Match/Transfer Data Between Two Large MYSQL Tables

Hello Coders I have 2 large mysql tables. Table A has 100,000 rows and Table B has 500,000 rows. *Some* of the data in Table B corresponds to the data in Table A. I need a script that will copy the data from Table B to Table A where there is a match. In otherwords, the script needs to resync the stats in Table B with the content rows in Table A. Normally this wouldn't be aproblem, but due to the size of the tables I need the most efficient solution. This also needs to be a cron script so I can resync the 2 tables every few hours. Please do NOT suggest a table join as this is not possible. Table B is updated too frequently (INSERT,UPDATE,DELETE) and will just lockup if accessed by the live site. If you have an alternative suggestion you are welcome to suggest that. Here is the table structure: **Table A** The live website reads from this table. It includes static data (such as name, date added, owber etc.) and also dynamic data (such as number of downloads, last updated time etc.). Name, Owner, String (unique), Added, Updated, Downloads, Links **Table B **This is where the statistics are stored. The cron script will transfer them from Table B into Table A where the unique string matches. String (unique), Updated, Downloads, Links If you need more info, please just ask. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform php/mysql