First sorry for my bad english.
I have a large SQL database with 80000 lines.
If I make a "select * from database" command the memory usage of my program is 27MB.

After this querry I send a new "select * from database" command, and the memory usage growth to 33MB, after this a new and new selects growth 39MB, 45MB, 52MB, etc.

Is it a bug? Is it possible to free the memory from previous selects and sore data in memory just the last select? I try destroy sqldb object, but the memory usage after destroy is 52MB too.