Consider the following code snippet to query SQLite database:
String[] result_columns = new String[] {KEY_ID, COL1, COL2};
Cursor allRows = myDatabase.query(true, DATABASE_TABLE, result_columns, null, null, null, null, null, null);
Which of the following prints out the values of COL1 column correctly if the result is not empty?
To print the values of the COL1 column correctly, we should retrieve the value at index 1 since the column array is defined as {KEY_ID, COL1, COL2}. Before accessing the data, we need to ensure that the Cursor moves to the first row. Therefore, using `if (allRows.moveToFirst()) { do { System.out.println(allRows.getString(1)); } while (allRows.moveToNext()); }` ensures that we start from the first row and iterate through all rows, printing the values of the COL1 column correctly.
A. if (allRows.moveToFirst()) { do { System.out.println(allRows.getString(1)); } while (allRows.moveToNext()); }