Hi. I think innodb will split these into many small pieces and then merge them to execute.
On Thu, Jun 18, 2009 at 1:52 PM, Krishna Chandra Prajapati < prajapat...@gmail.com> wrote: > Hi guys, > > On MIS (management information system) server we have 16GB of physical > memory. 10GB has been allocated to innodb_buffer_pool_size. Database size > is > around 500GB and some tables contains 600millions records. > > my question is if innodb index_length(25GB) is greater than > data_length(20GB). How innodb manage and execute (select query) the join > between the bigger table which contains 500millions and 600millions > records. > Although innodb_buffer_pool has been allocated only 10GB. > > Any response is highly appreciated. > Thanks in advance. > > Thanks, > Krishna > -- David Yeung, MySQL Senior Support Engineer, Sun Gold Partner. My Blog:http://yueliangdao0608.cublog.cn
