عنوان

SQL queries for mere mortals :

0134858336

9780134858333

SQL queries for mere mortals :

[Book]

a hands-on guide to data manipulation in SQL

John L. Viescas.

Fourth edition.

[New York, NY] :

Addison-Wesley / Pearson Education, Inc.,

[2018]

xxvi, 930 pages :

illustrations ;

23 cm.

For mere mortals

Includes bibliographical references (pages 907-908) and index.

pt. 1. Relational databases and SQL. What is relational? ; Ensuring your database structure is sound ; A concise history of SQL -- pt. II. SQL basics. Creating a simple query ; Getting more than simple columns ; Filtering your data -- pt. III. Working with multiple tables ; Thinking in sets ; Inner joins ; Outer joins ; UNIONs ; Subqueries -- pt. IV. Summarizing and grouping data ; Simple totals ; Grouping data ; Filtering grouped data -- pt. V. Modifying sets of data. Updating sets of data ; Inserting sets of data ; Deleting sets of data -- pt. VI: Introduction to solving tough problems. "NOT" and "AND" problems ; Condition testing ; Using unlinked data and "driver" tables ; Performing complex calculations on groups ; Partitioning data into windows -- In closing -- Appendices. A. SQL standard diagrams ; B. Schema for the sample databases ; C. Date and time types, operations, and functions ; D. Suggested reading.

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"SQL Queries for Mere Mortals has earned worldwide praise as the clearest, simplest tutorial on writing effective queries with the latest SQL standards and database applications. Now, author John L. Viescas has updated this hands-on classic with even more advanced and valuable techniques. Step by step, Viescas guides you through creating reliable queries for virtually any current SQL-based database. He demystifies all aspects of SQL query writing, from simple data selection and filtering to joining multiple tables and modifying sets of data. Building on the basics, Viescas shows how to solve challenging real-world problems, including applying multiple complex conditions on one table, performing sophisticated logical evaluations, and using unlinked tables to think "outside the box." In two brand-new chapters, you learn how to perform complex calculations on groups for sophisticated reporting, and how to partition data into windows for more flexible aggregation. Practice all you want with downloadable sample databases for today's versions of Microsoft Office Access, Microsoft SQL Server, and the open source MySQL and PostgreSQL databases. Whether you're a DBA, developer, user, or student, there's no better way to master SQL. Coverage includes: Getting started: understanding what relational databases are, and ensuring that your database structures are sound SQL basics: using SELECT statements, creating expressions, sorting information with ORDER BY, and filtering data using WHERE Summarizing and grouping data with GROUP BY and HAVING clauses Drawing data from multiple tables: using INNER JOIN, OUTER JOIN, and UNION operators, and working with subqueries Modifying data sets with UPDATE, INSERT, and DELETE statements Advanced queries: complex NOT and AND, conditions, if-then-else using CASE, unlinked tables, driver tables, and more NEW! Using advanced GROUP BY keywords to create subtotals, roll-ups, and more NEW! Applying window functions to answer more sophisticated questions, and gain deeper insight into your data."--Page 4 of cover.

Database searching.

SQL (Computer program language)

Querying (Computer science)

SQL (Computer program language)

Viescas, John L.,1947-

20200822085940.0

rda

[Book]

Y