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Microsoft Azure SQL Data Warehouse - Architecture and SQL by Todd Wilson, Tom Coffing

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Chapter 10 - Join Functions

“When spider webs unite they can tie up a lion.”

- African Proverb

The Azure SQL Data Warehouse Join Quiz

Which Statement is NOT true!

1.Each Table in the Azure SQL Data Warehouse has a Distribution Key, unless it is a replicated table.

2.The Distribution Key is the mechanism that allows the Azure SQL Data Warehouse to physically distribute the rows of a table across the Nodes.

3.For two rows to be Joined together the Azure SQL Data Warehouse insists that both rows are physically in the same memory.

4.The Azure SQL Data Warehouse will either Redistribute one or both of the tables or Duplicate the smaller table across all nodes to ensure matching rows are in the same memory, even if it is only for the life of the Join. ...

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