SQL Pocket Guide [NOOK Book]

Overview

This pocket guide presents the most crucial informationabout SQL in a compact and easily accessible format, covering the four commonly used SQL variants—Oracle, IBM DB2, Microsoft SQL Server, and MySQL. Topics include: Data manipulation statements (SELECT, DELETE, INSERT, UPDATE, MERGE) and transaction control statements (START TRANSACTION, SAVEPOINT, COMMIT, ROLLBACK).

Common SQL functions (date, numeric, math, trigonometric, string, conversion, aggregate) Such topics as ...

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SQL Pocket Guide

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Overview

This pocket guide presents the most crucial informationabout SQL in a compact and easily accessible format, covering the four commonly used SQL variants—Oracle, IBM DB2, Microsoft SQL Server, and MySQL. Topics include: Data manipulation statements (SELECT, DELETE, INSERT, UPDATE, MERGE) and transaction control statements (START TRANSACTION, SAVEPOINT, COMMIT, ROLLBACK).

Common SQL functions (date, numeric, math, trigonometric, string, conversion, aggregate) Such topics as literals, NULLs, CASE expressions, datatype conversion, regular expressions, grouping and summarizing data, joining tables, and writing queries (hierarchical, recursive, union, flashback) and subqueries.

Instead of presenting complex and confusing syntax diagrams, the book teaches by example, showing the SQL statements and options that readers are most like to use. All example data is available on the O'Reilly web site.

"If you need fast, accurate SQL information, with examples for multiple database engines, be sure to check out this book."
—Chris Kempster, Senior DBA and author of SQL Server 2000 for the Oracle DBA

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Product Details

  • ISBN-13: 9781449396664
  • Publisher: O'Reilly Media, Incorporated
  • Publication date: 11/10/2010
  • Sold by: Barnes & Noble
  • Format: eBook
  • Edition number: 3
  • Pages: 206
  • Sales rank: 342,153
  • File size: 5 MB

Meet the Author

Jonathan Gennick is an SQL aficionado who writes extensively on the SQL language and other database topics. He is the author of several books, and also a number of articles in Oracle Magazine. He is currently a book editor focusing on database titles, primarily involving Oracle and SQL Server.

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Table of Contents

Introduction 1
Organization of This Book 2
Feedback Needed! 2
Conventions 3
Acknowledgments 4
Example Data 4
Analytic Functions 6
CASE Expressions 6
Simple CASE Expressions 6
Searched CASE Expressions 6
Datatypes 7
Character String Types 7
Decimal Types 8
Binary Integer Types 8
Datetime Types 9
Dataype Conversion 11
Standard CAST Function 1
Standard EXTRACT Function 12
Datetime Conversions (Oracle) 12
Numeric Conversions (Oracle) 16
Datetime Conversions (DB2) 17
Numeric Conversions (DB2) 20
Datetime Conversions (SQL Server) 21
Numeric Conversions (SQL Server) 25
Datetime Conversions (MySQL) 26
Numeric Conversions (MySQL) 30
Datetime Conversions (PostgreSQL) 31
Numeric Conversions (PostgreSQL) 33
Deleting Data 35
Deleting in Order (MySQL) 35
Deleting All Rows 36
Deleting from Views and Subqueries 37
Returning Deleted Data (Oracle, DB2) 37
Double-FROM (SQL Server) 38
Functions 39
Datetime Functions (Oracle) 39
Datetime Functions (DB2) 42
Datetime Functions (SQL Server) 43
Datetime Functions (MySQL) 44
Datetime Functions (PostgreSQL) 45
Numeric and Math Functions (All Platforms) 48
Trigonometric Functions (All Platforms) 50
String Functions 50
Greatest and Least (Oracle, PostgreSQL) 55
Grouping and Summarizing 56
Aggregate Functions 56
Group by 57
Useful Group by Techniques 59
Having 60
Group by Extensions (Oracle, DB2) 61
Group by Extensions (SQL Server) 64
Hierarchical Queries 65
Recursive With (SQL Server, DB2) 66
Connect by (Oracle) 68
Indexes, Creating 74
Indexes, Removing 74
Inserting Data 75
Single-Row Inserts 75
Multi-Row Inserts (DB2, MySQL) 76
Insert Targets 76
Subquery Inserts 76
Returning Inserted Values (Oracle, DB2) 77
Multi-Table Inserts (Oracle) 78
Joining Tables 80
The Concept of a Join 80
Cross Joins 81
Inner Joins 82
The Using Clause (Oracle, MySQL, PostgreSQL) 83
Natural Joins (Oracle, MySQL, PostgreSQL) 84
Non-Equi-Joins 85
Outer Joins 86
Literals 89
Text Literals 90
Numeric Literals 92
Datetime Literals (Oracle, MySQL, PostgreSQL) 92
Datetime Interval Literals 93
Merging Data (Oracle, DB2) 93
Nulls 96
Predicates for Nulls 96
Using CASE with Nulls 96
Using the Coalesce Function 97
Functions for Nulls (Oracle) 97
Functions for Nulls (DB2) 98
Functions for Nulls (SQL Server) 98
Functions for Nulls (MySQL) 99
Functions for Nulls (PostgreSQL) 100
OLAP Functions 100
Predicates 100
Exists Predicates 101
In Predicates 102
Between Predicates 102
Like Predicates 103
Recursive Queries 104
Regular Expressions 104
Regular Expressions (Oracle) 104
Regular Expressions (SQL Server) 108
Regular Expressions (MySQL) 108
Regular Expressions (PostgreSQL) 110
Selecting Data 115
The Select Clause 115
All and Distinct 120
The From Clause 121
The Where Clause 124
The Group by Clause 124
The Having Clause 124
The Order by Clause 125
Subqueries 126
The With Clause (Oracle, SQL Server, DB2) 127
Tables, Creating 130
Creating a Table (Oracle) 130
Creating a Table (DB2) 132
Creating a Table (SQL Server) 133
Creating a Table (MySQL) 133
Creating a Table (PostgreSQL) 134
Tables, Modifying 135
Modifying a Table (Oracle) 135
Modifying a Table (DB2) 136
Modifying a Table (SQL Server) 137
Modifying a Table (MySQL) 138
Modifying a Table (PostgreSQL) 139
Tables, Removing 140
Transaction Management 141
Autocommit Mode (SQL Server, MySQL, PostgreSQL) 141
Starting a Transaction 142
Ending a Transaction 146
Aborting a Transaction 147
Aborting to a Transaction Savepoint 148
Union Queries 148
Union and Union All 149
Order by in Union Queries 150
Names and Datatypes in a Union 150
Order of Evaluation 151
Except (or Minus) 152
Intersect 153
Updating Data 155
Simple Updates 155
New Values from a Subquery 156
Updating Views and Subqueries 157
Update From Clause (SQL Server, PostgreSQL) 157
Returning Updated Data (Oracle, DB2) 158
Window Functions 158
Defining a Summary Window (Oracle, DB2, SQL Server) 159
Ordering and Ranking Within a Window (Oracle, DB2, SQL Server) 160
Comparing Values Across Rows (Oracle) 162
Summarizing over a Moving Window (Oracle, DB2) 164
Window Function Syntax (Oracle) 164
Window Function Syntax (DB2) 165
Window Function Evaluation and Placement 166
Index 167
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Customer Reviews

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Sort by: Showing all of 2 Customer Reviews
  • Posted February 22, 2011

    more from this reviewer

    Must Have IT Tool Kit for DBA or Developer

    Jonathan Gennick's SQL Pocket Guide is a seamless guide any Database Admin or developer, expert or beginner alike, should have in their IT toolbox. I recall when I was in the university; I picked up a "learn SQL in 24 hours" book as a supplementary to our curriculum book. Had I had this pocket guide then, I would have most certainly struggled less. Most recently I been developing .Net applications to a Pervasive SQL Database, and even with years of Microsoft SQL Server experience, this reference book has been on my side.

    SQL is a platform independent database language, this guide will provide guidance and examples for Oracle, DB2, SQL Server, MySQL and PostgreSQL. You can also download code sample for all the mentioned platforms. Moreover, the organization of the book will indicate platform specifics, for instance, Data types spans several pages to distinguish between the various database platforms. The book is structured in alphabetical order by commands, this makes it easier for when you know you want to write a UNION but don't remember the syntax, you're sure to find it towards the end of the book. At times it may seem there are superfluous references to databases you don't work with, nonetheless, it is a Pocket Book primarily for reference and I won't hesitate in recommending it.

    2 out of 2 people found this review helpful.

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  • Anonymous

    Posted June 28, 2006

    Great quick reference

    This is a great quick reference. I like that it distinguishes which platform the various sql will work with. The book does not bog down with extreme examples. This book is not a training book. This does a nice job of covering common basic sql.

    Was this review helpful? Yes  No   Report this review
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