Check if address is inside KML polgyon google sheets

code.gs

// replace with your fusion table's id (from File > About this table)
var TABLE_ID = 'xxxxxxxxxx';

// first row that has data, as opposed to header information
var FIRST_DATA_ROW = 2;
var FIRST_DATA_COLUMN = 11;
var LAT_COLUMN = 1;
var LNG_COLUMN = 2;
var SA2_COLUMN = 6;
var SA3_COLUMN = 7;

/**
 * Uses a lat and lng data in google sheets to check if an address is within a kml polygon 
 * in a list of KML polygons in fusion (in this case ABS/ASGC SA2 and SA3 regions, but could be any polygon) 
 * the function then stores the ID/name of the relevant polygon in google sheets 
 * I could check this data in realtime as I render maps, but as it doesn't changed, figure its better to just record
 * which polygon each address pertains to so its quicker and easier to search (in particular it mades it easier to write a query
 * which identifies all the address within multiple polygons)
 * in this case I had 3000 rows so it exceeded maximum execution times, so I just updated the first data row a couple of times
 * when the execution time exceeded.
 */
function updateSA2ID() {
  var tasks = FusionTables.Task.list(TABLE_ID);  
  var sqlResponse = '';
  
  // Only run if there are no outstanding deletions or schema changes.
  if (tasks.totalItems === 0) {
    var sheet = SpreadsheetApp.getActiveSheet();
    var latLngData = sheet.getRange(FIRST_DATA_ROW, FIRST_DATA_COLUMN, sheet.getLastRow(), sheet.getLastColumn());
    
      i = 1;
    // Loop through the current current sheet
    for (i = 1; i <= latLngData.getNumRows(); i++) {      
      
      // cross reference to Fusion table
      lat = latLngData.getCell(i,LAT_COLUMN).getValue();
      lng = latLngData.getCell(i,LNG_COLUMN).getValue();
            
      sqlString = "SELECT 'SA2 Code', 'SA3 Code'  FROM " + TABLE_ID + " WHERE ST_INTERSECTS(geometry, CIRCLE(LATLNG(" + lat + ", " + lng + "),1)) ";      
      //Browser.msgBox('Lat ' + lat + ' Lng ' + lng + '; ' + sqlString, Browser.Buttons.OK);
      sqlResponse = FusionTables.Query.sql(sqlString);
      //Browser.msgBox('SQL Response ' + sqlResponse, Browser.Buttons.OK);

      latLngData.getCell(i,SA2_COLUMN).setValue(sqlResponse.rows[0][0]); // set SA2
      latLngData.getCell(i,SA3_COLUMN).setValue(sqlResponse.rows[0][1]); // set SA3     

    }
      
  } 
  else {
    Logger.log('Skipping row replacement because of ' + tasks.totalItems + ' active background task(s)');
  }
};