How to use the mysql.client.query function in mysql

console.log("OLD ARR");
//              console.log(JSONval);
              var JSONarr = JSON.parse(results[i].JSON); // Turn the JSON String into an Array
              console.log(JSONarr);
              JSONarr.wallid = dest; // change the array to include the new destination
              console.log("NEW ARR");
              console.log(JSONarr);
              JSONval = JSON.stringify(JSONarr); // turn the JSON array back into a string
              // insert the note into the database witha new wallID
              client.query("INSERT INTO `note` VALUES(?,?)", [newGuid, JSONval], callback);
            };

          //create wall
          var wallStr = JSON.stringify({notes: noteGuids, createdAt: new Date().getTime()});
          console.log(noteGuids);
          client.query("INSERT INTO `wall` VALUES(?,?)", [dest, wallStr], callback);
          // return with the dest
          callback();
        }
      ], callback);

return (S4() + S4() + "-" + S4() + "-" + S4() + "-" + S4() + "-" + S4() + S4() + S4());
              }

              var newGuid = guidGenerator(); // get a new GUID
              noteGuids.push(newGuid); // write the note GUID to an array
              var JSONval = results[i].JSON; // JSON contains the WALLID as a STRING
              console.log("OLD ARR");
//              console.log(JSONval);
              var JSONarr = JSON.parse(results[i].JSON); // Turn the JSON String into an Array
              console.log(JSONarr);
              JSONarr.wallid = dest; // change the array to include the new destination
              console.log("NEW ARR");
              console.log(JSONarr);
              JSONval = JSON.stringify(JSONarr); // turn the JSON array back into a string
              // insert the note into the database witha new wallID
              client.query("INSERT INTO `note` VALUES(?,?)", [newGuid, JSONval], callback);
            };

          //create wall
          var wallStr = JSON.stringify({notes: noteGuids, createdAt: new Date().getTime()});
          console.log(noteGuids);
          client.query("INSERT INTO `wall` VALUES(?,?)", [dest, wallStr], callback);
          // return with the dest
          callback();
        }
      ], callback);

function (callback)
    {
      // Get the data from MySQL
      client.query("SELECT * FROM `primarywall`.`wall` WHERE `wallID` = ?", [wallid], callback)
    },

exports.createUser = function (userId, password, fullname, callback)
{  
  var salt = bcrypt.gen_salt_sync(10);
  var hash = bcrypt.encrypt_sync(password, salt);
  
  var userJSON = JSON.stringify({password: hash, fullname: fullname, dateRegistered:new Date().getTime()});

  client.query("INSERT INTO `primarywall`.`user` VALUES(?,?)", [userId, userJSON], function (err, results, fields)
  {
    var success=err == null;
  
    if(err)
    {
      //mysql problem
      console.error("MYSQL_ERROR: " + JSON.stringify(err));
    }
    
    if(callback) callback(success);
  });
}

exports.createDomain = function (domain, owner, callback)
{
  var domainJSON=JSON.stringify({owner:[owner]});

  client.query("INSERT INTO`primarywall`.`domain` VALUES (?,?)", [domain, domainJSON], function (err, results, fields)
  {
    var success=err == null;
  
    if(err)
    {
      //mysql problem
      console.error("MYSQL_ERROR: " + JSON.stringify(err));
    }
    
    if(callback) callback(success);
  });
}

exports.checkIfDomainExists = function (domain, callback)
{
  client.query("SELECT * FROM `primarywall`.`domain` WHERE `domainID` =  ?", [domain], function (err, results, fields)
  {
    var success=err == null;
  
    if(err)
    {
      //mysql problem
      console.error("MYSQL_ERROR: " + JSON.stringify(err));
    }
    
    callback(success, results.length==1);
  });
}

exports.getUserSession = function (sessionID, callback)
{ 

 
  client.query("SELECT JSON FROM `primarywall`.`session` WHERE sessionID = ?", [sessionID], function (err, results, fields)
  {
    var success=err == null;

    var sessionObject = null;
  
    if (success && results.length == 1)
    {
      sessionObject = JSON.parse(results[0].JSON);
    }
    else if(err)
    {
      //mysql problem
      console.error("MYSQL_ERROR: " + JSON.stringify(err));
    }
    
    callback(success, sessionObject);

function(callback)
    {
      client.query("SELECT * FROM `primarywall`.`user` WHERE `UserID` =  ?", [userId], function (err, results, fields)
      {
        if(err)
        {
          callback(err);
          return;
        }
      
        userObj = JSON.parse(results[0].JSON); 
        callback(null);
      });
    }, 
    function(callback)

else
        {
          var sql = "SELECT JSON FROM `primarywall`.`note` WHERE ";
          
          for(var i=0;i

function(callback){
      client.query("SELECT * FROM `wall` WHERE `wallID` = ?", [source], callback);
    },
    //if it exists load it into, else create a empty table entry