1 create function [函数的所有者].函数名(标量参数 [as] 标量参数类型 [=默认值]) 2 returns @表变量 table 表的定义(即列的定义和约束) 3 [with {Encryption | Schemabinding }] 4 [as] 5 begin 6 函数体(即 Transact-SQL 语句) 7 return 8 end 下面自定义一个根据传入参数(即学生学号)来查询学生...
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...
Syntax for Transact-SQL inline table-valued functions. syntaxsql 复制 CREATE [ OR ALTER ] FUNCTION [ schema_name. ] function_name ( [ { @parameter_name [ AS ] [ type_schema_name. ] parameter_data_type [ NULL ] [ = default ] [ READONLY ] } [ , ...n ] ] ) RETURNS TABLE [...
if (IsInlineTableValuedFunction(modelElement)) { return problems; } string elementName = GetElementName(ruleExecutionContext, modelElement); // The rule execution context has all the objects we'll need, including the // fragment representing the object, // and a descriptor that lets ...
Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Memory-optimized tables are created using CREATE TABLE (Transact-SQL). Memory-optimized tables are fully durable by default, and, like transactions on (traditional) disk-based tables, transactions on memory-optimized tables are ...
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:...
Learn how row-level security uses group membership or execution context to control access to rows in a database table in SQL Server.
ALTER TABLE modifies a table definition by altering, adding, or dropping columns and constraints. ALTER TABLE also reassigns and rebuilds partitions, or disables and enables constraints and triggers.
] parameter_data_type [ NULL ] [ = default ] [ READONLY ] } [ , ...n ] ] ) RETURNS return_data_type [ WITH <function_option> [ , ...n ] ] [ AS ] BEGIN function_body RETURN scalar_expression END [ ; ] Syntax for Transact-SQL inline table-valued functions. syntaxsql Copy...