更新查询在Android Sqlite中不起作用

Question

My Java code Update Data base Table

String qq="UPDATE ChallanItems SET Recieve ="+str+" WHERE ItemNo = "+code;
                    Log.d("Qry", qq);
                     myDbHelper.updatequery(qq);

updatequery method

public void updatequery(String qry)
    {
        Cursor c = myDataBase.rawQuery(qry, null);


        Log.d("Up", ""+c.getCount());
    }

When i updated Data base the count return 0 and table not updated

I am using this Also but not work

String qq="UPDATE ChallanItems SET Recieve ="+str+" WHERE ItemNo = "+"'"+code+"'";

Please Help Me how i can fix this problem

Thanks In Advance

Answer 1

Use execSQL() for such SQL and not rawQuery() .

rawQuery() just compiles the SQL but does not run it. You'd need to call one of the move...() methods on the returned Cursor to execute a step of the compiled SQL program.

execSQL() both compiles and runs the SQL program.

There's also possibly a syntax problem with your literals - use parameters ie ? placeholders in SQL and String[] bind arguments to be safe.

Answer 2

try to use this:

ContentValues values = new ContentValues();
values.put("Recieve", str);
db.update("ChallanItems", values2, "ItemNo = ?", new String[] { code });

Answer 3

To update sqlite query change

 Cursor c = myDataBase.rawQuery(qry, null);

to this

myDataBase.execSQL(qry);