表X已经存在，使用Create view X as - MySql

Question

我在做：

create view WritersCouples as
select researcher.serial_number as S1, researcher.firstname as S2
from researcher, researcher as rs
where researcher.serial_number <> rs.serial_number;

我收到以下错误：

Error Code: 1050. Table 'WritersCouples' already exists

我在mySql上使用工作台

谢谢！

Answer 1

您是否已创建视图？或者你已经有一个名为WritersCouples的表？

你可以试试这个：

create or replace view WritersCouples as
select researcher.serial_number as S1, researcher.firstname as S2
from researcher, researcher as rs
where researcher.serial_number <> rs.serial_number;

如果视图已经存在，那将取代视图。

Answer 2

如果视图已存在，请添加OR REPLACE子句：

create OR REPLACE view WritersCouples as
select researcher.serial_number as S1, researcher.firstname as S2
from researcher, researcher as rs
where researcher.serial_number <> rs.serial_number;

Answer 3

添加以下内容：

create or replace view myview
as
select ....