SQLiteException：附近「功能」：synxtax錯誤：，在編譯

Question

package sg.edu.rp.c345.a02.corporatecall; 

import android.content.ContentValues; 
import android.content.Context; 
import android.database.Cursor; 
import android.database.SQLException; 
import android.database.sqlite.SQLiteDatabase; 
import android.database.sqlite.SQLiteOpenHelper; 
import android.database.sqlite.SQLiteDatabase.CursorFactory; 

public class DbAdapter { 
    // Database properties 
    private static final String DATABASE_NAME = "corporatecall.db"; 
    private static final String DATABASE_TABLE_NAME = "contacts"; 
    private static final int DATABASE_VERSION = 1; 

    public static final String KEY_CONTACT_ID = "_id"; 
    public static final String KEY_CONTACT_NAME = "name"; 
    public static final String KEY_CONTACT_FUNCTION = "function"; 
    public static final String KEY_CONTACT_COMPANY = "company"; 
    public static final String KEY_CONTACT_PHONE = "phone"; 

    // Create script 
    private static final String DATABASE_CREATE_FAV = "create table " 
      + DATABASE_TABLE_NAME + " (" + KEY_CONTACT_ID 
      + " INTEGER PRIMARY KEY AUTOINCREMENT, " + KEY_CONTACT_NAME 
      + " text not null, " + KEY_CONTACT_FUNCTION + " text not null, " 
      + KEY_CONTACT_COMPANY + " text not null, " + KEY_CONTACT_PHONE 
      + " text not null);"; 

    private SQLiteDatabase db; 
    private final Context context; 
    private MyDbHelper myDbHelper; 

    // constructor create the wrapper to open and close the db 
    public DbAdapter(Context _context) { 
     context = _context; 
     myDbHelper = new MyDbHelper(context, DATABASE_NAME, null, 
       DATABASE_VERSION); 
    } 

    public DbAdapter open() throws SQLException { 
     db = myDbHelper.getWritableDatabase(); 
     return this; 
    } 

    public void close() { 
     db.close(); 
    } 

    // Insert new entry to the database or update if the task exist in the 
    // database 

    public long insertContact(String _name, String _function, String _company, 
      String _phone) { 
     Cursor c = db.query(DATABASE_TABLE_NAME, new String[] { KEY_CONTACT_ID, 
       KEY_CONTACT_NAME, KEY_CONTACT_FUNCTION, KEY_CONTACT_COMPANY, 
       KEY_CONTACT_PHONE }, KEY_CONTACT_NAME + "=\"" + _name + "\"" 
       + KEY_CONTACT_FUNCTION + "=\"" + _function + "\"" 
       + KEY_CONTACT_COMPANY + "=\"" + _company + "\"" 
       + KEY_CONTACT_PHONE + "=\"" + _phone + "\"", null, null, null, 
       null); 

     int count = c.getCount(); 
     if (count > 0) { 
      c.moveToFirst(); 
      int idColumn = c.getColumnIndex(KEY_CONTACT_ID); 
      long id = c.getLong(idColumn); 
      c.close(); 
      return updateContact(id, _name, _function, _company, _phone); 
     } else { 
      c.close(); 
      ContentValues contentValues = new ContentValues(); 
      contentValues.put(KEY_CONTACT_NAME, _name); 
      contentValues.put(KEY_CONTACT_FUNCTION, _function); 
      contentValues.put(KEY_CONTACT_COMPANY, _company); 
      contentValues.put(KEY_CONTACT_PHONE, _phone); 

      Long test = db.insert(DATABASE_TABLE_NAME, null, contentValues); 

      return test; 
     } 
    } 

    // remove entry from the database based on the task name 
    public boolean removeContact(String _name) { 
     return db.delete(DATABASE_TABLE_NAME, KEY_CONTACT_NAME + "='" + _name 
       + "'", null) > 0; 
    } 

    // retrieve all the entries in the database 
    public Cursor getAllContacts() { 
     return db.query(DATABASE_TABLE_NAME, new String[] { KEY_CONTACT_ID, 
       KEY_CONTACT_NAME, KEY_CONTACT_FUNCTION, KEY_CONTACT_COMPANY, 
       KEY_CONTACT_PHONE }, null, null, null, null, null); 
    } 

    // retrieve all the entries in the database 
    public Cursor getAllContactsSearchName(String name) { 
     return db.query(DATABASE_TABLE_NAME, new String[] { KEY_CONTACT_ID, 
       KEY_CONTACT_NAME, KEY_CONTACT_FUNCTION }, KEY_CONTACT_NAME 
       + " LIKE '%" + name + "%'", null, null, null, null); 
    } 

    public int updateContact(long _id, String _name, String _function, 
      String _company, String _phone) { 
     ContentValues contentValues = new ContentValues(); 
     contentValues.put(KEY_CONTACT_NAME, _name); 
     contentValues.put(KEY_CONTACT_FUNCTION, _function); 
     contentValues.put(KEY_CONTACT_COMPANY, _company); 
     contentValues.put(KEY_CONTACT_PHONE, _phone); 

     return db.update(DATABASE_TABLE_NAME, contentValues, KEY_CONTACT_ID 
       + "=" + _id, null); 
    } 

    public boolean removeAllContacts() { 
     return db.delete(DATABASE_TABLE_NAME, null, null) > 0; 
    } 

    private static class MyDbHelper extends SQLiteOpenHelper { 

     public MyDbHelper(Context context, String name, CursorFactory factory, 
       int version) { 
      super(context, name, factory, version); 
     } 

     @Override 
     // Only gets called if the database does not exist on the phone 
     public void onCreate(SQLiteDatabase _db) { 
      _db.execSQL(DATABASE_CREATE_FAV); 

     } 

     public void onUpgrade(SQLiteDatabase _db, int _oldVersion, 
       int _newVersion) { 
      // Drop old one 
      _db.execSQL("DROP TABLE IF EXISTS " + DATABASE_CREATE_FAV); 
      // Create new one 
      onCreate(_db); 
     } 
    } 
} 

每當我嘗試添加的東西到使用insertContact數據庫中，有註定是一個SQLiteException。

SQLiteException：附近 「功能」：synxtax錯誤：，在編譯：

如何解決這個問題？儘快獲得幫助。

Answer 1

函數是一個特殊的SQLite關鍵字。你必須把它放在字符中（右撇號）。在這裏看到的細節：https://www.sqlite.org/lang_keywords.html