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Teradata SQL by Tom Coffing, Mike Larkins

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Chapter 7 - Aggregation Function

“Teradata climbed Aggregate Mountain and delivered a better way to Sum It.”

- Tera-Tom Coffing

 

Quiz – You calculate the Answer Set in your own Mind

Aggregation_Table
Employee_No        Salary
      423400      423401      423402   100000.00100000.00      NULL
SELECT AVG(Salary) as “AVG”
  ,Count(Salary) as SalCnt
  ,Count(*)      as RowCnt
FROM Aggregation_Table ;

images

What would the result set be from the above query? The next slide shows answers!

 

Answer – You calculate the Answer Set in your own Mind

Aggregation_Table
Employee_No        Salary
      423400      423401      423402 ...

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