SELECT dbo.ConcatenateStrings(ColumnName) AS AggregatedString FROM YourTable WHERE SomeCondition; 总结 在SQL Server 旧版中,字符串聚合可以通过FOR XML PATH或自定义聚合函数实现。尽管这些方法可能不如新版本中的STRING_AGG函数简洁高效,但它们仍然能够有效地处理字符串聚合的需求。选择合适的方法取决于具体的应用...
1SELECT CONCAT (String_Value1, String_Value2, String_Value3 [, String_ValueN]) Let’s look at an example using Concat string function: In this example, we will use three strings stored in different variables and then concatenate the strings using Concat function. ...
Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) SQL analytics endpoint in Microsoft Fabric Warehouse in Microsoft Fabric SQL database in Microsoft Fabric An operator in a string expression that concatenates two or more...
This function returns a string resulting from the concatenation, or joining, of two or more string values in an end-to-end manner. It separates those concatenated string values with the delimiter specified in the first function argument. (CONCAT_WS indicates concatenate with separator.)...
Se il risultato della concatenazione di stringhe supera il limite di 8.000 byte, il risultato viene troncato. Se tuttavia almeno una delle stringhe concatenate è un tipo di dati per valori di grandi dimensioni, il troncamento non avviene....
A. Using the concat() XQuery function to concatenate strings For a specific product model, this query returns a string created by concatenating the warranty period and warranty description. In the catalog description document, the <Warranty> element is made up of <WarrantyPeriod> and <Description...
This function returns a string resulting from the concatenation, or joining, of two or more string values in an end-to-end manner. It separates those concatenated string values with the delimiter specified in the first function argument. (CONCAT_WS indicates concatenate with separator.) Syntax syn...
CONCAT ( string_value1, string_value2 [, string_valueN ] ) Arguments string_value A string value to concatenate to the other values. Return Types String, the length and type of which depend on the input. Remarks CONCAT takes a variable number of string arguments and concatenates them into...
CONCAT ( string_value1, string_value2 [, string_valueN ] ) Arguments string_value A string value to concatenate to the other values. Return Types String, the length and type of which depend on the input. Remarks CONCAT takes a variable number of string arguments and concatenates them into...
双击“Concatenate.cs”文件,输入如下代码: using System; using System.Data; using Microsoft.SqlServer.Server; using System.Data.SqlTypes; using System.IO; using System.Text; [Serializable] [SqlUserDefinedAggregate( Format.UserDefined, //use custom serialization to serialize the intermediate result ...