❮Previous❮ SQL Server FunctionsNext❯ ExampleGet your own SQL Server Return the length of an expression (in bytes): SELECTDATALENGTH('W3Schools.com'); Try it Yourself » Definition and Usage The DATALENGTH() function returns the number of bytes used to represent an expression. ...
Note:The DATALENGTH() function in SQL Server counts both leading and trailing spaces when calculating the length of the expression. SQL Datalength() syntax DATALENGTH(expression) In this syntax: expression: It is required value, here, the data type to return the length for, furthermore, If the...
5 --Argument data type xml is invalid for argument 1 of len function. John Huang, SQL Server MCM + MVP, http://sqlnotes.info 泰莱大学硕士
SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) This function returns the number of bytes used to represent any expression. Note To return the number of characters in a string expression, use theLENfunction. ...
This function is translated to a corresponding function in the database. For information about the corresponding SQL Server function, seeDATALENGTH (Transact-SQL). Applies to .NET Framework 4.8.1 and other versions ProductVersions .NET Framework4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, ...
Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW)This function returns the number of bytes used to represent any expression.Note To return the number of characters in a string expression, use the LEN function.Transact-SQL ...
This can be demonstrated by using the SET STATISTICS IO command in SQL Server 2005 which exposes new counters for LOB reads (logical, physical and read-ahead). The script below shows the amount of IO performed when only DATALENGTH function is used on a BLOB column vs reading the entire ...
Im folgenden Beispiel wird nach der Länge derName-Spalte in derProduct-Tabelle gesucht. USE AdventureWorks; GO SELECT length = DATALENGTH(Name), Name FROM Production.Product ORDER BY Name; GO Siehe auch Verweis LEN (Transact-SQL) CAST und CONVERT (Transact-SQL) ...
According to the documentation the DATALENGTH() function should return values in bytes, but it seems that's not the case. Oracle and Postgres work as expected. -- Oracle, 3 bytes SELECT LENGTHB('和'); -- Postgres, 3 bytes SELECT OCTET_LENGTH('和'); **-- SQL Server, 1 byte SELECT...
SQL Server 中的 DATALENGTH()函数 原文:https://www . geesforgeks . org/data length-function-in-SQL-server/ DATALENGTH() : 这个函数返回一个表达式的长度,表达式的长度将以字节为单位。语法: DATALENGTH( expression ) 参数– 该方法接受如上所述的单参