File list (Check if you may need any files):
实例193 如何对数据库记录求平均值\DBProgram.bpr
................................\DBProgram.cpp
................................\DBProgram.exe
................................\DBProgram.res
................................\Del1.MB
................................\MainForm.cpp
................................\MainForm.ddp
................................\MainForm.dfm
................................\MainForm.h
................................\MainForm.~cpp
................................\MainForm.~ddp
................................\MainForm.~dfm
................................\MainForm.~h
实例193 如何对数据库记录求平均值