servicenow glide query In , faster delete

 var C_LIST = [

'A', 'B'

];

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var gr = new GlideRecord("test");

gr.addQuery('u_event_type', 'IN', C_LIST.join());

-------------------

var NameList = ['A', 'B']

        gr.addEncodedQuery('column_name' + NameList);

       gr.query()

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faster delete

        gr.query();

        gr.setWorkflow(false);

        gr.deleteMultiple();

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add or condition 

            gr.addOrCondition('name, 'A');