Table Difference Checker
Test-Node extension for KNIME Workbench version 3.7.0.v201811021340 by KNIME AG, Zurich, Switzerland
Used in regression tests to test the created data table with a reference data table. The node will compare (depending on the dialog settings) the incoming tables during execute and fails with an exception if the tables are not equal (or do not meet the expectations). In that case the node stays not executed and the test will fail.
In the node's dialog, you can adjust how individual columns are compared. The default is to check for
exact equality. For certain column types you can relax the comparison by using special checkers.
Examples
are numeric column where you may want to use an epsilon or string columns where you may want to
ignore
different line feed characters (Windows vs. Unix). The special checkers are used for the cell
contents
as well as for the column domain (i.e. possible values and bounds).
In case a column is a collection, you can select a checker for the elements' type which is then
applied
to every element in the collection (except the Equality checker which does look into the collection).
In order to configure column, change the checker in the second column and if applicable configure it in the panel below the column table.
Options
- Ignore row IDs
- Select this option if you want to ignore the row IDs of the two tables. Use this option only if you know what you are doing. Row IDs are an integral part of any data table and they should not change during the lifetime of a node because this may break existing workflows.
Input Ports
Best Friends (Incoming)
Database Reader (7 %) 
Column Filter (6 %) Streamable
Sorter (5 %) 
Column Rename (4 %) Streamable
Table Creator (3 %) 
RowID (3 %) Streamable
Domain Calculator (3 %) 
Row Filter (3 %) Streamable
Excel Reader (XLS) (3 %) Streamable
Column Auto Type Cast (2 %) 
Variable to Table Row (2 %) 
Table Reader (2 %) Streamable
Number To String (2 %) 
GroupBy (2 %) 
String Manipulation (2 %) Streamable
Java Snippet (simple) (2 %) 
Insert Column Header (1 %) 
Column Splitter (1 %) Streamable- DB Reader (Labs) (1 %) Streamable
R Snippet (1 %) 
Disturber Node (1 %) 
CSV Reader (< 1 %) - Java Snippet (< 1 %) Streamable
Concatenate (< 1 %) Streamable
Column Resorter (< 1 %) Streamable
Missing Value Column Filter (< 1 %) 
Joiner (< 1 %) 
Missing Value (< 1 %) 
Reference Column Resorter (< 1 %) Streamable
String Replacer (< 1 %) Streamable
Data Generator (< 1 %) Streamable
ORC Reader (< 1 %) Streamable
Spark to Table (< 1 %) 
Bag Of Words Creator (< 1 %) 
Table Editor (JavaScript) (< 1 %) 
GET Request (< 1 %) Streamable- Test Data Generator (< 1 %)
XPath (< 1 %) Streamable
RDKit Descriptor Calculation (< 1 %) Streamable- SQL Script Generator (< 1 %)
- Spark to Table (< 1 %)
SD-to-Smiles (< 1 %) - Smiles Reader (< 1 %)
R Snippet (< 1 %) 
MarvinSketch (< 1 %) 
CMUSphinx4 SR (< 1 %) Streamable
Create Collection Column (< 1 %) Streamable
Split Collection Column (< 1 %) 
Strings to Binary Objects (< 1 %) 
String to URI (< 1 %) 
Try (Data Ports) (< 1 %) 
Variable to Table Column (< 1 %) Streamable
Table Column to Variable (< 1 %) 
Database Connection Table Reader (< 1 %) 
Parameterized Database Query (< 1 %) 
File Reader (< 1 %) Streamable
Loop End (2 ports) (< 1 %) 
Loop End (< 1 %) - Concatenate (Optional in) (< 1 %) Streamable
Auto-Binner (< 1 %) 
String To Number (< 1 %) Streamable
Extract Column Header (< 1 %) 
Constant Value Column (< 1 %) Streamable
Cross Joiner (< 1 %) Streamable
Reference Column Filter (< 1 %) Streamable
Nominal Value Row Filter (< 1 %) Streamable
Row Splitter (< 1 %) Streamable
Reference Row Filter (< 1 %) 
Pivoting (< 1 %) 
Missing Value (Apply) (< 1 %) 
Transpose (< 1 %) 
Ungroup (< 1 %) Streamable
Unpivoting (< 1 %) 
Rule-based Row Filter (< 1 %) Streamable
Rule Engine (< 1 %) Streamable- Rule Engine (Dictionary) (< 1 %) Streamable
CASE Switch Data (End) (< 1 %) 
Cache (< 1 %) 
Extract Table Spec (< 1 %) 
Parquet Reader (< 1 %) Streamable
SDF Reader (< 1 %) 
Empty Table Creator (< 1 %) 
Distance Matrix Calculate (< 1 %) 
H2O to Table (< 1 %) 
Math Formula (< 1 %) Streamable
Math Formula (Multi Column) (< 1 %) StreamableXLS Reader(< 1 %) Deprecated
Document Data Extractor(< 1 %) Deprecated
Term To String (< 1 %) 
ROC Curve (JavaScript) (< 1 %) 
Container Output (Table) (< 1 %) 
JSON to Table (< 1 %) 
Node Adjacency Matrix (< 1 %) 
Python Script (1⇒1)(< 1 %) Deprecated- Python Script (1⇒1) (< 1 %)
- Python Script (2⇒1) (< 1 %)
R Source (Table) (< 1 %) 
Table Difference Checker (< 1 %) 
UNIX Timestamp to Date&Time (< 1 %) Streamable
Date Field Extractor (legacy) (< 1 %) 
Mask Date/Time (legacy) (< 1 %) 
String To XML (< 1 %) 
Remove Empty Rows (< 1 %) Streamable- Transformation Applier (< 1 %)
- Standardize (< 1 %)
HttpRetriever (< 1 %) 
Extract InnerHTML (< 1 %) - Show all 107 recommendations
Best Friends (Outgoing)
- Java Snippet (43 %) Streamable
Interactive Table (13 %) 
Timer Info (10 %) 
Variable Loop End (7 %) 
SSH Connection (3 %) - Variable to Table Row (3 %)
Database SQL Executor (3 %) 
Merge Variables (3 %) - WrappedNode Output (3 %)
DB Connection Table Writer (Labs) (3 %) - Table Difference Checker (3 %)
Quit WebDriver (3 %) - Show all 12 recommendations
Workflows
02_HDFS_and_File_Handling_Example- 017002_HDFS_File_Handling
- HDFS File Handling
- 01_Validating_KNIME_Workflows
- 01_Deploying_and_Validating_models_as_WebServices
Installation
To use this node in KNIME, install Test-Node extension for KNIME Workbench from the following update site: