query_string=0x2adbf08"create or replace function func_test(pi_v1 in int,pi_v2 varchar,pio_v3 inout varchar,po_v4 out int,po_v5 out varchar)\nreturns record\nas\n$$\ndeclare\nbegin\nraise notice 'pi_v1 := %,pi_v2 := %,pi_v3 :="...) at postgres.c:1215#80x00000000008f0b...
To replace the current definition of an existing function, use CREATE OR REPLACE FUNCTION. It is not possible to change the name or argument types of a function this way (if you tried, you would actually be creating a new, distinct function). Also, CREATE OR REPLACE...
Let's learn how triggers are created in PostgreSQL. How to Create a Trigger in PostgreSQL? Following are the steps that we need to follow to create a trigger in Postgresql: First, We create a “trigger function” using the CREATE FUNCTION command. Second, we use the CREATE TRIGGER statemen...
Only the functions compatible with PostgreSQL or those with thePACKAGEattribute can be overloaded. AfterREPLACEis specified, a new function is created instead of replacing a function if the number of parameters, parameter type, or return value is different. You can use theSELECTstatement to specify...
STRICT、LEAKPROOF、PARALLEL、COST、ROWS 和 SET 关键字可以为PolarDB PostgreSQL版(兼容Oracle)提供扩展功能,但 Oracle 不支持这些关键字。 示例 函数emp_comp 接受两个数字作为输入并返回计算值。SELECT 命令说明函数的使用方式。 CREATE OR REPLACE FUNCTION emp_comp ( p_sal NUMBER, p_comm NUMBER ) RETURN NUM...
PostgreSQL 通过SQL获取建表语句实现 show create table 有scheme参数 创建函数 CREATEORREPLACEFUNCTIONshow_create_table( in_schema_namevarchar, in_table_namevarchar)RETURNStextLANGUAGEplpgsql VOLATILEAS$$DECLARE-- the ddl we're buildingv_table_ddl text;-- data about the target tablev_table_oidint;...
(函数重载是PolarDB PostgreSQL版(兼容Oracle)的一项功能,重载已存储的独立函数这一功能与 Oracle 数据库不兼容。) 要更新现有函数的定义,请使用 CREATE OR REPLACE FUNCTION。无法以此方式更改函数的名称或参数类型(如果您尝试过此方式,实际上创建的是一个新的不同函数)。此外,CREATE OR REPLACE FUNCTION 不会让您...
Creating a stored procedure for a specific task has many advantages, including extending the functionality of your Azure for PostgreSQL database. Use a stored procedure when you want to:Develop and test complex code in one place, then call it where needed. Execute code eff...
简介:PostgreSQL 动态表复制(CREATE TABLE AS & CREATE TABLE LIKE) 前言 项目中有表复制的需求,而且是动态复制,即在存储过程里根据参数数组的值循环复制n张结构(约束、索引等)等一致的一组表,PostgreSQL提供了两种语法来进行表复制,分别是: CREATE TABLE AS ...
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...