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SQL Tips & Tricks

SQL Tips & Tricks. Getting more done with SQL DML statements. Lannois Carroll-Woolery, IST. Disclaimers. “This isn’t what I expected…” “I know a better way...” “It worked when you did it…”. Useful DML Techniques. Conditional logic Crosstab reports Running Totals

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SQL Tips & Tricks

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  1. SQL Tips & Tricks Getting more done with SQL DML statements Lannois Carroll-Woolery, IST

  2. Disclaimers • “This isn’t what I expected…” • “I know a better way...” • “It worked when you did it…”

  3. Useful DML Techniques • Conditional logic • Crosstab reports • Running Totals • Generating a list of dates • Counting the number of working days • Generating date ranges from Eff. Dates • Histograms • Hierarchical Queries

  4. Round the World Itinerary

  5. Table PS_FLIGHTS

  6. “What currencies will I need?”Conditional Logic

  7. “What days of the week will I fly?”Crosstab reports

  8. “How many miles have I travelled so far?” Running Totals

  9. “Can I make a detailed itinerary?”Generating a list of dates

  10. “How many Vacation Days do I need?”Calc. Elapsed Working Days

  11. “What dates will I be in each country?”Date Ranges from Effective-Dated tables

  12. “I only like afternoon flights…”Histograms

  13. “I need my manager’s boss’ approval…”Hierarchical Queries 1/2

  14. “I’m going over his/her head…”Hierarchical Queries 2/2

  15. Questions? • Conditional logic • Crosstab reports • Running Totals • Generating a list of dates • Counting the number of working days • Generating date ranges from Eff. Dates • Histograms • Hierarchical Queries

  16. References • http://www.oracle.com/technetwork/issue-archive/index-093676.html • http://www.oracle.com/pls/db102/portal.all_books#index-SQL • http://www.orafaq.com/wiki/SQL_FAQ#How_does_one_code_a_matrix.2Fcrosstab.2Fpivot_report_in_SQL.3F • http://consultingblogs.emc.com/jamespipe/archive/2007/01/15/Oracle-SQL-_2D00_-Generate-a-list-of-dates.aspx • http://www.orafaq.com/node/55 • Money Sense magazine. September/October 2010

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