Tableau Features and Optimization Questions
Addresses advanced Tableau capabilities and performance tuning for dashboards and server deployments. Topics include calculated fields, parameters, table calculations, and level of detail expressions with when to use fixed, include, and exclude forms. Covers optimization strategies for Tableau workbooks and Tableau Server such as extract management, efficient data sources, query reduction, dashboard best practices, and row level security implementation. Also includes monitoring and tuning of server resources and extract refresh strategies to ensure responsive analytics at scale.
MediumTechnical
66 practiced
Write a Tableau calculation to implement a Top N by Sales within each Region, where N is controlled by a parameter. Describe how you'd use that calculation as a filter to show only Top N items per Region while preserving the Region headers and totals.
HardTechnical
72 practiced
A dashboard's SQL queries include a TOP 1 per group pattern implemented via Tableau nested LODs; the database is optimized for window functions. Rewrite the logic to use a single database-side window function (SQL example) and explain performance benefits.
MediumTechnical
63 practiced
A business user reports inconsistent numbers between Tableau and their Excel exports. Describe an investigation plan to find the cause (data model, aggregations, date handling, nulls, filters) and the steps to correct discrepancies and prevent future confusion.
MediumTechnical
71 practiced
Explain how you would implement dynamic row-level security where access is determined by a mapping table that changes frequently. The environment includes Tableau Server, a central identity provider, and a warehouse. Include how to automate updates to access and how you would audit access changes.
MediumTechnical
70 practiced
You are evaluating a published workbook that uses many custom SQL queries. Outline a plan to refactor custom SQL into optimized database objects. Include steps to identify candidates, test correctness, and measure performance improvements.
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