node.js - Check existing user node-mysql -

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so have following query check if user exists in database

connectdb.query("select account_id registration account_id = '"+ useraccnt +"'", function(err, result, field){      if(result.lenght === 0){         //new user logic }else{       //existing user, redirect page   }         }

so still hit new user logic every time when useraccnt value exists in database? point out if missing something?

actually figured out going wrong, usraccnt variable being read in string rather integer hence query failing. account_id in database set int type


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