Beginning Big Data with Power BI and Excel 2013 by Neil Dunlop
Author:Neil Dunlop
Language: eng
Format: epub
Publisher: Apress, Berkeley, CA
FROM: In what tables are these columns?
WHERE: What are the conditions that link the tables? What are the selection criteria to eliminate unwanted rows?
GROUP BY: What values are to be aggregated for such purposes as subtotals?
HAVING: What conditions must each record meet to be included in the result table when using aggregation?
ORDER BY: In what order should the results be presented?
For example, the following SQL SELECT statement extracts the name and address fields from the addrlist table in which the zip code is equal to “94704.”
SELECT name, address FROM addrlist WHERE zip="94704"
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| Access | Data Mining |
| Data Modeling & Design | Data Processing |
| Data Warehousing | MySQL |
| Oracle | Other Databases |
| Relational Databases | SQL |
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