~ 4Month Mm M 1 ~ 12Day of the year Dy y the number of days of the year, the day of the first 1-366Day Dd D, 1-31Weekday Dw W Day of the week, day of the week 1-7Week Wk WW Week, week of the year 0 ~ 51Hour Hh H 0 ~ 23Minute Mi N min 0 ~ 59Second Ss s seconds 0 ~ 59Millisecond MS-MS 0 ~ 999In Access and ASP, the system date time is obtained with date () and now (), where Datediff,dateadd,datepart is also u
, the system date time is obtained with date () and now (), where Datediff,dateadd,datepart is also used in Access and ASP, and the usage of these functions is similar.4. Examples of SQL Server date functions1.GetDate () for SQL S
Server
SQL Server Chinese version of the default Date field datetime format is YYYY-MM-DD Thh:mm:ss.mmmFor example:Select GETDATE ()2004-09-12 11:06:08.177Sorted out the date format con
Tags: des style class C a colorWhen you synchronize an Oracle table to SQL Server, you may experience this error when you apply data on the SQL Server side. 2014-05-17 17:20:24 WARNING OGG-01154 SQL error-2147217887 mapping Applsys. Fnd_flex_validation_rules to dbo. Fnd_flex
1.sqlserver CAST and CONVERT functionsExplicitly converts an expression of a data type to another data type. CAST and CONVERT provide similar functionality.GrammarUsing CAST:CAST (expression as data_type)Using CONVERT:CONVERT (data_type[(length)], expression [, style])ParametersExpressionIs any valid Microsoft SQL Server
Both cast and convert in SQL Server convert an expression from one data type to another data type. Because SQL Server provides two features, it can be confusing to choose which feature should be chosen or in which case the feature should be used. Convert is designed for use
Tags: var SQL Server reference format alt man Read mailbox value 1 overview This article focuses on the two functions involved in type conversion in SQL Server: Cast and convert. 2 Specific content 2.1
Explicitly converts a data type expression to another data type. CAST and CONVERT provide similar functions.Syntax
Use CAST:
CAST (expression AS data_type)
Use CONVERT:
CONVERT (data_type [(length)], expression [, style])Parameters
Expression
Is any valid Microsoft SQL Server
First, the CONVERT functionCharacter Set conversions: convert (XXX USING gb2312) type conversions are the same as SQL Server, but differ on type parameters: CAST (xxx as type), convert (XXX, type), type must be of the following type:Available type binary with binary prefix effect: binary character type, parameter: CHAR () Dat
These functions in fact, many online data, but in order to facilitate their own memory, I still decided to write a bit, all say good memory than bad writing, so or write a bit more.The cast () function essentially converts one type to another, such as converting a string type to a time type: SELECT CAST (' 2011-10-2 ' as datetime), or convert the numeric type to a string type: SELECT
Detailed description of the difference between cast and convert for forced type conversion in SQL SERVER, castconvert
Difference between cast and convert forced conversions in SQL SERVER
In
syntax structure:
1. Cast
Syntax structure: CAST (expression as data_type [(length)])
2. Convert
Syntax structure: CONVERT (data_type [(length)], expression [, style])
3. Parse
Syntax structure: PARSE (string_value as data_type [USING culture])
Where Parse is a new feature of SQL Server expression must be a string fo
1. Cast Cast (data as data_type) Example: declare @ data int Set @ DATA = 5 Select cast (@ data as char (2) + 'abc' -- Result: 5 ABC 2. Convert Convert (data_type, expresses (, style) -- style is the style of the specified date
Select convert (varchar, getdate (), 120)-- 15:10:02
Select Replace
Label:In SQL Server, both the cast and CONVERT functions are available for type conversions, and their functions are the same. It's just a different syntax. Cast is generally easier to use, and the advantage of convert is that dates and values can be formatted. Select CAST('
In SQL Server, both the cast and CONVERT functions are available for type conversions, and their functions are the same.It's just a different syntax.Cast is generally easier to use, and the advantage of convert is that dates and values can be formatted.Select CAST (' 123 ' as int)--123Select CONVERT (int, ' 123 ')--123
): 2006-05-16 10:57:49Select CONVERT (varchar), GETDATE (), 121): 2006-05-16 10:57:49.700Select CONVERT (varchar), GETDATE (), 126): 2006-05-16t10:57:49.827Select CONVERT (varchar), GETDATE (), ():???? ?????? 1427 10:57:49:907am Select CONVERT (varchar), GETDATE (), 131): 18/04/1427 10:57:49:920am If it's easy to solve in C #, what do you do in SQL? I've never done that before. Open SQL
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.