The relevant code that generates the issue is:
rischi_della_mansione = "GROUP_CONCAT(rischio, ', ')" l = [db.RISCHI_MANSIONE.on( (db.RISCHI_MANSIONE.mansione_ID==db.MANSIONE.id)), db.RISCHI.on( (db.RISCHI.id==db.RISCHI_MANSIONE.rischio_ID)) ] mansioni = db((db.MANSIONE.id>0)).select(db.MANSIONE.mansione, rischi_della_mansione, left=l, groupby=db.MANSIONE.id ) fattori_rischio = SQLTABLE(mansioni, truncate=None, _id="rischi", headers={'MANSIONE.mansione':'MANSIONE', rischi_della_mansione:'FATTORI DI RISCHIO' }, columns=['MANSIONE.mansione', rischi_della_mansione ] ) The traceback screenshot is: <https://lh3.googleusercontent.com/-WMtRONVueqU/WqmeVm7gToI/AAAAAAAABBs/sAGtbWmUkYw5q71s8Q8rjZJH5VE9EY7EQCLcBGAs/s1600/Screenshot.png> Please note that the code is working well on web2py Version 2.14.6-stable+timestamp.2016.05.10.00.21.47 Has anybody found the same issue and solved it? Thank you. -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to web2py+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.