Question

Everything was working fine before I upgraded my mysql version on server.

But now it’s giving error and shows query failure. I have changed nothing in code.

SELECT id,frequency,speed FROM signal where active='Y'

It’s showing error in from clause.Why this happening ?

Answer 1

Seems you upgraded in Mysql5.5 and SIGNAL is new reserved keyword in Mysql5.5.
Escape your table name signal with backticks(`) in query.

Try below :

 SELECT id,frequency,speed FROM `signal` where active='Y'