Applies to:SQL Server Returns the length of the string in characters. Syntax fn:string-length() as xs:integer fn:string-length($arg as xs:string?) as xs:integer Arguments $arg Source string whose length is to be computed. Remarks
Functions on String Values - substring Functions on String Values - string-length Functions on String Values - lower-case Functions on String Values - upper-case Numeric Values Functions - ceiling Numeric Values Functions - floor Numeric Values Functions - round ...
Applies to:SQL Server Returns the length of the string in characters. Syntax fn:string-length() as xs:integer fn:string-length($arg as xs:string?) as xs:integer Arguments $arg Source string whose length is to be computed. Remarks
LEN(string_expression) 1. 其中,string_expression是要计算长度的字符串表达式。下面是一个例子: SELECTLEN('Hello World')ASLength; 1. 输出结果为: Length --- 11 1. 2. 3. 2. DATALENGTH函数 DATALENGTH函数可以用来返回一个字符串的字节数,包括末尾的空格。下面是DATALENGTH函数的语法: DATALENGTH(expression...
语法:SUBSTRING(expression, start, length) 描述:返回 SQL Server 中的字符、二进制、文本或图像表达式的一部分。 示例:SELECTSUBSTRING('截取子字符串',, 1) AS Column1, SUBSTRING('截取子字符串',, 4) AS Column1, SUBSTRING('截取子字符串',, 3) AS Column1; ...
语法:SUBSTRING(expression, start, length) 描述:返回SQL Server中的字符、二进制、文本或图像表达式的一部分。 示例:SELECTSUBSTRING('截取子字符串',1,1)ASColumn1,SUBSTRING('截取子字符串',3,4)ASColumn1,SUBSTRING('截取子字符串',7,3)ASColumn1; ...
语法:SUBSTRING(expression, start, length) 描述:返回SQL Server中的字符、二进制、文本或图像表达式的一部分。 示例:SELECTSUBSTRING('截取子字符串',1,1)ASColumn1,SUBSTRING('截取子字符串',3,4)ASColumn1,SUBSTRING('截取子字符串',7,3)ASColumn1; ...
SQL Server has many built-in functions.This reference contains string, numeric, date, conversion, and some advanced functions in SQL Server.SQL Server String FunctionsFunctionDescription ASCII Returns the ASCII value for the specific character CHAR Returns the character based on the ASCII code ...
DataLength(String) 傳回用來代表任何運算式的位元組數目。 C# 複製 [System.Data.Entity.DbFunction("SqlServer", "DATALENGTH")] [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA1801:ReviewUnusedParameters", MessageId="arg")] public static Nullable<int> DataLength (string arg); ...
❮Previous❮ SQL Server FunctionsNext❯ ExampleGet your own SQL Server Return a number as a string: SELECTSTR(185); Try it Yourself » Definition and Usage The STR() function returns a number as a string. Syntax STR(number,length,decimals) ...