Phong Nguyen <[EMAIL PROTECTED]> wrote on 09/15/2005 10:56:57 AM: > All, > > Could you please tell us what are the differences > between ORACLE SQL plus and MYSQL SQL? We developed > application using ColdFusion with Oracle. Now I like > to point my application to mysql database. How do I > fix my application to work with Mysql? > > Thankyou >
You asked basically two questions: a) what are the differences between ORACLE SQL plus and MYSQL? First, I must refer you to the official MySQL documentation. Everything you will need to know to answer your question will be in there. I am assuming that you already understand Oracle SQL Plus, as you are using it. http://dev.mysql.com/doc/mysql/en/index.html It does not do a point-by-point comparison between the two products you list but if you understand Oracle and read this to see how you form the MySQL equivalent to each Oracle statement you use (you can skip around to read just the parts you need then come back and get the rest later), the differences will be readily apparent. If you do not already understand your Oracle back-end, you have a serious disadvantage to making this a smooth transition. b) How do I fix my application to work with Mysql? The simple answer is: Change your website's code to use a compatible MySQL client library and modify all SQL statements to be MySQL compatible. Exactly how you do that with the environment you specified, I don't have a clue. I looked at Cold Fusion once (several years ago) so how that tool helps to automate the development of the data storage and retrieval process is beyond me. How much you need to change your SQL statements depends on how they are with MySQL already. One well-known point on how MySQL and Oracle differ is in how to define a JOIN in a SQL statement. MySQL works best if you use the explicit "[INNER|LEFT|RIGHT] JOIN ... ON ..." format. AFAIK, Oracle does not support this syntax. I wish you well. If you have any specific translation issues that you cannot resolve by reading the manual, please bring it back to the list. I am sure someone will be able to help. Shawn Green Database Administrator Unimin Corporation - Spruce Pine
