pl SQL复合的相关内容

文章 2024-01-02 来自：开发者社区

Oracle PL/SQL 第五章–复合类型

1. 复合类型ORACLE 在 PL/SQL 中除了提供象前面介绍的各种类型外,还提供一种称为复合类型的类型—记录和表。1.1 记录类型记录类型类似于C语言中的结构数据类型，它把逻辑相关的、分离的、基本数据类型的变量组成一个整体存储起来，它必须包括至少一个标量型或RECORD数据类型的成员，称作PL/SQL RECORD的域(FIELD)，其作用是存放互不相同但逻辑相关的信息。在使用记录数据类型....

阿里云文档 2023-12-14

PolarDBPostgreSQL版PL/SQL的基本语句_云原生数据库PolarDB PostgreSQL版（兼容Oracle）_云原生数据库 PolarDB(PolarDB)

本文介绍了基本语句的相关内容。

阿里云文档 2023-12-14

PolarDBPostgreSQL版PL/SQL的声明信息_云原生数据库PolarDB PostgreSQL版（兼容Oracle）_云原生数据库 PolarDB(PolarDB)

本文介绍了PL/SQL的声明信息。

阿里云文档 2023-03-21

如何创建PolarDBO引擎的PL/SQL子类型

PolarDB PostgreSQL版（兼容Oracle）支持用户定义的PL/SQL子类型和（子类型）别名。子类型是具有一组可选约束的数据类型，这些约束限制可以存储在该类型的列中的值。适用于该子类型所基于的类型的规则仍然适用，但您可以使用其他约束限制该类型中存储值的精度或小数位数。

文章 2022-10-13 来自：开发者社区

Oracle数据库PL/SQL学习笔记三——复合数据的定义

--自定义记录recorddeclare type demo_record_type is record( id number default 1, value varchar2(10) := 'one' ); demo demo_record_type; begin dbms_output.put_line('['||demo.id||']['||demo.value|...

阿里云文档 2022-03-04

使用DBMS_AQ包中的存储过程添加/删除消息以及注册或注销PL/SQL回调存储过程

您可以使用DBMS_AQ包中的存储过程添加消息到队列、从队列中删除消息、注册或注销PL/SQL回调存储过程。

文章 2022-02-16 来自：开发者社区

PL/SQL复合变量

复合变量可以将不同数据类型的多个值存储在一个单元中。由于复合类型可以由用户自己根据需要定义其结构，所以复合数据类型也称为自定义数据类型。在PL/SQL中，使用%TYPE声明的变量类型与数据表中字段的数据类型相同，当数据表中字段数据类型修改后，PL/SQL程序中相应变量的类型也自动随之改变。如EMP表中有一个ENAME字段，其数据类型为VARCHAR2(30),声明变量v_name用来存放E.....

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