Q

What are the differences between SQL-89, SQL-92, and SQL-99?

Could you please tell me, in brief, the differences between SQL-89, SQL-92 and SQL-1999, and whether Oracle and...

SQL Server fully adhere to SQL-1999?


A full list of the differences between SQL-89, SQL-92, and SQL-99 (a.k.a. SQL1, SQL2, and SQL3) cannot really be summed up in brief –- many changes occurred between each version. However, backwards-compatibility was stressed with each release, and code that worked against SQL-89 should still work with SQL-99.

The most important changes between SQL-89 and SQL-92, in my opinion, were modifications to the join syntax, specifically the addition of the OUTER JOIN clause.

SQL-99 really focused on the business analytics side of things, with additions such as Common Table Expressions and the SQL/PSM standard for defining Java-based modules. SQL/PSM (Persistent Stored Module) was actually added to SQL-92 in 1996, but is considered to be part of the SQL-99 standard.

Both SQL Server and Oracle do support parts of SQL-99 -– but neither of them supports the entire standard.

For more information on the ANSI SQL Standard, I recommend picking up a copy of A Guide to the SQL Standard (4th Edition) by C.J. Date and Hugh Darwen (Addison-Wesley Professional, 1996).

This was last published in May 2005

Dig Deeper on SQL-Transact SQL (T-SQL)

PRO+

Content

Find more PRO+ content and other member only offers, here.

Have a question for an expert?

Please add a title for your question

Get answers from a TechTarget expert on whatever's puzzling you.

You will be able to add details on the next page.

Start the conversation

Send me notifications when other members comment.

By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Please create a username to comment.

-ADS BY GOOGLE

SearchBusinessAnalytics

SearchDataCenter

SearchDataManagement

SearchAWS

SearchOracle

SearchContentManagement

SearchWindowsServer

Close