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A partition is based either on a table or view in a data source, or on a table or named query in a data source view. The location where partition data is stored is defined by the data source binding. Typically, you can partition a measure group horizontally or vertically:

  • In a horizontally partitioned measure group, each partition in a measure group is based on a separate table. This kind of partitioning is appropriate when data is separated into multiple tables. For example, some relational databases have a separate table for each month's data.

  • In a vertically partitioned measure group, a measure group is based on a single table, and each partition is based on a source system query that filters the data for the partition. For example, if a single table contains several months data, the measure group could still be partitioned by month by applying a Transact-SQL WHERE clause that returns a separate month's data for each partition.

It seems like it should be the opposite.

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I believe you are correct to object to this description. The partitioning of a measure group is always a "horizontal partitioning" as the term is commonly used. I submitted a Pull Request to change the docs to describe the options as a "multi-table partition scheme" or a "single-table partition scheme".

  • Thank you, David. – ola May 11 '19 at 17:26

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