Android Database Error does not return

The Below Is my DataBase Activity.The function getAllRecords() never returns any record any idea why?The History_Column_NAME when compiling reads as name.is this normal.Value Stored as SharedPreference works i have checked Any help will be much appriciated

package com.sset.jibin.wakemethere;

import android.app.Activity;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;




    public class DatabaseOperations2 extends SQLiteOpenHelper {


        static int DATABASE_VERSION = 1;
        static String DATABASE_NAME = "data";
        static String TABLE_NAME = "history";
        static String HISTORY_COLUMN_LNG = "lng";
        static String HISTORY_COLUMN_LAT = "lat";
        static String HISTORY_COLUMN_ID = "_id";
        static String HISTORY_COLUMN_NAME = "name";

        private Context mContext;




        public DatabaseOperations2(Context context) {

            super(context, DATABASE_NAME, null, DATABASE_VERSION);
            Log.d("DatabaseHelper", "Database2 constructor");
            mContext = context;
        }

        @Override
        public void onCreate(SQLiteDatabase database) {
            Log.d("DatabaseOP2", "onCreate");
            database.execSQL("CREATE TABLE " + TABLE_NAME +
                    "( " + HISTORY_COLUMN_ID + " integer primary key, " + HISTORY_COLUMN_LNG + " text, " +
                    HISTORY_COLUMN_LAT + " text, " + HISTORY_COLUMN_NAME + " text)");

        }

        @Override
        public void onUpgrade(SQLiteDatabase database, int oldVer, int newVer) {
            Log.d("DatabaseHelper", "onUpgrade");
            database.execSQL("DROP TABLE IF EXISTS " + TABLE_NAME);
            onCreate(database);

        }

        public void saveRecord(String lat, String lng, String name) {
            Log.d("DatabaseHelper", "saveRecord");
            SQLiteDatabase database = this.getWritableDatabase();
            ContentValues contentValues = new ContentValues();
            contentValues.put(HISTORY_COLUMN_LAT, lat);
            contentValues.put(HISTORY_COLUMN_LNG, lng);
            contentValues.put(HISTORY_COLUMN_NAME, name);

            database.insert(TABLE_NAME, null, contentValues);
            close();

        }

        public Cursor getAllRecords() {
            SharedPreferences pref = mContext.getSharedPreferences("lin", 0);
            SharedPreferences.Editor editor = pref.edit();
            String a = pref.getString("KEY", null);          // getting String
            Log.d("test=====>", a);

            SQLiteDatabase database = this.getReadableDatabase();
            return database.rawQuery("SELECT * FROM " + TABLE_NAME + " WHERE " + HISTORY_COLUMN_NAME + " = '" + pref.getString("KEY", null) + "'", null);


        }
    }