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In datatable select the field using checkbox & show them on comand button c;ick event page

hi I m new to apex code development

plz help if you can


What exactly is you requirement?

Do you want to know how to query check box field? it can be done as below  say your checkbox field is Opt_out__c and you wish you extract those fields for whom the Opt_out_c field is set to true, then your query will be as under:-

Select id, Name, Opt_out__c from Contact where  Opt_out__c ='true'


Second part of your question is not clear please do elaborate.