Create Variable In Oracle

问题

What is the Oracle equivalent of this MS SQL Server notation?

DECLARE @Variable INT
SET @Variable = 1

回答1:

In PL/SQL, you have a declare block:

declare
    x integer := 1;
    ...
begin
    ...
end;

If you are writing an SQL*Plus script, you use variable to declare a bind variable

variable x integer := 1;

It's also possible to define variables.

回答2:

In PL/SQL:

DECLARE
  a number;
BEGIN
  a := 1;
END;

You can paste this code in SQLPlus to run it.

来源：https://stackoverflow.com/questions/2708888/create-variable-in-oracle