1、标量值函数(返回一个标量值) CREATEFUNCTIONdbo.func_date_get_name(@date_intovarchar(8))--CREATE FUNCTION 函数名称(@参数名 参数的数据类型)RETURNSvarchar(20)--返回返回值的数据类型--[WITH ENCRYPTION] --如果指定了 encryption 则函数被加密asBEGINdeclare@result_namevarchar(20)select@result_name=Val...
一.FUNCTION: 在sqlserver2008中有3中自定义函数:标量函数/内联表值函数/多语句表值函数,首先总结下他们语法的异同点: 同点:1.创建定义是一样的: a, CREATE FUNCTION F_NAME(传入的参数名称 传入参数的类型) b,RETURNS 返回值类型 c,AS 异点:1.标量函数返回的是一个数据类型值,内联表值函数返回的是一个t...
Applies to:SQL ServerAzure SQL DatabaseAzure 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 of ...
SQL Server Advanced Functions FunctionDescription CASTConverts a value (of any type) into a specified datatype COALESCEReturns the first non-null value in a list CONVERTConverts a value (of any type) into a specified datatype CURRENT_USERReturns the name of the current user in the SQL Server...
Table-valued function examples Show 2 more Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) This article describes how to create a user-defined function (UDF) in SQL Server by using Transact-SQL. Limitations and restrict...
使用ALTER FUNCTION 语句对 Resource Governor 配置中当前未使用的函数进行更改。 使用ALTER RESOURCE GOVERNOR 语句使修改后的分类器处于活动状态,然后重新配置资源调控器。 例如: SQL 复制 ALTER RESOURCE GOVERNOR WITH (CLASSIFIER_FUNCTION = dbo.rg_classifier_B); ALTER RESOURCE GOVERNOR RECONFIGURE...
usingSystem;usingSystem.Collections;usingSystem.Text;usingMicrosoft.SqlServer.Server;// SqlFunction AttributeusingMicrosoft.SqlServer.Types;// SqlHierarchyIdpublicpartialclassHierarchyId_Operations{ [SqlFunction(FillRowMethodName ="FillRow_ListAncestors")]publicstaticIEnumerableListAncestors(SqlHierarchyId h){while...
ALTER RESOURCE GOVERNOR WITH (CLASSIFIER_FUNCTION = dbo.rg_classifier); ALTER RESOURCE GOVERNOR RECONFIGURE; 請驗證資源管理員是否已啟用,正在使用指定的分類器函式,並且分類器函式是否能按照預期運作,這可參考先前範例中的類似作法。 這次,我們會在 [SSMS 連線] 對話方塊的 [App=order_processing] 索引標籤上...
Applies to: SQL Server 2022 (16.x) Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics SQL analytics endpoint in Microsoft Fabric Warehouse in Microsoft Fabric This function returns the maximum value from a list of one or more expressions. Transact-SQL syntax conventions Syntax ...
Examples of breaking changesnot protectedby compatibility level are: Changed column names in system objects. In SQL Server 2012 (11.x) the columnsingle_pages_kbinsys.dm_os_sys_infowas renamed topages_kb. Regardless of the compatibility level, the querySELECT single_pages_kb FROM sys.dm_os_sy...