SQL Tricks (Advanced Database Programming)

SQL Tricks (Advanced Database Programming)
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157
By:"Chris Fehily"
"Computers"
Published on 2014-07-14 by Questing Vole Press

This cookbook of advanced techniques is for anyone who knows the basics of SQL and wants to move beyond simple SELECT-FROM-WHERE queries.

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This cookbook of advanced techniques is for anyone who knows the basics of SQL and wants to move beyond simple SELECT-FROM-WHERE queries. You'll find solutions to problems that analysts, app developers, and database programmers often face, from simple tasks, like picking random rows, to complex operations, like traversing hierarchies. Each recipe includes a discussion of the underlying logic, important concepts, and best practices. Take full advantage of standard (ANSI/ISO) SQL, or use DBMS-specific features that dramatically extend the power of standard SQL. Use the scores of code examples directly in real-world DBMS applications, or as a source of insight for related problems. - Covers Oracle, Microsoft SQL Server, IBM DB2, MySQL, PostgreSQL, and Microsoft Access.- Implement cross-platform solutions in standard SQL, or DBMS-specific solutions for your particular system.- Full-color SQL code listings help you see the elements and structure of the language.- Download the sample database and code listings to follow along with the author's examples.- Plenty of tips, tricks, and timesavers.- Fully cross-referenced, linked, and searchable. ContentsIntroduction1. Running SQL Programs2. Calculating Running Statistics3. Generating Sequences4. Finding Sequences, Runs, and Regions5. Limiting the Number of Rows Returned6. Assigning Ranks7. Calculating a Trimmed Mean8. Picking Random Rows9. Handling Duplicates10. Creating a Telephone List11. Retrieving Metadata12. Working with Dates13. Calculating a Median14. Finding Extreme Values15. Changing Running Statistics Midstream16. Pivoting Results17. Working with Hierarchies

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