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SQL in 10 Minutes a Day, Sams Teach Yourself de Ben Forta

SQL in 10 Minutes a Day, Sams Teach Yourself

Autor Ben Forta
en Limba Engleză Paperback – 10 dec 2019

Descoperim în SQL in 10 Minutes a Day, Sams Teach Yourself o resursă tehnică esențială pentru oricine interacționează cu datele, de la dezvoltatori de aplicații mobile până la utilizatori de Microsoft Office. Această a 5-a ediție se concentrează pe elementele fundamentale ale standardului SQL, oferind soluții practice pentru interogarea și manipularea bazelor de date într-un format extrem de eficient. Considerăm că forța acestui manual rezidă în capacitatea de a sintetiza concepte complexe în segmente de învățare care nu depășesc 10 minute.

Structura este riguros organizată, pornind de la înțelegerea conceptelor de bază și recuperarea simplă a datelor prin instrucțiunea SELECT, progresând rapid către tehnici avansate. Apreciem includerea unor teme precum joncțiunile (joins), subinterogările, procedurile stocate, cursoarele (cursors) și constrângerile de tabel, elemente vitale pentru administrarea modernă a bazelor de date. Pe linia practică a lucrării SQL for Beginners de Preston Prescott, dar cu focus pe eficiența timpului și aplicabilitatea multi-platformă, volumul lui Forta elimină teoria redundantă în favoarea execuției imediate.

Această lucrare continuă tradiția autorului de a democratiza accesul la tehnologie, fiind mai tehnică decât titlurile sale pentru tineri, precum Captain Code, dar păstrând aceeași claritate didactică. Față de SQL de Michael J. Donahoo, care servește mai degrabă ca supliment academic, ediția de față este un ghid de productivitate imediată, incluzând secțiuni „Try It Yourself” care permit testarea codului în timp real. Este o resursă indispensabilă în portofoliul Pearson pentru cei care au nevoie de rezultate concrete, nu doar de teorie.

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Specificații

ISBN-13: 9780135182796
ISBN-10: 0135182794
Pagini: 306
Dimensiuni: 231 x 154 x 10 mm
Greutate: 0.34 kg
Ediția:5th edition
Editura: Pearson
Colecția Pearson Professional

De ce să citești această carte

Recomandăm această carte oricărui profesionist care are nevoie de o stăpânire rapidă a limbajului SQL fără a parcurge tratate academice voluminoase. Veți câștiga abilitatea de a construi interogări complexe și de a gestiona structuri de date în doar câteva minute pe zi. Este ideală pentru programatori, administratori de sistem sau analiști care doresc un ghid de referință rapid și aplicat, validat de experiența vastă a lui Ben Forta.

Despre autor

Ben Forta este Senior Technical Evangelist la Adobe (fost Macromedia) și o autoritate recunoscută în industria IT, cu peste două decenii de experiență în dezvoltare de produs, instruire și marketing. Este autorul unor serii de succes precum „Sams Teach Yourself SQL in 10 Minutes” și „ColdFusion Web Application Construction Kit”, lucrările sale fiind tipărite în peste 250.000 de exemplare la nivel mondial. Expertiza sa acoperă o gamă largă de tehnologii, de la JavaServer Pages la computing mobil, fiind apreciat pentru stilul său pedagogic direct și orientat către rezultate practice.

Descriere scurtă

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 short, quick lessons that will each take only 10 minutes or less to complete.

Cuprins

Introduction 1 Who Is the Teach Yourself SQL Book For? . . . . . . . . . . . . . . . . . . . . . . . . . . 1 DBMSs Covered in This Book . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Conventions Used in This Book . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1 Understanding SQL 5 Database Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 What Is SQL? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Try It Yourself . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2 Retrieving Data 13 The SELECT Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Retrieving Individual Columns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Retrieving Multiple Columns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Retrieving All Columns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Retrieving Distinct Rows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Limiting Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Using Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Challenges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 3 Sorting Retrieved Data 25 Sorting Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Sorting by Multiple Columns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Sorting by Column Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Specifying Sort Direction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Challenges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 4 Filtering Data 33 Using the WHERE Clause . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 The WHERE Clause Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Challenges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 5 Advanced Data Filtering 41 Combining WHERE Clauses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Using the IN Operator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Using the NOT Operator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Challenges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 6 Using Wildcard Filtering 51 Using the LIKE Operator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Tips for Using Wildcards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Challenges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 7 Creating Calculated Fields 59 Understanding Calculated Fields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Concatenating Fields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Performing Mathematical Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Challenges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 8 Using Data Manipulation Functions 69 Understanding Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 Using Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 Challenges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 9 Summarizing Data 79 Using Aggregate Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 Aggregates on Distinct Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 Combining Aggregate Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 Challenges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 10 Grouping Data 89 Understanding Data Grouping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 Creating Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 Filtering Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 Grouping and Sorting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94 SELECT Clause Ordering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 Challenges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 11 Working with Subqueries 99 Understanding Subqueries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 Filtering by Subquery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 Using Subqueries as Calculated Fields . . . . . . . . . . . . . . . . . . . . . . . . . . 103 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105 Challenges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106 12 Joining Tables 107 Understanding Joins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107 Creating a Join . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115 Challenges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 13 Creating Advanced Joins 117 Using Table Aliases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 Using Different Join Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118 Using Joins with Aggregate Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . 123 Using Joins and Join Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 Challenges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126 14 Combining Queries 127 Understanding Combined Queries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127 Creating Combined Queries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133 Challenges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134 15 Inserting Data 135 Understanding Data Insertion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135 Copying from One Table to Another . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142 Challenges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143 16 Updating and Deleting Data 145 Updating Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145 Deleting Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147 Guidelines for Updating and Deleting Data . . . . . . . . . . . . . . . . . . . . . . . 149 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149 Challenges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 17 Creating and Manipulating Tables 151 Creating Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151 Updating Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155 Deleting Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157 Renaming Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158 Challenges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159 18 Using Views 161 Understanding Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161 Creating Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169 Challenges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170 19 Working with Stored Procedures 171 Understanding Stored Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171 Understanding Why to Use Stored Procedures . . . . . . . . . . . . . . . . . . . . . 172 Executing Stored Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173 Creating Stored Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178 20 Managing Transaction Processing 179 Understanding Transaction Processing . . . . . . . . . . . . . . . . . . . . . . . . . . 179 Controlling Transactions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185 21 Using Cursors 187 Understanding Cursors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187 Working with Cursors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192 22 Understanding Advanced SQL Features 193 Understanding Constraints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193 Understanding Indexes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198 Understanding Triggers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 Database Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202 A Sample Table Scripts 203 B SQL Statement Syntax 209 C Using SQL Datatypes 215 D SQL Reserved Words 221 TOC, 9780135182796, 10/9/19

Notă biografică

Ben Forta is Adobe's Senior Director of Education Initiatives and has three decades of experience in the computer industry in product development, support, training, and product marketing. He is the author of the best-selling Sams Teach Yourself SQL in 10 Minutes (including spinoff titles on MariaDB, MySQL, SQL Server T-SQL, and Oracle PL/SQL), Learning Regular Expressions, as well as books on Java, Windows, and more. He has extensive experience in database design and development, has implemented databases for several highly successful commercial software programs and websites, and is a frequent lecturer and columnist on application development and Internet technologies. Ben lives in Oak Park, Michigan, with his wife, Marcy, and their children. He welcomes your email at ben@forta.com and invites you to visit his website at http://forta.com.