In Oracle, about 9i and 10g,11g different child query bracket usage

Source: Internet
Author: User
Tags join

There is such a view, probably as follows:

This view can only be compiled successfully in a 10g,11g environment and cannot be compiled in 9i environments.

The code is as follows Copy Code
Select a.*,b.*
From (select Id,name from a)
Left join B on a.id=b.id;

The view can be compiled successfully in a 9i,10g,11g environment.

The code is as follows Copy Code
Select a.*,b.*
From (select Id,name from a)
Left join B on a.id=b.id;

Details of the reason is not clear, for guidance.

Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.