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Author: Dan Tow
Publisher: "O'Reilly Media, Inc."
ISBN: 059655236X
Category : Computers
Languages : en
Pages : 338
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Book Description
A poorly performing database application not only costs users time, but also has an impact on other applications running on the same computer or the same network. SQL Tuning provides an essential next step for SQL developers and database administrators who want to extend their SQL tuning expertise and get the most from their database applications.There are two basic issues to focus on when tuning SQL: how to find and interpret the execution plan of an SQL statement and how to change SQL to get a specific alternate execution plan. SQL Tuning provides answers to these questions and addresses a third issue that's even more important: how to find the optimal execution plan for the query to use.Author Dan Tow outlines a timesaving method he's developed for finding the optimum execution plan--rapidly and systematically--regardless of the complexity of the SQL or the database platform being used. You'll learn how to understand and control SQL execution plans and how to diagram SQL queries to deduce the best execution plan for a query. Key chapters in the book include exercises to reinforce the concepts you've learned. SQL Tuning concludes by addressing special concerns and unique solutions to "unsolvable problems."Whether you are a programmer who develops SQL-based applications or a database administrator or other who troubleshoots poorly tuned applications, SQL Tuning will arm you with a reliable and deterministic method for tuning your SQL queries to gain optimal performance.
Author: Dan Tow
Publisher: "O'Reilly Media, Inc."
ISBN: 059655236X
Category : Computers
Languages : en
Pages : 338
Get Book Here
Book Description
A poorly performing database application not only costs users time, but also has an impact on other applications running on the same computer or the same network. SQL Tuning provides an essential next step for SQL developers and database administrators who want to extend their SQL tuning expertise and get the most from their database applications.There are two basic issues to focus on when tuning SQL: how to find and interpret the execution plan of an SQL statement and how to change SQL to get a specific alternate execution plan. SQL Tuning provides answers to these questions and addresses a third issue that's even more important: how to find the optimal execution plan for the query to use.Author Dan Tow outlines a timesaving method he's developed for finding the optimum execution plan--rapidly and systematically--regardless of the complexity of the SQL or the database platform being used. You'll learn how to understand and control SQL execution plans and how to diagram SQL queries to deduce the best execution plan for a query. Key chapters in the book include exercises to reinforce the concepts you've learned. SQL Tuning concludes by addressing special concerns and unique solutions to "unsolvable problems."Whether you are a programmer who develops SQL-based applications or a database administrator or other who troubleshoots poorly tuned applications, SQL Tuning will arm you with a reliable and deterministic method for tuning your SQL queries to gain optimal performance.
Author:
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 230
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Book Description
This study evaluated the impacts of construction on the air content and air-void system structure of Portland cement concrete pavements. The primary intent was to quantify the air content of fresh concrete before and after it has gone through the slipform paver. The air-void system parameters of hardened concrete were then assessed using cast and extracted core specimens. The results of the air content testing on fresh concrete and the concrete cylinder specimens cast in the field suggested that there is some loss of air as the concrete passes through the paver. Laboratory testing performed on cores extracted from the pavement did not provide any conclusive evidence that entrained air is lost during the slipform paving process. In fact, many of the extracted cores had measured air content values that were much higher than the specification requirement. If excessive, this could result in increased permeability and low-strength related issues. Although a rigorous statistical analysis was not performed, the results suggest that the air content testing on fresh concrete is not capturing the true air content of the concrete placed with a slipform paver. The fresh concrete air content is generally lower than the air content measured in the cores.
Author: Senate Select Committee On Intelligence
Publisher: Melville House
ISBN: 1612198473
Category : Political Science
Languages : en
Pages : 820
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Book Description
The study edition of book the Los Angeles Times called, "The most extensive review of U.S. intelligence-gathering tactics in generations." This is the complete Executive Summary of the Senate Intelligence Committee's investigation into the CIA's interrogation and detention programs -- a.k.a., The Torture Report. Based on over six million pages of secret CIA documents, the report details a covert program of secret prisons, prisoner deaths, interrogation practices, and cooperation with other foreign and domestic agencies, as well as the CIA's efforts to hide the details of the program from the White House, the Department of Justice, the Congress, and the American people. Over five years in the making, it is presented here exactly as redacted and released by the United States government on December 9, 2014, with an introduction by Daniel J. Jones, who led the Senate investigation. This special edition includes: • Large, easy-to-read format. • Almost 3,000 notes formatted as footnotes, exactly as they appeared in the original report. This allows readers to see obscured or clarifying details as they read the main text. • An introduction by Senate staffer Daniel J. Jones who led the investigation and wrote the report for the Senate Intelligence Committee, and a forward by the head of that committee, Senator Dianne Feinstein.
Author: Ronald M. Lanner
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 316
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Book Description
Author: United States. Federal Railroad Administration. Office of Safety
Publisher:
ISBN:
Category : Railroad accidents
Languages : en
Pages : 200
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Book Description
Author: Richard Robinson
Publisher: CRC Press
ISBN: 1482288206
Category : Technology & Engineering
Languages : en
Pages : 539
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Book Description
Developing countries in the tropics have different natural conditions and different institutional and financial situations to industrialized countries. However, most textbooks on highway engineering are based on experience from industrialized countries with temperate climates, and deal only with specific problems. Road Engineering for Development (published as Highway and Traffic Engineering in Developing Countries in its first edition) provides a comprehensive description of the planning, design, construction and maintenance of roads in developing countries. It covers a wide range of technical and non-technical problems that may confront road engineers working in this area. The technical content of the book has been fully updated and current development issues are focused on. Designed as a fundamental text for civil engineering students this book also offers a broad, practical view of the subject for practising engineers. It has been written with the assistance of a number of world-renowned specialist professional engineers with many years experience in Africa, the Middle East, Asia and Central America.
Author: National Academies of Sciences, Engineering, and Medicine
Publisher: National Academies Press
ISBN: 030945784X
Category : Medical
Languages : en
Pages : 503
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Book Description
The U.S. Census Bureau has reported that 56.7 million Americans had some type of disability in 2010, which represents 18.7 percent of the civilian noninstitutionalized population included in the 2010 Survey of Income and Program Participation. The U.S. Social Security Administration (SSA) provides disability benefits through the Social Security Disability Insurance (SSDI) program and the Supplemental Security Income (SSI) program. As of December 2015, approximately 11 million individuals were SSDI beneficiaries, and about 8 million were SSI beneficiaries. SSA currently considers assistive devices in the nonmedical and medical areas of its program guidelines. During determinations of substantial gainful activity and income eligibility for SSI benefits, the reasonable cost of items, devices, or services applicants need to enable them to work with their impairment is subtracted from eligible earnings, even if those items or services are used for activities of daily living in addition to work. In addition, SSA considers assistive devices in its medical disability determination process and assessment of work capacity. The Promise of Assistive Technology to Enhance Activity and Work Participation provides an analysis of selected assistive products and technologies, including wheeled and seated mobility devices, upper-extremity prostheses, and products and technologies selected by the committee that pertain to hearing and to communication and speech in adults.
Author: United States. National Advisory Commission on Civil Disorders
Publisher:
ISBN:
Category : African Americans
Languages : en
Pages : 450
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Book Description
Author: William Frederick Doolittle
Publisher: Legare Street Press
ISBN: 9781015736184
Category : History
Languages : en
Pages : 0
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Book Description
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: Leslie Kean
Publisher: Crown
ISBN: 0307717089
Category : Body, Mind & Spirit
Languages : en
Pages : 362
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Book Description
NEW YORK TIMES BESTSELLER • Impeccably researched, this riveting journalistic investigation separates fact from fiction, and documents the unexplained mysteries of—and government reactions to—actual UFOs. “A treasure trove of insightful and eye-opening information.”—Michio Kaku, PH.D., bestselling author of Physics of the Future Leslie Kean, a veteran investigative reporter who has spent the past ten years studying the still-unexplained UFO phenomenon, reviewed hundreds of government documents, aviation reports, radar data, and case studies with corroborating physical evidence. She interviewed dozens of high-level officials and aviation witnesses from around the world. Among them, five Air Force generals and a host of high-level sources—including Fife Symington III, former governor of Arizona, and Nick Pope, former head of the British Defence Ministry’s UFO Investigative Unit—have written their own breathtaking, firsthand accounts about UFO encounters and investigations exclusively for this book. With the support of former White House chief of staff John Podesta, Kean lifts the veil on decades of U.S. government misinformation about this mysterious phenomenon and presents irrefutable evidence that unknown flying objects—metallic, luminous, and seemingly able to maneuver in ways that defy the laws of physics—actually exist. With a Foreword by John Podesta “The most important book on the phenomenon in a generation.”—Journal of Scientific Exploration “Written with penetrating depth and insight, the revelations in this book constitute a watershed event in lifting the taboo against rational discourse about this controversial subject.”—Harold E. Puthoff, PH.D., Director of the Institute for Advanced Studies at Austin “Kean presents the most accurate, most credible reports on UFOs you will ever find. She may not have the final smoking gun, but I smell the gunpowder.”—Miles O’Brien, science correspondent for PBS’s NewsHour
