SQL Tricks (Advanced Database Programming)

Questing Vole Press
7
Free sample

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.


Contents

Introduction

1. Running SQL Programs

2. Calculating Running Statistics

3. Generating Sequences

4. Finding Sequences, Runs, and Regions

5. Limiting the Number of Rows Returned

6. Assigning Ranks

7. Calculating a Trimmed Mean

8. Picking Random Rows

9. Handling Duplicates

10. Creating a Telephone List

11. Retrieving Metadata

12. Working with Dates

13. Calculating a Median

14. Finding Extreme Values

15. Changing Running Statistics Midstream

16. Pivoting Results

17. Working with Hierarchies


Read more
Collapse

About the author

Chris Fehily is a statistician and author based in San Francisco.

Read more
Collapse
3.9
7 total
Loading...

Additional Information

Publisher
Questing Vole Press
Read more
Collapse
Published on
Jul 14, 2014
Read more
Collapse
Pages
157
Read more
Collapse
ISBN
9781937842253
Read more
Collapse
Read more
Collapse
Read more
Collapse
Language
English
Read more
Collapse
Genres
Computers / Databases / General
Computers / Databases / Servers
Computers / Desktop Applications / Databases
Computers / Programming Languages / SQL
Read more
Collapse
Content Protection
This content is DRM free.
Read more
Collapse
Read Aloud
Available on Android devices
Read more
Collapse
Eligible for Family Library

Reading information

Smartphones and Tablets

Install the Google Play Books app for Android and iPad/iPhone. It syncs automatically with your account and allows you to read online or offline wherever you are.

Laptops and Computers

You can read books purchased on Google Play using your computer's web browser.

eReaders and other devices

To read on e-ink devices like the Sony eReader or Barnes & Noble Nook, you'll need to download a file and transfer it to your device. Please follow the detailed Help center instructions to transfer the files to supported eReaders.
Get up to speed fast with SQL, the language of databases. Bestselling author Chris Fehily teaches you just the parts of SQL that you need to know. Quick, learn-by-example lessons start with simple data retrieval and sorting, move on to filtering and grouping, and then build to more-advanced topics, including joins, subqueries, views, and transactions. Whether you're an analyst, developer, data scientist, or Microsoft Office user, you'll find straightforward, practical answers. You can download the sample database to follow along with the examples.


- Covers Oracle, Microsoft SQL Server, IBM DB2, MySQL, PostgreSQL, and Microsoft Access.

- Learn the core language for standard SQL, and variations for the most widely used database systems.

- Organize your database in terms of the relational model.

- Master tables, columns, rows, and keys.

- Retrieve, sort, and format data.

- Filter the data that you don't want to see.

- Convert and manipulate data with SQL's built-in functions and operators.

- Use aggregate functions to summarize data.

- Create complex SQL statements by using joins, subqueries, constraints, conditional logic, and metadata.

- Create, alter, and drop tables, indexes, and views.

- Insert, update, delete, and merge data.

- Execute transactions to maintain the integrity of your data.

- Avoid common pitfalls involving nulls.

- Troubleshoot and optimize queries.

- Plenty of tips, tricks, and timesavers.

- Fully cross-referenced, linked, and searchable.


Contents

1. Introduction

2. Database Basics

3. SQL Basics

4. Retrieving Data from a Table

5. Sorting Rows

6. Filtering Rows

7. Combining and Negating Conditions

8. Pattern Matching

9. More Ways to Filter Rows

10. Operators and Functions

11. Working with Functions

12. Evaluating Conditional Values

13. Summarizing Data

14. Grouping Data

15. Joining Tables

16. Working with Joins

17. Subqueries

18. Combining Queries

19. Inserting Rows

20. Updating and Deleting Rows

21. Creating and Changing Tables

22. Indexes

23. Views

24. Transactions

A. The Sample Database

B. Running SQL Programs

C. Data Types


You know the rudiments of the SQL query language, yet you feel you aren't taking full advantage of SQL's expressive power. You'd like to learn how to do more work with SQL inside the database before pushing data across the network to your applications. You'd like to take your SQL skills to the next level.

Let's face it, SQL is a deceptively simple language to learn, and many database developers never go far beyond the simple statement: SELECT columns FROM table WHERE conditions. But there is so much more you can do with the language. In the SQL Cookbook, experienced SQL developer Anthony Molinaro shares his favorite SQL techniques and features. You'll learn about:



Window functions, arguably the most significant enhancement to SQL in the past decade. If you're not using these, you're missing out

Powerful, database-specific features such as SQL Server's PIVOT and UNPIVOT operators, Oracle's MODEL clause, and PostgreSQL's very useful GENERATE_SERIES function

Pivoting rows into columns, reverse-pivoting columns into rows, using pivoting to facilitate inter-row calculations, and double-pivoting a result set

Bucketization, and why you should never use that term in Brooklyn.

How to create histograms, summarize data into buckets, perform aggregations over a moving range of values, generate running-totals and subtotals, and other advanced, data warehousing techniques

The technique of walking a string, which allows you to use SQL to parse through the characters, words, or delimited elements of a string

Written in O'Reilly's popular Problem/Solution/Discussion style, the SQL Cookbook is sure to please. Anthony's credo is: "When it comes down to it, we all go to work, we all have bills to pay, and we all want to go home at a reasonable time and enjoy what's still available of our days." The SQL Cookbook moves quickly from problem to solution, saving you time each step of the way.

Perfect for end users, analysts,  data scientists, and app developers, this best-selling guide will get you up and running with SQL, the language of databases. You'll find general concepts, practical answers, and clear explanations of what the various SQL statements can do. Hundreds of examples of varied difficulty encourage you to experiment and explore. Full-color SQL code listings help you see the elements and structure of the language. You can download the sample database to follow along with the author's examples.


- Covers Oracle, Microsoft SQL Server, IBM DB2, MySQL, PostgreSQL, and Microsoft Access.

- Learn the core language for standard SQL, and variations for the most widely used database systems.

- Organize your database in terms of the relational model.

- Master tables, columns, rows, and keys.

- Retrieve, sort, and format data.- Filter the data that you don't want to see.

- Convert and manipulate data with SQL's built-in functions and operators.

- Use aggregate functions to summarize data.

- Create complex SQL statements by using joins, subqueries, constraints, conditional logic, and metadata.

- Create, alter, and drop tables, indexes, and views.

- Insert, update, delete, and merge data.

- Execute transactions to maintain the integrity of your data.

- Avoid common pitfalls involving nulls.

- Troubleshoot and optimize queries.

- Plenty of tips, tricks, and timesavers.

- Fully cross-referenced, linked, and searchable.


Contents

Introduction

1. Running SQL Programs

2. The Relational Model

3. SQL Basics

4. Retrieving Data from a Table

5. Operators and Functions

6. Summarizing and Grouping Data

7. Joins

8. Subqueries

9. Set Operations

10. Inserting, Updating, and Deleting Rows

11. Creating, Altering, and Dropping Tables

12. Indexes

13. Views

14. Transactions


Sams Teach Yourself SQL in 10 Minutes, Fourth Edition

New full-color code examples help you see how SQL statements are structured


Whether you're an application developer, database administrator, web application designer, mobile app developer, or Microsoft Office users, a good working knowledge of SQL is an important part of interacting with databases. And Sams Teach Yourself SQL in 10 Minutes offers the straightforward, practical answers you need to help you do your job.


Expert trainer and popular author Ben Forta teaches you just the parts of SQL you need to know–starting with simple data retrieval and quickly going on to more complex topics including the use of joins, subqueries, stored procedures, cursors, triggers, and table constraints.


You'll learn methodically, systematically, and simply–in 22 short, quick lessons that will each take only 10 minutes or less to complete.


With the Fourth Edition of this worldwide bestseller, the book has been thoroughly updated, expanded, and improved. Lessons now cover the latest versions of IBM DB2, Microsoft Access, Microsoft SQL Server, MySQL, Oracle, PostgreSQL, SQLite, MariaDB, and Apache Open Office Base. And new full-color SQL code listings help the beginner clearly see the elements and structure of the language.

10 minutes is all you need to learn how to...

Use the major SQL statements Construct complex SQL statements using multiple clauses and operators Retrieve, sort, and format database contents Pinpoint the data you need using a variety of filtering techniques Use aggregate functions to summarize data Join two or more related tables Insert, update, and delete data Create and alter database tables Work with views, stored procedures, and more Table of Contents

1 Understanding SQL

2 Retrieving Data

3 Sorting Retrieved Data

4 Filtering Data

5 Advanced Data Filtering

6 Using Wildcard Filtering

7 Creating Calculated Fields

8 Using Data Manipulation Functions

9 Summarizing Data

10 Grouping Data

11 Working with Subqueries

12 Joining Tables

13 Creating Advanced Joins

14 Combining Queries

15 Inserting Data

16 Updating and Deleting Data

17 Creating and Manipulating Tables

18 Using Views

19 Working with Stored Procedures

20 Managing Transaction Processing

21 Using Cursors

22 Understanding Advanced SQL Features

Appendix A: Sample Table Scripts

Appendix B: Working in Popular Applications

Appendix C : SQL Statement Syntax

Appendix D: Using SQL Datatypes

Appendix E: SQL Reserved Words


©2018 GoogleSite Terms of ServicePrivacyDevelopersArtistsAbout Google|Location: United StatesLanguage: English (United States)
By purchasing this item, you are transacting with Google Payments and agreeing to the Google Payments Terms of Service and Privacy Notice.