As part of Tableau Questions and Answers series, I am asking questions related to Tableau and data warehousing concepts, for this post I am asking about LOD calculations. I will encourage my students and other readers to explore the answers and reply with comments.
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LOD expressions give you even more control on the level of granularity you want to compute both at data source level and visualization level. They can be performed at a more granular level (INCLUDE), a less granular level (EXCLUDE), or an entirely independent level (FIXED).
Lod(level of detail) calculations compute aggregation which outside of the view of data. Lod expression has a specific sumtax and work with specific keyword such as include, exclude and fixed.