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02_​Data_​Merging_​Exercise

Data Merging - Exercise

Exercise 2 for the KNIME Analytics Platform for Data Wranglers course
- Convert a column from number to string
- Concatenate data from two different sources
- Join two database tables (using the DB Joiner node) and read database data into KNIME
- Join two local tables








Exercise 2: Join and ConcatenateIn this exercise you combine data by concatenating and joining tables. 1) Concatenate customer information data from the two different systems into one table 1.1 Convert the "Newsletter" column from number to string in the table from the system 1 (Number to String node) 1.2 Concatenate the customer data from the two systems (Concatenate node) 2) Join the information on the online purchases with the prices of the products 2.1 Join the "TransactionsOnline" and "ProductNrAndPrize" tables directly on the database (DB Joiner node) 2.2 Read the joined table into KNIME (DB Reader node) 3) Add the store location information to each purchase in a store based on the StoreID (Joiner node) Connect to DatabaseProduct ID and PriceTransactions Online Customer InformationSystem 1Store InformationCustomer InformationSystem 2Transactions StoreSQLite Connector DB Table Selector DB Table Selector CSV Reader Excel Reader Table Reader Table Reader Exercise 2: Join and ConcatenateIn this exercise you combine data by concatenating and joining tables. 1) Concatenate customer information data from the two different systems into one table 1.1 Convert the "Newsletter" column from number to string in the table from the system 1 (Number to String node) 1.2 Concatenate the customer data from the two systems (Concatenate node) 2) Join the information on the online purchases with the prices of the products 2.1 Join the "TransactionsOnline" and "ProductNrAndPrize" tables directly on the database (DB Joiner node) 2.2 Read the joined table into KNIME (DB Reader node) 3) Add the store location information to each purchase in a store based on the StoreID (Joiner node) Connect to DatabaseProduct ID and PriceTransactions Online Customer InformationSystem 1Store InformationCustomer InformationSystem 2Transactions StoreSQLite Connector DB Table Selector DB Table Selector CSV Reader Excel Reader Table Reader Table Reader

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Created by: Maarit Laukkanen
Created at: 2019-10-18
On NodePit since: 2023-01-24
Last update: 2024-12-17
Created with KNIME version: v4.4.0
Tags: ETlconcatenatedatabasejoinpreprocessingeducation

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