Android sqlife count

//already data? public boolean isAlreadyNote(String user_id){ Cursor mCount= mDb.rawQuery("select count(*) from "+ TABLE_NAME +" where "+ID+"='" + user_id + "'", null); mCount.moveToFirst(); int count= mCount.getInt(0); mCount.close(); if(count <= 1){ //already return true; }else{ //not return false; } }