![]() Instead of the standard 'Customer' field name, it contains an abbreviated version called 'Cust.'īeginning in version 10.5, when you create a new extract, it uses the.hyperformat instead of the. Now suppose a fourth table, 'August2016', is added to the underlying data. The table names are 'May2016,' 'June2016,' and 'July2016.'Ī union of these tables creates the following single table that contains all rows from all tables. You can also create your own calculation or, if possible, modify the underlying data to combine the non-matching fields.įor example, suppose you have the following customer purchase information stored in three tables, separated by month. When field names in the union do not match, fields in the union contain null values.You can merge the non-matching fields into a single field using the merge option to remove the null values.When you use the merge option, the original fields are replaced by a new field that displays thefirstnon-null value for each row in the non-matching fields. Topic 12: Explain how continuous fields are displayed/ Explain the default aggregation for measuresīy default, both field names are present in the Union, but contain several null values!.Topic 11: Use color from the marks card/ Connecting to & Preparing Data/ Create live connections and extracts.Topic 10: Explain the difference between discrete date parts and continuous date values/ Explain when to use a parameter.Topic 9: Explain what kind of information dimensions usually contain/ Create sets by using marks and the data pane.Topic 8: Change data type for a data field/ Create a map using geographic data.Topic 7: Add interactive elements for consumers/ Explain the differences between using live connections versus extracts.Topic 6: Explain what kind of information measures usually contain/ Assign a geographic role to a data field.Topic 5: Create groups by using marks, headers, and the data pane/ Create a chart to show specific values.Topic 4: Configure a dashboard layout and create device-specific dashboards/ Add relationships to a data source.Topic 3: Describe how an aggregated measure changes when dimensions are added to a view/ Explain when to use a join versus a relationship.Topic 2: Explain the difference between dimensions and measures/ Create a data source that uses multiple connections.Topic 1: Change default properties for a data field/ Create a live connection to a data source.
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