SET变量名=表达式值[,variable_name = expression ...] Ⅲ.用户变量 ⅰ.在MySQL客户端使用用户变量 mysql>SELECT'Hello World'into@x; mysql>SELECT@x;+---+|@x|+---+|Hello World|+---+mysql>SET@y='Goodbye Cruel World'; mysql>SELECT@y;+---+|@y|+---+|Goodbye Cruel World|+---+mysql...
存储过程(stored procedure)有时候称为sproc,它是真正的脚本-或者更准确的说,他是批处理(batch)-它存储于数据库中,而不是淡出的文件中。无论如何,这个比较并不是很确定。存储过程有输出参数,输入参数已及返回值等。而脚本不会有这些内容。 存储过程基本语法: CREATE PROCEDURE|PROC [<parameter name> <data t...
procedure_name [;number] {[ [ @parameter1 = ] value | [@parameter1]=@variable [ OUTPUT ] ] }.. [ WITH RECOMPILE ] 举例: 【例9.1】创建一个存储过程,输出所有学生的姓名、课程名称和期末成绩信息。 -- 创建 CREATE PROCEDURE Pstu_sc0 AS SELECT sname, cname, final FROM student s ,course...
--1、 不带参数的存储过程:创建一个存储过程,查看所有读者的姓名、可借本数、可借天数和已借书本数。 create procedure usp_selelctReader as select rdName,canLendQty,canLendDay,rdBorrowQty from Reader, ReaderType where Reader.rdType=ReaderType.rdType --测试执行 exec usp_selelctReader 1. 2. 3. ...
EXEC sp_procoption @ProcName = N'<stored procedure name>' , @OptionName = 'startup' , @OptionValue = 'on'; GO 在工具栏中,选择“执行”。 阻止在启动时自动执行过程 Asysadmin可以使用sp_procoption来停止在 SQL Server 启动时自动执行的过程。
StoredProcedure:生成 SQLServer 存储过程对象和(可选)包含用于创建存储过程的查询的 .sql 文件。 StoredProcedure$registrationVec 包含表示创建存储过程所需的查询的字符串 用法 StoredProcedure (func, spName, ..., filePath = NULL ,dbName = NULL, connectionString = NULL, batchSeparator = "GO") ...
SQL Server stored procedures have four mechanisms used to return data: Each SELECT statement in the procedure generates a result set. The procedure can return data through output parameters. A cursor output parameter can pass back a Transact-SQL server cursor. The procedure c...
conn.Open(); SqlCommand cmd = new SqlCommand("urunGiris", conn); cmd.CommandType = CommandType.StoredProcedure; cmd.Parameters.Add("TableName", SqlDbType.VarChar, 100).Value = str; cmd.Parameters.Add("MalzemeStokNo", SqlDbType.VarChar, 50).Value = stokNo.Text; cmd.Parameters.Add("Mal...
A stored procedure is a prepared SQL code that you can save, so the code can be reused over and over again.So if you have an SQL query that you write over and over again, save it as a stored procedure, and then just call it to execute it....
There are different ways to execute a stored procedure. The first and most common approach is for an application or user to call the procedure. Another approach is to set the stored procedure to run automatically when an instance of SQL Server starts. ...