I am new in salesforce, I have a problem with Database.query. Its not returning the data to apex class, But while i am using query editor its showing the correct data. My query is

List<CM_Group__c> e = Database.query('SELECT 
        CM_Skill_Level__c,CM_Start_Date__c,Name FROM CM_Employee__c where 
        CM_Start_Date__c != null');
        System.debug(e);

when iam checking with debug log it showing empty. But when i am using query editor it showing the below result 

Any help would be appreciatable
 

I am new in salesforce, I have a problem with Database.query. Its not returning the data to apex class, But while i am using query editor its showing the correct data. My query is

List<CM_Group__c> e = Database.query('SELECT 
        CM_Skill_Level__c,CM_Start_Date__c,Name FROM CM_Employee__c where 
        CM_Start_Date__c != null');
        System.debug(e);

when iam checking with debug log it showing empty. But when i am using query editor it showing the below result 

Any help would be appreciatable