目前分散式開發,比較不強調使用Stored Procedure,而是Data Access Layer僅做單純存取SQL Server,邏輯則寫在BLL,若你有以下的需求,則Stored Procedure仍然適合你。 Introduction 1.SQL Script Reuse: 使用Class寫法僅能達到C#部分的程式碼重複使用,若要達到SQL部分的程式碼重複使用,就必須將SQL寫在Stored Procedure裡。 2...
接下来,创建存储过程,并接受这个表所谓参数输入: 1: create procedure Performance_Solution_Table_Paramters @Temptable Specialtable Readonly 2:as 3: begin 4: select * from @Temptable 5: end 6: Finally, execute the stored procedure : 7: declare @temptable_value specialtable 8: insert into @tempta...
存储过程的优缺点是什么?优点:1.由于应用程序随着时间推移会不断更改,增删功能,T-SQL过程代码会变得更复杂,StoredProcedure为封装此代码提供了一个替换位置。2.执行计划(存储过程在首次运行时将被编译,这将产生一个执行计划-- 实际上是 Microsoft SQL Server为在存储过程中获取由 T-SQL 指定的结果而必须采取的步骤...
1 通过封装实现重用性和逻辑复杂性的隐藏。仅需要通过存储过程的修改(alter procedure)就能应用新的逻辑。 2 减少网络的传输,这是因为存储过程即存储在数据库里,而如果是应用程序方式访问数据库识别有网络传输的成本。 3 存储过程可以提供对数据库进行安全的访问,即赋予了执行存储过程的用户不能直接访问底层的数据库对...
本主题列出了 T-SQL 的外围应用以及本机编译 T-SQL 模块主体支持的功能,如存储过程 (CREATE PROCEDURE (Transact-SQL))、标量用户定义函数、内联表值函数和触发器。 有关本机模块定义的支持功能,请参阅对于本机编译的 T-SQL 模块支持的 DDL。 如需了解不支持构造的完整信...
ERROR_PROCEDURE returns the name of the stored procedure where the error occurred.SQL คัดลอก -- Verify that the stored procedure does not already exist. IF OBJECT_ID ( 'usp_ExampleProc', 'P' ) IS NOT NULL DROP PROCEDURE usp_ExampleProc; GO -- Create a stored ...
RETURN— Exit a server code module (stored procedure, function, and so on) and return control to the calling scope. You can use RETURN <value> to return an INT value to the calling scope. BREAK— Exit WHILE loop run. THROW— Raise errors and potentially r...
Error "The certificate, asymmetric key, or private key file is not valid or does not exist; or you do not have permissions for it." ERROR [HY000] [DataDirect][ODBC Progress OpenEdge Wire Protocol driver][OPENEDGE]Invalid date string (7497) (pgoe1022.dll) Error = [Microsoft][ODBC Driv...
If I create a stored procedure using T-SQL in SQL Server Management Studio and define output parameters in this stored procedure, can I call the stored procedure in reporting services and use...
You will also create a view and a stored procedure, and then grant the user permission to the stored procedure. Lesson 3: Deleting Database Objects In this lesson, you remove access to data, delete data from a table, delete the table, and then delete the database. Requirements To ...