Edinelson Lemes - 2014-01-09

My table have one field numeric (in delphi TBCDField) and when go through records using this field in calculation only with TSQLQuery occur an error about Acess Violation. but whether I use TSQLQuery+DataSetProvider+ClientDataSet this error not happen.

Do you have any sugestion?

Environment:

Windows 7 32
Open Dbexpress Ver. 2012 0724
Delphi 2007 win32
Database: PervasiveSQL V8

Thanks