Oracle SQL by Example.pdf

Oracle SQL by Example PDF

Alice Rischert

The book... has enough depth for even a seasoned professional to pick up enough tips to pay back the price of the book many times over. -Dr. Paul Dorsey, President, Dulcian, Inc., and President, New York Oracle Users Group Students find Oracle SQL by Example to be extremely helpful not only to their coursework but also in preparing them for future careers as Oracle DBAs and developers. The layout of the text is conducive to the learning process. It introduces a concept and then reinforces that concept with an exercise. Betsy Jenaway, Coordinator, Malcomb Operations, and Senior Lecturer, College of Management, Lawrence Technological University, Southfield, MI The worlds #1 hands-on Oracle SQL workbook... fully updated for Oracle 109 Crafted for hands-on learning and tested in classrooms worldwide, this book illuminates in-depth every Oracle SQL technique youll need. From the simplest query fundamentals through the newest regular expression database enhancements, you will focus on the tasks that matter most. Hundreds of guided lab exercices will systematically strengthen your expertise in writing effective, high-performance SQL. Along the way, you will acquire an arsenal of useful Oracle SQL knowledge and techniques : an extraordinary library of solutions for your real-world challenges with Oracle SQL. Creating and using tables, views, indexes, and sequences. Working in SQL*Plus and iSQL*Plus environments : Oracle functions in depth-especially number, character, date, timestamp, interval, time zone, aggregate, and analytical functions

SQL GROUP BY | COUNT | Examples SQL GROUP BY Examples Problem: List the number of customers in each country SELECT COUNT(Id), Country FROM Customer GROUP BY Country Results: 21 records.

7.88 MB Taille du fichier
9780131451315 ISBN
Libre PRIX
Oracle SQL by Example.pdf


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Notes actuelles

Sofya Voigtuh

Analytic functions by Example | Oracle FAQ

Mattio Müllers

Oracle / PLSQL: ORDER BY Clause - Example - Sorting by relative position. You can also use the Oracle ORDER BY clause to sort by relative position in the result set, where the first field in the result set is 1. The next field is 2, and so on. For example: SELECT supplier_city FROM suppliers WHERE supplier_name = 'Microsoft' ORDER BY 1 DESC;

Noels Schulzen

ORACLE-BASE - WITH Clause : Subquery Factoring … The WITH clause, or subquery factoring clause, is part of the SQL-99 standard and was added into the Oracle SQL syntax in Oracle 9.2. The WITH clause may be processed as an inline view or resolved as a temporary table. The advantage of the latter is that repeated references to the subquery may be more efficient as the data is easily retrieved from the temporary table, rather than being

Jason Leghmann

HAVING clause - Oracle If the HAVING clause contains a subquery, the subquery can refer to the outer query block if and only if it refers to a grouping column. Example -- Find the total number of economy seats taken on a flight, -- grouped by airline, -- only when the group has at least 2 records.

Jessica Kolhmann

Oracle SQL by Example, 4th edition, presents an introduction to the Oracle SQL language in a unique and highly effective format. Rather than being a reference book, it guides you through basic skills until you reach a mastery of the language. The book challenges you to work through hands-on guided tasks rather than read through descriptions of functionality. You will be able to retain the ORACLE-BASE - WITH Clause : Subquery Factoring …