在PostgreSQL中,除了标准 SQL 语句之外还支持使用各种过程语言(例如 PL/pgSQL、C、PL/Tcl、PL/Python、PL/Perl、PL/Java 等 )创建复杂的过程和函数,称为存储过程(Stored Procedure)和自定义函数(User-Defined Function)。存储过程支持许多过程元素,例如控制结构、循环和复杂的计算。 使用存储过程带来的好处包括: 减...
[ FOR REPLICATION ] AS sql_statement [ ...n ] ---调用存储过程--- EXECUTE Procedure_name '' --存储过程如果有参数,后面加参数格式为:@参数名=value,也可直接为参数值value ---删除存储过程--- drop procedure procedure_name --在存储过程中能调用另外一个存储过程,而不能删除另外一个存储过程 创...
CREATE{PROC|PROCEDURE}[schema_name.]procedure_name[; number][{ @parameter [ type_schema_name.]data_type }[VARYING][= default][OUT | OUTPUT][READONLY]][,...n][WITH <procedure_option> [ ,...n]][FOR REPLICATION]AS{<sql_statement>[;][...n]|<method_specifier>}[;]<procedure_option...
Stored Procedure Syntax CREATEPROCEDUREprocedure_name AS sql_statement GO; Execute a Stored Procedure EXECprocedure_name; Demo Database Below is a selection from the "Customers" table in the Northwind sample database: CustomerIDCustomerNameContactNameAddressCityPostalCodeCountry ...
The ATOMIC WITH block is required for natively compiled stored procedures.If the procedure RETURNs (explicitly through the RETURN statement, or implicitly by completing execution), the work performed by the procedure is committed. If the procedure THROWs, the work performed by the procedure is ...
存储过程(Stored Procedure)是一种在数据库中存储复杂程序,以便外部程序调用的一种数据库对象。 存储过程是为了完成特定功能的SQL语句集,经编译创建并保存在数据库中,用户可通过指定存储过程的名字并给定参数(需要时)来调用执行。 笔记:简答来说,存储过程就是为以后使用而保存的一条或者多条SQL语句。
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...
If the stored procedure that was called here, Sales.usp_SalesPerformace, has an INSERT EXEC inside of it, the following error will occur. Msg 8164, Level 16, State 1, Procedure usp_SalesPerformance, Line 35 An INSERT EXEC statement cannot be nested. ...
The authorization ID that is used to create the stored procedure must have authority to create programs that are to be run in the specified WLM environment. The owner of the procedure is determined by how the CREATE PROCEDURE statement is invoked: If the statement is embedded in a prog...