Contact is parent and Case is child and am trying to run the following query.
Contact__c c=[Select Id, Name, (select Name from Case__r ) from Contact__c];

but query is gving me below error.

Didn't understand relationship 'Case__r' in FROM part of query call. If you are attempting to use a custom relationship, be sure to append the '__r' after the custom relationship name. Please reference your WSDL or the describe call for the appropriate names.

i tried same kind of query for my another app it's working. y not here? errrrrrrrrrrrrrrrrr

Am just executing hello world statement.
System.debug('hello world');
developer console not showing any logs.
why?
please help me

Contact is parent and Case is child and am trying to run the following query.
Contact__c c=[Select Id, Name, (select Name from Case__r ) from Contact__c];

but query is gving me below error.

Didn't understand relationship 'Case__r' in FROM part of query call. If you are attempting to use a custom relationship, be sure to append the '__r' after the custom relationship name. Please reference your WSDL or the describe call for the appropriate names.

i tried same kind of query for my another app it's working. y not here? errrrrrrrrrrrrrrrrr

Am just executing hello world statement.
System.debug('hello world');
developer console not showing any logs.
why?
please help me