-- 定义CREATEPROCEDUREQueryById2@sIDINT=101ASSELECT*FROMfruitsWHEREs_id=@sID; 实例:创建带输出参数的存储过程 -- 定义CREATEPROCEDUREQueryById3@sIDINT=101,@fruitscountINTOUTPUTASSELECT@fruitscount=COUNT(fruits.s_id)FROMfruitsWHEREs_id=@sID;-- 执行DECLARE@fruitscountINT;DECLARE@SIDINT=101;EXECQueryB...
l select_statement,是定义视图的 SELECT 语句。l WITH CHECK OPTION,强制视图上执行的所有数据修改语句都必须符合由定义视图的 select_statement 设置的准则。3.5 删除视图当视图创建完成之后,可能因为应用程序不再需要,需要删除该视图。在删除视图的时候,底层数据表是不受影响的。删除视图可以直接在SQL Server Managemen...
SQL Server提供的数据完整性机制主要包括:约束(Constraint)、默认(Default)、规则(Rule)、触发器(Trigger)、存储过程(Stored Procedure)等。本节只介绍约束,第5章介绍默认和规则,第7章介绍存储过程和触发器。 约束是SQL Server自动强制数据库完整性的方式,约束定义了列中允许的取值。 在SQL Server中,对于数据表的约...
In SQL, a stored procedure is a set of statement(s) that perform some defined actions. We make stored procedures so that we can reuse statements that are used frequently. Stored procedures are thus similar to functions in programming. They can perform specified operations when we call them. C...
The following SQL statement creates a stored procedure named "SelectAllCustomers" that selects all records from the "Customers" table: ExampleGet your own SQL Server CREATEPROCEDURESelectAllCustomers AS SELECT*FROMCustomers GO; Execute the stored procedure above as follows: ...
CREATEPROCEDURE<ProcedureName> @<ParameterName1> <datatype>, @<ParameterName2> <datatype>ASSETNOCOUNTON;SELECT<yourSELECTstatement>; GO For example, the following statement creates the same stored procedure in theAdventureWorksLTdatabase as the previous example, with a slightly different procedure nam...
In the query editor, replace the SELECT statement with the statements for your procedure. To test the syntax, on theQuerymenu, clickParse. To create the stored procedure, on theQuerymenu, clickExecute. To save the script, on theFilemenu, clickSave. Accept the file name or replace it with...
If you include aSELECTstatement in the body of a stored procedure (but not aSELECT ... INTOorINSERT ... SELECT), the rows specified by theSELECTstatement are sent directly to the client. For large result sets, the stored procedure execution won't continue to the next statement until the...
myCommand.SelectCommand.CommandType = CommandType.StoredProcedure; SqlParameter parm = myCommand.SelectCommand.Parameters.Add("@au_id", SqlDbType.VarChar, 11); parm.Value = Login.Text; 在此示例中,@au_id 参数被视为文字值而不是可执行代码。将对此值进行类型和长度检查。如果@au_id值不符合指定的类型...
Stored procedure not sending out emails using sp_send_dbmail Greetings again mates, The following stored proc performs several different tasks at once. At the top of the SP, the SELECT statement queries two tables (Employees and AuthorizedUsers) to pull names and email addresses of employees bas...