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RE: Oracle vs. MySQL

From: Orr, Steve <>
Date: Wed, 01 Aug 2001 10:09:35 -0700
Message-ID: <>

Yeah, how about basic transaction support? Table locking is a problem when the database/web site starts to experience a modest number of hits. We migrate customers from MySQL to Oracle when there are performance problems and they instantly disappear with Oracle.

MySQL is not ANSI SQL compliant because it uses a subset of "standard SQL." In effect, MySQL is it's own unique and distinct dialect. That's why it's called "MySQL" and it's developers admit that they left out certain ANSI SQL functionality for the sake of simplicity and speed in a non-multi-user non-transactional environment. MySQL may be "open source" but it is not truly "standards-based" since it is not ANSI SQL compliant. In essence MySQL is a subset SQL dialect which serves as an interface to file systems and is not a "pure" implementation of a relational database. The following features which are lacking from MySQL: 1) no support for stored procedures and triggers; 2) no support for subqueries; 3) incomplete support for database transactions; 4) no support for referential integrity via database level foreign key constraints. (Some of these features are database vendor "extenstions" to ANSI SQL but they are common to most other real database engines whether commercial or open source.)

Notice the "Other features" section at the bottom of the crash-me link... "Atomic updates" are not supported. Transaction support seems to be an afterthought and MySQL does not pass the ACID test. Check out:

If you don't have to update your data then MySQL may have its place.

Humbly yours,
Steve Orr

-----Original Message-----
Sent: Wednesday, August 01, 2001 10:48 AM To: Multiple recipients of list ORACLE-L

The comparisons look good for MySQL...
not bad for others, but better for
mySQL than some comments by some
folks on the list would have led me
to believe.

Anyone here have major gripes about
mySQL that oracle solved?

-----Original Message-----
Sent: Wednesday, August 01, 2001 12:01 PM To: Multiple recipients of list ORACLE-L

Interesting site...

Since I am not familiar with some of the other databases, are all the ones listed there 3 versions old or just Oracle? I noticed DB2 was 2 versions old.

> -----Original Message-----
> From: Dwayne Cox []
> Sent: Wednesday, August 01, 2001 9:56 AM
> To: Multiple recipients of list ORACLE-L
> Subject: Re: off topic--oracle Vs ms sql
> Try this site...
> On Mon, 30 Jul 2001 13:29:28 -0800
> "Ravindra Basavaraja" <> wrote:
> > Does anyone have any doc or links that compares oracle and ms sql.
> >
> > Also what are the equivalent data types in ms sql for oracle's lobs.
> >
> > Thanks
> > Ravindra

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Author: Orr, Steve

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Received on Wed Aug 01 2001 - 12:09:35 CDT

Original text of this message