Abstract
The GROUP BY clause is a venerable member of the SQL statement family. After learning basic SELECT statements, it is one of first specialized parts of SQL that many practitioners cut their teeth on when learning to create aggregations from raw data and transforming that data into useful information.
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Notes
- 1.
If there are no rows in the table, GROUP BY CUBE() returns zero rows.
- 2.
The NVL() function is used to provide a default value for sh.customers.cust_income_level so that output of examples may be easier to compare.
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© 2013 Karen Morton
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Morton, K., Osborne, K., Sands, R., Shamsudeen, R., Still, J. (2013). Advanced Grouping. In: Pro Oracle SQL. Apress, Berkeley, CA. https://doi.org/10.1007/978-1-4302-6221-3_7
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DOI: https://doi.org/10.1007/978-1-4302-6221-3_7
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Publisher Name: Apress, Berkeley, CA
Print ISBN: 978-1-4302-6220-6
Online ISBN: 978-1-4302-6221-3
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