psql with option -c fails..

[akp geek <akpgeek@xxxxxxxxx>]

Hi all -

               I am trying to run the psql command the following way and it's failing . Can you please help?

                psql  -d mydb  -c 'update tb_user set accountstatus='A' where userid=123'

ERROR:  column "a" does not exist

LINE 1: ...date tb_user accountstatus=A

Thanks for the help

Regards