[Zope] [ZOPE} why single quote can't store in gadfly database tables

hi, I found that Single quote ( ' ) cannot be stored in gadfly database table. If I use that as a part of the string in any SQL variable I will get an error. If u have any idea please let me know. thanks bye yours, K.H.Subrahmanyan ( subrahmanyan.kalathur@wipro.com )