下面自定义一个根据传入参数(即学生性别)来计算学生平均身高的 Function,示例如下: 1useTest2go34createfunctiondbo.AvgHeight(@Sexvarchar(10)='男')--在这里是给参数默认值,即可以不传参数调用这个函数5returnsdecimal6as7begin8declare@AvgHeightdecimal(10,2)9select@AvgHeight=AVG(Convert(decimal(10,2),S_Hei...
sql server 自定义函数分为三种类型:标量函数(Scalar Function)、内嵌表值函数(Inline Function)、多声明表值函数(Multi-Statement Function) 1、标量函数:标量函数是对单一值操作,返回单一值。 2、内嵌表值函数:内嵌表值函数的功能相当于一个参数化的视图。它返回的是一个表,内联表值型函数没有由BEGIN-END 语句...
SQL Server自定义函数分为三种类型:标量函数(Scalar Function)、内联表值函数(Inline Function)、多语句表值函数(Multi-Statement Function) 标量函数:标量函数返回一个确定类型的标量值,返回值类型为除TEXT、NTEXT、IMAGE、CURSOR、TIMESTAMP和TABLE类型外的其它数据类型。函数体语句定义在BEGIN-END语句内,在 RETURNS 子...
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 ...
server_name Applies to: SQL Server 2008 (10.0.x) and later. Is the name of the linked server on which the table or view is located. server_name can be specified as a linked server name, or by using the OPENDATASOURCE function. When server_name is specified as a linked server, databas...
在SQL Server 2000 中根据函数返回值形式的不同将用户自定义函数分为三种类型:标量函数(Scalar Function)、内嵌表值函数(Inline Function)、多声明表值函数(Multi-Statement Function) 标量函数:标量函数是对单一值操作,返回单一值。能够使用表达式的地方,就可以使用标量函数。像我们经常使用的left、getdate等,都属于标...
SQL Server Scalar UDF inline hi, here is a demo version of the function and the sample call to it with output -- function used to get value for a key CREATE FUNCTION [dbo].[fn_ForDemo] (@mSettings NVARCHAR(1000), @mKey NVARCHAR(100))...
SQ = 服务队列TA = 程序集 (CLR) DML 触发器TF = SQL table-valued-functionTR = SQL DML 触发器TT = 表类型UQ = UNIQUE 约束X = 扩展存储过程适用于:SQL Server 2014 (12.x) 及更高版本、Azure SQL Database、Azure Synapse Analytics、Analytics Platform System (PDW) 。ST = STATS_TREE适用于:...
S’applique à : SQL Server 2008 (10.0.x) et versions ultérieures.SQL Copie -- Use the OPENDATASOURCE function to specify the remote data source. -- Specify a valid server name for Data Source using the format -- server_name or server_nameinstance_name. INSERT INTO OPENDATASOURCE('...
For an inline table-valued function, there's no function body; the table is the result set of a single SELECT statement. For examples, see Create user-defined functions (database engine). System functions SQL Server provides many system functions that you can use to perform various operations...