postgresql create procedure 返回数据集 post返回数据类型 Http Header里的Content-Type一般有这三种: application/x-www-form-urlencoded:数据被编码为名称/值对。这是标准的编码格式。 multipart/form-data: 数据被编码为一条消息,页上的每个控件对应消息中的一个部分。 text/plain: 数据以纯文本形式(text/json/xm...
PostgreSQL 11 引入了支持事务的存储过程。要定义新的存储过程,请使用 create procedure 语句。 下面说明了 create procedure 语句的基本语法: 用法:create [or replace] procedure procedure_name(parameter_list) language plpgsql as $$ declare -- variable declaration begin -- stored procedure body end; $$ 让...
Many people have have been asking for this feature for years and PostgreSQL 11 will finally have it: I am of course talking about CREATE PROCEDURE. Traditionally PostgreSQL has provided all the means to write functions (which were often simply called “stored procedures”). However, in a functi...
errdetail("\"%s\" is a function.", procedureName) : oldproc->prokind == PROKIND_PROCEDURE ?errdetail("\"%s\" is a procedure.", procedureName) : oldproc->prokind == PROKIND_WINDOW ?errdetail("\"%s\" is a window function.", procedureName) :0))); dropcmd = (prokind == PRO...
SQL is PostgreSQL's native language and works best with the optimizer.A stored procedure is created with the key words CREATE PROCEDURE. Alternatively, use CREATE OR REPLACE PROCEDURE to either create a new procedure or replace a procedure with the same name....
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To overcome the limitations of a function, PostgreSQL has a procedure that supports transactions. In the procedure, we can start, commit, rollback the transaction. However, the procedure can not return a result set like a table. It can only return the INOUT parameters. Syntax CREATE OR REPLAC...
PostgreSQL , CREATE PROCEDURE , CALL , 增强 , 11 背景 PostgreSQL一直以来都是通过create function来创建函数和存储过程(return void),通过select或者perform(plpgsql内部调用函数)来调用函数。 通过inline code来模拟类似procedure的用法: do language plpgsql $$ declare -- ... begin -- ... end; $$; ...
下列ESQL 程式碼示範如何定義及呼叫 PostgreSQL 儲存程序: DECLARE inputParm CHARACTER; DECLARE outputParm CHARACTER; DECLARE inputOutputParm CHARACTER; SET inputParam = 'Hello'; SET inputOutputParam = 'World'; CALL swapParms(inputParm, outputParm, inputOutputParm); CREATE PROCEDURE swapParms(IN parm1...
简介:AnalyticDB PostgreSQL 7.0 新增了存储过程功能的支持,让用户在使用ADB PG时能够更方便高效地开发业务,并能够更好地兼容Oracle等传统数仓的业务。 背景 在ADB PG6中,函数(Function)可以实现大部分的存储过程功能(SQL stored procedures),我们通常建议用户使用函数来实现存储过程业务,但是通过此方法改造存储过程给用户...