On Fri, 25 Sep 2009 17:05:13 +0200, Mirko Pace wrote about UPDATE statement with syntax error doesn't raise a warning?: >I've ran an update statement like this (obviously wrong, I know!): Not so obvious. >update my_table > set boolean_field = true AND > my_notes = 'something' >where id in > (select id from my_table order by random() limit 4000); > >in my psql client and I had a "UPDATE 4000" result but, correctly, >anything was changed in my_table. I presume you meant "nothing" rather than "anything". >So... why pg didn't raise a warning about syntax issue? If we add some redundant parentheses, the SET clause becomes: SET boolean_field = (true AND my_notes = 'something') As you can see, this is a valid Boolean expression. There is no syntax error. It just doesn't mean what you wanted. -- Regards, Dave [RLU #314465] ======================================================================= david.w.noon@xxxxxxxxxxxx (David W Noon) ======================================================================= -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
