FunctionDescription CAST Converts a value (of any type) into a specified datatype COALESCE Returns the first non-null value in a list CONVERT Converts a value (of any type) into a specified datatype CURRENT_USER Returns the name of the current user in the SQL Server database IIF Returns...
Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Creates a user-defined function (UDF), which is a Transact-SQL or common language runtime (CLR) routine. A user-defined function accepts parameters, performs an action such as a complex calculation, and returns the result ...
C# Example C# usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Management;namespaceExpressDetection{classProgram{staticvoidMain(string[] args){if(!EnumerateSQLInstances()) { Console.WriteLine("There are no instances of SQL Server 2005 or SQL Server 2008 installed...
The following example invokes the function and specifies employee ID 1.SQL Copy SELECT EmployeeID, FirstName, LastName, JobTitle, RecursionLevel FROM dbo.ufn_FindReports(1); For more information and examples of inline table-valued functions (inline TVFs) and multi-statement table-valued ...
SQL SERVER 代码 加载程序集 USEInvestorRelationsCREATEASSEMBLY ExampleUDFFROM'E:\学习\SessionTest\TestKZCCGC\bin\Debug\TestKZCCGC.dll' 创建函数 1 2 3 CREATEFUNCTIONExampleUDFTwo() RETURNSnvarchar(1000) ASEXTERNALNAMEExampleUDF.UserDefinedFunctions.ExampleUDF; ...
[Microsoft.SqlServer.Server.SqlFunction] public static SqlBytes BinaryDecompress(SqlBytes inputBinary)//解密 { byte[] inputBytes = (byte[])inputBinary.Value; using (MemoryStream memStreamIn = new MemoryStream(inputBytes)) { using (GZipStream s = ...
Any common function can be created using this technique to augment the regiment of functions available in SQL Server. Another example is a function that formats a date to the MM/DD/YYYY format with leading zeros: CREATE FUNCTION fnCOM_StandardDate (@dtDate DATETIME) RETURNS VARCHAR(10...
Instead, use a variable to pass a function value to the parameter, as in the following example: SQL -- Passing the function value as a variable.DECLARE@CheckDate datetime;SET@CheckDate =GETDATE(); EXEC dbo.uspGetWhereUsedProductID 819, @CheckDate; GO ...
了解如何建立與測試分類使用者定義函式,這牽涉到在 SQL Server Management Studio 查詢編輯器中執行 Transact-SQL 陳述式。
SQL Server figures out that the "GROUP BY" column list should be the list of columns in the input table that were not referred to explicitly by the PIVOT operator in the aggregate function or in the IN clause. So that you don't get undesired columns in the implicit GROUP BY column list...