Hi, > However I have another problem which I need your ideas.
It's better to create a new thread when you want to discuss a new problem. > I have a table where prices for a few stock tickers are inserted. I have > another temp table which holds the prices for the max trade date. I have a > trigger which updates the temp table when there is a an insert into the main > prices table. This makes sure that I have the latest data for all the > tickers in the temp table. > > Now I have a column called pricechange. I would like to calculate the > difference between pevious close price and today's close price in that > column. So theoretically speaking after the insert of new prices in the > prices table and I would like a trigger that will update the pricechange > with the price difference. > But I am unable to do it. > > DBD::mysql::st execute failed: Can't update table 'tbl_prices' in stored > functio > n/trigger because it is already used by statement which invoked this stored > func Welcome to MySQLs half-assed trigger implementation ;-) Can you do this from the first trigger that updates the temp table (inserts the items?) instead? Martijn Tonies Database Workbench - tool for InterBase, Firebird, MySQL, NexusDB, Oracle & MS SQL Server Upscene Productions http://www.upscene.com My thoughts: http://blog.upscene.com/martijn/ Database development questions? Check the forum! http://www.databasedevelopmentforum.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
