flex air连接sqlite查询报错：no such table

XML code:
<?xml version="1.0" encoding="utf-8"?>
<mx:WindowedApplication xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
<mx:Script>
<![CDATA[
import flash.data.SQLConnection;
import flash.data.SQLResult;
import flash.events.SQLErrorEvent;
import flash.events.SQLEvent;
import flash.filesystem.File;

public static var dataFile:File=File.applicationStorageDirectory.resolvePath("air.db");
private var conn:SQLConnection=new SQLConnection();
private var createStmt:SQLStatement=new SQLStatement();
private var result:SQLResult=new SQLResult();


private function connectTodataFile():void {
try {
conn.openAsync(dataFile);
createStmt.sqlConnection=conn;
var sql:String="select * from person;";
createStmt.text=sql;
var responder:Responder=new Responder(resultHandler, errorHandler);
createStmt.execute(1, responder);
} catch (error:SQLError) {
tst.text+=error.message + "\n" + error.details;
}
}

private func