Oracle是否具有等效的SQL Server表变量? [英] Does Oracle have an equivalent of SQL Server's table variables?

问题描述

在SQL Server中，您可以声明一个表变量(DECLARE @table TABLE)，该变量是在脚本运行时生成的，然后从内存中删除.

In SQL Server, you can declare a table variable (DECLARE @table TABLE), which is produced while the script is run and then removed from memory.

Oracle是否具有类似功能?还是我坚持使用CREATE/DROP语句来分割硬盘驱动器?

Does Oracle have a similar function? Or am I stuck with CREATE/DROP statements that segment my hard drive?

推荐答案

是.

在 PL/SQL声明块.表变量 也称为索引表或 大批.表变量包含一个 列必须是标量或 记录数据类型以及一个主键 键入BINARY_INTEGER.语法:

Declare TABLE TYPE variables in a PL/SQL declare block. Table variables are also known as index-by table or array. The table variable contains one column which must be a scalar or record datatype plus a primary key of type BINARY_INTEGER. Syntax:

声明 TYPE type_name是表格 (column_type | 变量％TYPE | table.column％TYPE [NOT NULL] 二进制整数索引；

DECLARE TYPE type_name IS TABLE OF (column_type | variable%TYPE | table.column%TYPE [NOT NULL] INDEX BY BINARY INTEGER;

-然后声明这种类型的TABLE变量: variable_name type_name;

-- Then to declare a TABLE variable of this type: variable_name type_name;

-将值分配给TABLE变量: variable_name(n).field_name:= 一些文字"； -``n''是 索引值

-- Assigning values to a TABLE variable: variable_name(n).field_name := 'some text'; -- Where 'n' is the index value

参考: http://www.iselfschooling.com/syntax/OraclePLSQLSyntax.htm

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