Wie kann ich eine String-Variable in einer Abfrage aufrufen?

Question

public void savedate(String tblname,String time) 
    { 
     ContentValues values = new ContentValues(); 
     values.put(COLUMN_TABLE_NAME, tblname); 
     values.put(COLUMN_TIME, time); 
     String count ="select "+COLUMN_TABLE_NAME+" from "+TABLE_NAME+" where "+COLUMN_TABLE_NAME+ tblname; 
     Cursor mcursor = db.rawQuery(count, null); 
     if(mcursor.getCount()>0) 
     { 
      long s = db.update(TABLE_NAME, values, COLUMN_TIME + "=? ", new String[]{time}); 
      if (s != -1) 

       Toast.makeText(context, "updated, row id: " + s, Toast.LENGTH_SHORT).show(); 
      else 
       Toast.makeText(context, "no change", Toast.LENGTH_SHORT).show(); 
     } 
     else 
     { 
      long s=db.insert(TABLE_NAME, null, values); 
      if(s != -1) 
       Toast.makeText(context, "inserted, row id: " + s, Toast.LENGTH_SHORT).show(); 
      else 
       Toast.makeText(context, "no_change", Toast.LENGTH_SHORT).show(); 

     } 


    } 

dies ist mein Code und dies auf einen Fehler machen, dass:

06-20 11:09:52.258 2001-2348/com.example.mytest.syncapp E/SQLiteLog﹕ (1) no such column: college1 
06-20 11:09:52.260 2001-2348/com.example.mytest.syncapp E/Webservice 1﹕ android.database.sqlite.SQLiteException: no such column: college1 (code 1): , while compiling: select table_name from datesync where table_name= college1 

SQLite Tabellenstruktur:

Answer 1

Schließlich dieser Code ausgeführt wird ......

String count = "select" + COLUMN_TABLE_NAME + "von" + TABLE_NAME + "wo" + COLUMN_TABLE_NAME + "= '" + Tabellenname + "'";

Cursor mcursor = db.rawQuery(count, null);