Icon

07 Join and Concatenate

05 Join and Concatenate
Exercise: Joiner1) Read the adult.csv, adult_education.table, and adult_income.xlsx files by executing the reader nodes2) Join the adult.csv data with the adult_education.table data. Use the ID column as the joining column. Useinner join. 3) Join the adult_income.xlsx data with the joined table. Apply the same settings. 4) What is the number of rows and columns in the first joined table? Cols: 15 Rows: 32549And in the second? Cols: 16 Rows: 32549Were any rows discarded in the joining operations?No Exercise: Concatenate1) Execute the Table Reader nodes below. The adult_joined.table file contains the records for all countriesbut Scotland. The records for Scotland are stored in a separate adult_scotland.table file.2) Concatenate the two tables into one3) Which column is missing in one of the tables?adult_scotland is missing: id column If you want to include this column in your concatenated table, do you select union or intersection of columns?union Read data adult.csvRead data adult_education.tableadult_joined.tableadult_scotland.tableRead dataadult_income.xlsx File Reader Table Reader Joiner Joiner Table Reader Table Reader Concatenate Excel Reader Exercise: Joiner1) Read the adult.csv, adult_education.table, and adult_income.xlsx files by executing the reader nodes2) Join the adult.csv data with the adult_education.table data. Use the ID column as the joining column. Useinner join. 3) Join the adult_income.xlsx data with the joined table. Apply the same settings. 4) What is the number of rows and columns in the first joined table? Cols: 15 Rows: 32549And in the second? Cols: 16 Rows: 32549Were any rows discarded in the joining operations?No Exercise: Concatenate1) Execute the Table Reader nodes below. The adult_joined.table file contains the records for all countriesbut Scotland. The records for Scotland are stored in a separate adult_scotland.table file.2) Concatenate the two tables into one3) Which column is missing in one of the tables?adult_scotland is missing: id column If you want to include this column in your concatenated table, do you select union or intersection of columns?union Read data adult.csvRead data adult_education.tableadult_joined.tableadult_scotland.tableRead dataadult_income.xlsx File Reader Table Reader Joiner Joiner Table Reader Table Reader Concatenate Excel Reader

Nodes

Extensions

Links

Download

To use this workflow in KNIME, download it from the below URL and open it in KNIME:

Download Workflow
Created by: Maarit Laukkanen
Created at: 2020-04-20
On NodePit since: 2021-06-18
Last update: 2024-11-18
Created with KNIME version: v4.3.2
Tags: joinconcatenate

Deploy, schedule, execute, and monitor your KNIME workflows locally, in the cloud or on-premises – with our brand new NodePit Runner.

Try NodePit Runner!