PostgreSQL存储过程(Stored Procedure)是一组为了完成特定功能的SQL语句集,这些语句被编译并保存在数据库中,用户可以通过调用存储过程来执行这些语句。存储过程可以接受参数、返回结果集,并且可以在其中使用条件判断、循环等控制结构。 2. PostgreSQL存储过程的创建语法 在PostgreSQL中,创建存储过程的基本语法如下: sql CREATE...
CREATE OR REPLACE PROCEDURE expire_rows (retention_period INTERVAL) AS $$ BEGIN DELETE FROM cache WHERE inserted_at < NOW() - retention_period;COMMIT;END;$$ LANGUAGE plpgsql;CALL expire_rows('60 minutes'); -- This will remove rows older than 1 hour 为了定期调用这个expire_rows程序。可以使用...
postgres Stored procedure Multiple ResultSets were returned by the query - How do i map the result of the postgres stored procedure result into my JRXML file fields <parameter name="refcursor" class="java.sql.R...
How often does my stored procedure get called? Now, if you want to monitor the performance of procedures, it gets a bit difficult. Whilst regular functions can be tracked usingtrack_functions = on, there is no such facility for procedures. You can however track the execution of CALL statemen...
一,存储过程(stored procedure,简称sp,也称为Procedure,过程)存储过程是在大型数据库系统中,一组完成特定功能的sql语句集,经过编译后存储在数据库中,用户通过存储过程的名字及参数来执行它 二,函数(function) 1,to_char/nvl,coalesc等都是oracle数据库的内置函数 ...
Stored procedures (sprocs) There are also functions that make it easy to call a stored procedure with a given set of arguments. Consider a database that has the following sproc defined: CREATE PROCEDURE insert_data (ainteger, binteger) LANGUAGE SQLBEGINATOMICINSERT INTOtblVALUES(a);INSERT IN...
CREATEORREPLACEPROCEDUREexpire_rows (retention_periodINTERVAL)AS$$BEGINDELETEFROMcacheWHEREinserted_at <NOW() - retention_period;COMMIT;END;$$ LANGUAGE plpgsql;CALLexpire_rows('60 minutes');-- This will remove rows older than 1 hour 为了定期调用这个expire_rows程序。可以使用PostgreSQL的另一个大法宝...
调用存储过程:使用游标对象的execute()方法执行存储过程的调用语句。可以使用PL/pgSQL语言编写存储过程。 代码语言:txt 复制 cur.execute("CALL your_stored_procedure()") 获取结果:如果存储过程返回结果集,可以使用游标对象的fetchall()方法获取所有结果行。
Hello, I'm trying to call a stored procedure on Postgres from ADF, but I couldn't make it work.Can you help me please ? Or give me a link to a do...
to have been a change in how to call stored sql procedures. Can someone help please? David, Daniele: thank you for replying. David: the search routine works correctly in one environment, so I don't think raw SQL is the answer Daniele: What would be the 'search_path'? As I said, '...