# Chapter 2 / Exercise 3

**URL:** <https://forum.knime.com/t/chapter-2-exercise-3/24119>\
**Category:** KCH Workflows\
**Created:** [May 26, 2020, 4:39pm UTC](https://forum.knime.com/t/chapter-2-exercise-3/24119 "2020-05-26T16:39:28Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Hub](https://forum-cdn.knime.com/user_avatar/forum.knime.com/hub/32/5438_2.png) [@Hub](https://forum.knime.com/u/Hub)\
**Post date:** [May 26, 2020, 4:39pm UTC](https://forum.knime.com/t/chapter-2-exercise-3/24119/1 "2020-05-26T16:39:28Z")

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The goal of this exercise is to practice with the Parameterized DB Query Reader node for looping purpose. Extract make, nr\_doors, length, width, and engine\_type from table cars85 in KCBBook.sqlite DB, prepared in exercise1. Like in the previous exercise, pre-process the dataset to keep only bmw and audi cars. This time though, unlike exercise2, use a Parameterized DB Query Reader node instead of SQL queries and database filter nodes.

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This is a companion discussion topic for the original entry at [https://kni.me/w/T5GwPA9adZsaEugv](https://kni.me/w/T5GwPA9adZsaEugv)