise Exclusive OR) (SQL Server Compact)

~ (Bitwise NOT) (SQL Server Compact)

= (Equals) (SQL Server Compact)

> (Greater Than) (SQL Server Compact)

< (Less Than) (SQL Server Compact)

>= (Greater Than or Equal To) (SQL Server Compact)

<= (Less Than or Equal To) (SQL Server Compact)

<> (Not Equal To) (SQL Server Compact)

!= (Not Equal To) (SQL Server Compact)

!< (Not Less Than) (SQL Server Compact)

!> (Not Greater Than) (SQL Server Compact)

@@IDENTITY (SQL Server Compact)

@@DBTS (SQL Server Compact)

@@SHOWPLAN (SQL Server Compact)

ABS (SQL Server Compact)

ACOS (SQL Server Compact)

ALL (SQL Server Compact)

ALTER TABLE (SQL Server Compact)

AND (SQL Server Compact)

ASIN (SQL Server Compact)

ATAN (SQL Server Compact)

ATN2 (SQL Server Compact)

AVG (SQL Server Compact)

BETWEEN (SQL Server Compact)

CASE (SQL Server Compact)

CEILING (SQL Server Compact)

CHARINDEX (SQL Server Compact)

COALESCE (SQL Server Compact)

COLLATE (SQL Server Compact)

CAST and CONVERT (SQL Server Compact)

COS (SQL Server Compact)

COT (SQL Server Compact)

COUNT (SQL Server Compact)

CREATE DATABASE (SQL Server Compact)

CREATE INDEX (SQL Server Compact)

CREATE STATISTICS (SQL Server Compact)

CREATE TABLE (SQL Server Compact)

DATALENGTH (SQL Server Compact)

DATEADD (SQL Server Compact)

DATEDIFF (SQL Server Compact)

DATENAME (SQL Server Compact)

DATEPART (SQL Server Compact)

DDL Statements (SQL Server Compact)

DEGREES (SQL Server Compact)

DELETE (SQL Server Compact)

DML Statements (SQL Server Compact)

DROP INDEX (SQL Server Compact)

DROP STATISTICS (SQL Server Compact)

DROP TABLE (SQL Server Compact)

EXISTS (SQL Server Compact)

EXP (SQL Server Compact)

Expressions (SQL Server Compact)

FLOOR (SQL Server Compact)

FROM Clause (SQL Server Compact)

Functions (SQL Server Compact)

GETDATE (SQL Server Compact)

GROUP BY Clause (SQL Server Compact)

HAVING Clause (SQL Server Compact)

Hints (SQL Server Compact)

IDENTITY Property (SQL Server Compact)

IN (SQL Server Compact)

Information Schema (SQL Server Compact)

INSERT (SQL Server Compact)

IS [NOT] NULL (SQL Server Compact)

LEN (SQL Server Compact)

LIKE (SQL Server Compact)

LOG (SQL Server Compact)

LOG10 (SQL Server Compact)

LOWER (SQL Server Compact)

LTRIM (SQL Server Compact)

MAX (SQL Server Compact)

MIN (SQL Server Compact)

NCHAR (SQL Server Compact)

NEWID (SQL Server Compact)

NOT (SQL Server Compact)

OFFSET FETCH Clause (SQL Server Compact)

Operators (SQL Server Compact)

OR (SQL Server Compact)

ORDER BY Clause (SQL Server Compact)

PATINDEX (SQL Server Compact)

PI (SQL Server Compact)

POWER (SQL Server Compact)

RADIANS (SQL Server Compact)

RAND (SQL Server Compact)

REPLACE (SQL Server Compact)

REPLICATE (SQL Server Compact)

Reserved Words (SQL Server Compact)

ROUND (SQL Server Compact)

RTRIM (SQL Server Compact)

SELECT Statement (SQL Server Compact)

SET IDENTITY INSERT (SQL Server Compact)

SET SHOWPLAN_XML (SQL Server Compact)

SET STATISTICS XML (SQL Server Compact)

SIGN (SQL Server Compact)

SIN (SQL Server Compact)

SOME | ANY (SQL Server Compact)

sp_show_statistics (SQL Server Compact)

sp_rename (SQL Server Compact)

SPACE (SQL Server Compact)

SQRT (SQL Server Compact)

STR (SQL Server Compact)

STUFF (SQL Server Compact)

SUBSTRING (SQL Server Compact)

SUM (SQL Server Compact)

TAN (SQL Server Compact)

timestamp (SQL Server Compact)

TOP (SQL Server Compact)

UNICODE (SQL Server Compact)

UNION (SQL Server Compact)

UPDATE (SQL Server Compact)

UPDATE STATISTICS (SQL Server Compact)

UPPER (SQL Server Compact)

USE (SQL Server Compact)

WHERE Clause (SQL Server Compact)

Minimize

This topic has not yet been rated - Rate this topic

DATEDIFF (SQL Server Compact)

Returns the number of date and time boundaries crossed between two specified dates.


DATEDIFF ( datepart , startdate , enddate )

datepart

The parameter that specifies on which part of the date to calculate the difference. For more information, see the "Remarks" section later in this topic.

startdate

The beginning date for the calculation. The startdate argument is an expression that returns a datetime value or a Unicode character string in a date format.

If you specify only the last two digits of the year, values less than or equal to the last two digits of the value of the two digit year cutoff configuration option are in the same century as the cutoff year. Values greater than the last two digits of the value of this option are in the century that comes before the cutoff year. For example, if the two digit year cutoff is 2049 (the default value), the '49' is interpreted as 2049 and '50' is interpreted as 1950. To avoid ambiguity, use four-digit years.

For more information about how to specify dates, see datetime in Data Types.

enddate

The ending date for the calculation. The enddate argument is an expression that returns a datetime value or a Unicode character string in a date format.

int

The following table lists the datepart options and abbreviations recognized by SQL Server Compact.

Datepart	Abbreviations
year	yy, yyyy
quarter	qq, q
month	mm, m
dayofyear	dy, y
day	dd, d
week	wk, ww
weekday	dw
hour	hh
minute	mi, n
second	ss, s
millisecond	ms

The following example determines the number of days it took to ship the orders made by a company that has a Customer ID of 'VINET'.

SELECT [Order ID], DATEDIFF(d, [Order Date], [Shipped Date]) AS [Shipping Time in Days] FROM Orders WHERE ([Customer ID] = 'VINET')

This is the result set:

OrderID         Shipping Time in Days
-------------------------------------
10295           8
10737           7
10274           10
10248           12
10739           5

Did you find this helpful? Yes No

Not accurate

Not enough depth

Need more code examples

(1500 characters remaining)

© 2013 Microsoft

Manage Your Profile

|

Site Feedback

© 2013 Microsoft. All rights reserved.