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SQL Advanced Videos #5: Hash Join
 
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The last of the three physical join operator and by far the most interesting one. However we pay a price in terms of memory for that interesting join :) #sql #database #hashjoin #hash #join
Views: 868 SQL TV
Hash Join
 
04:05
#Oracle #HashJoin How a Hash Join is executed
Views: 1487 Hemant K Chitale
SQL Joins, nested loops and all that in less than 6 minutes
 
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CAPTIONS AVAILABLE - Full transcript (with some screenshots) available for a small fee at http://stores.lulu.com/konagora/. A very brief description of how a database performs a join, based on material from a 2-day seminar.
Views: 76023 roughsealtd
Database Engine and Join Algorithms
 
03:07
Animated demonstration of how the database engine and join algorithms: nested loop, merge scan, hash joins work. For free SQL Server query health check, go to: www.sqlprofiler.com
Views: 21531 SQLProfiler.com
What is the hash join in Oracle
 
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What is the hash join in Oracle - Find out more explanation for : 'What is the hash join in Oracle' only from this channel. Information Source: google
Views: 96 atunakai8c
AskTOM Office Hours: Hash Joins and Database In-Memory
 
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Held on April 20 2018 Andy Rivenes (@TheInMemoryGuy) and Maria Colgan (@SQLMaria) focused on a deep dive into hash joins and how they are used with Database In-Memory to make joins lightning fast. The session began by reviewing how traditional hash joins work and then addressed Bloom filters and how Database In-Memory uses them to effectively turn hash joins into scan and filter operations. The use of Join Groups was then discussed as a way to further enhance join performance in 12.2 and beyond. AskTOM Office Hours offers free, monthly training and tips on how to make the most of Oracle Database, from Oracle product managers, developers and evangelists. https://asktom.oracle.com/ Oracle Developers portal: https://developer.oracle.com/ Sign up for an Oracle Cloud trial: https://cloud.oracle.com/en_US/tryit music: bensound.com
Views: 281 Oracle Developers
14.412 Simple Hash Join
 
08:57
My book "Patterns in Data Management" is now available both as an ebook or a print book (with color graphics!). See: http://amzn.to/1Ts3rwx This book is not a standard textbook on database techniques. This book was written extending and complementing preexisting educational videos (including this one). Video for my inverted classroom "Database Systems". The complete list of videos, slides, and additional material is (will be) available at http://datenbankenlernen.de Computer Science, Saarland University: Bachelor (in German): http://www.cs.uni-saarland.de/index.p... Master (in English): http://www.cs.uni-saarland.de/index.p... Ph.D./Grad School: http://gradschool.cs.uni-saarland.de/
T-SQL: JOIN OPERATORS - NESTED LOOP JOIN, MERGE JOIN AND HASH JOIN
 
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In this video, I will describe the 3 Join Operators SQL Server uses and the reason why it comes to the individual selections by the Optimizer. Please check my blog azizsharif.blogspot.com for more videos!
SQL Server Quickie #13 - Hash Join Operator
 
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In this SQL Server Quickie I'm talking about the Hash Join operator in SQL Server. You can find the scripts that were used for the demonstration here: http://www.sqlpassion.at/archive/2014/04/29/sql-server-quickie-13-hash-join-operator/
Views: 11745 SQLpassion
Main-Memory Join Algorithms: Sort or Hash?
 
01:17:58
The classical wisdom is that hashing is preferred method to implement joins in main memory. But this wisdom is now many years, if not decades, old and hardware has evolved considerably in the meantime. In this talk I will discuss join strategies for execution in main memory, including hash and sort-merge variants. The runtime characteristics of either strategy depends critically on a suitable implementation that respects the intricacies of modern hardware architectures. I will show how hash and sort-merge joins can be implemented to maximally benefit from hardware features like vector processing (SIMD), multi-level caches, multi-core parallelism, or NUMA-style memory arrangement. And I will point to pitfalls that could mis-guide conclusions about the �best� join implementation strategy. The join implementations discussed outperform the state of the art in join processing by several factors. Experiments on modern hardware platforms indicate that the sort-merge strategy is about to surpass hashing in upcoming hardware architectures�which might put classical wisdom upside-down.
Views: 314 Microsoft Research
32. Anti Join in Oracle
 
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In this video you will learn about Anti Join in Oracle. Anti Join returns rows from the first table where no matches are found in the second table. For Support =========== Email: [email protected] Contact Form: http://www.learninhindi.com/home/contact Our Social Media ================ Facebook: https://www.facebook.com/LearnInHindi Twitter: https://twitter.com/LearnInHindi For Training & Videos ===================== For more videos and articles visit: http://www.learninhindi.com Free Java Programming In Hindi Course ===================================== https://www.youtube.com/playlist?list=PLOZ3jentlCDAwwhMyoLISrxkXTADGp7PH Free Oracle PL/SQL Programming In Hindi Course ============================================== https://www.youtube.com/playlist?list=PLB5DA82419C2D99B6 Free C Programming In Hindi Course ================================== https://www.youtube.com/playlist?list=PLOZ3jentlCDAxKpBLMWogxSdy6BZcsAJq Trips & Tricks Channel ====================== https://www.youtube.com/channel/UCGmLfkuCo-3lHHJXRJ9HUMw Programming in Hindi Channel ============================ https://www.youtube.com/channel/UCudElIDgwNrybeAvXIy1HZQ
Views: 16585 ITORIAN
Hash Partitioning in Oracle
 
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The Video explains Hash partitioning in oracle and how it focuses on equal data distribution. It explains how hash partitioning uses partition joins to improve performance in VLDB by MPP.
Views: 4197 Tech Coach
What is a Hash Partition in Oracle
 
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What is a Hash Partition in Oracle SQL Tutorial SQL Tutorial for beginners PLSQL Tutorial PLSQL Tutorial for beginners PL/SQL Tutorial PL SQL Tutorial PL SQL Tutorial for beginners PL/SQL Tutorial for beginners Oracle SQL Tutorial
Views: 712 TechLake
Hash Partition in Oracle
 
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This course has been designed to impart the in-depth knowledge about the partitioning types and architecture in the Oracle RDBMS. For more information on this course, please visit https://www.koenig-solutions.com/oracle-database-12-c-implement-partitioning-training.aspx
Views: 52 Koenig Solutions
14.416 Sort-Merge Join, Co-Grouping
 
18:31
My book "Patterns in Data Management" is now available both as an ebook or a print book (with color graphics!). See: http://amzn.to/1Ts3rwx This book is not a standard textbook on database techniques. This book was written extending and complementing preexisting educational videos (including this one). Video for my inverted classroom "Database Systems". The complete list of videos, slides, and additional material is (will be) available at http://datenbankenlernen.de Computer Science, Saarland University: Bachelor (in German): http://www.cs.uni-saarland.de/index.p... Master (in English): http://www.cs.uni-saarland.de/index.p... Ph.D./Grad School: http://gradschool.cs.uni-saarland.de/
SQL Advanced Videos REUPLOAD #3: Nested Loop Join
 
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I talk about the first of three physical #join operator. We begin with #NestedLoopJoin, the most simple and known physical JOIN Operator in #SQL. This is a re-upload of my old video due to many complaints about the annoying background music. Join my discord: https://discord.gg/5aWE33f
Views: 425 SQL TV
Oracle - Joins - Beginner
 
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Oracle - Joins - Beginner
Views: 26251 Chris Ostrowski
Hash Join
 
01:25
Views: 10687 mrjazzs
Focus on Hash Joins - Using Database In-Memory
 
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Ask TOM Office Hours demo - Focus On Hash Joins This demonstration reviews how Database In-Memory uses Hash Joins and Bloom filters to provide up to a 10x performance improvement. You can see the full session and join us for more Office Hours sessions at https://asktom.oracle.com/pls/apex
11g Nested Loop
 
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#Oracle #NestedLoop 11g Enhancement
Views: 652 Hemant K Chitale
Oracle Hints Tutorial for improving performance
 
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Oracle Hints Tutorial for improving performance APPEND PARALLEL JOIN INDEX NO_INDEX SELECT /*+ FIRST_ROWS(10) */ * FROM emp WHERE deptno = 10; SELECT /*+ ALL_ROWS */ * FROM emp WHERE deptno = 10; SELECT /*+ NO_INDEX(emp emp_dept_idx) */ * FROM emp, dept WHERE emp.deptno = dept.deptno; SELECT /*+ INDEX(e,emp_dept_idx) */ * FROM emp e WHERE e.deptno = 10; -- SELECT /*+ INDEX(scott.emp,emp_dept_idx) */ * FROM scott.emp; SELECT /*+ AND_EQUAL(e,emp_dept_idx) */ * FROM emp e; SELECT /*+ INDEX_JOIN(e,emp_dept_idx) */ * FROM emp e; SELECT /*+ PARALLEL_INDEX(e,emp_dept_idx , 8) */ * FROM emp e; SELECT /*+ LEADING (dept) */ * FROM emp, dept WHERE emp.deptno = dept.deptno; SELECT /*+ PARALLEL(8) CACHE (e) FULL (e) */ * FROM emp e ; SELECT /*+ PARALLEL FULL (e) */ * FROM emp e ; SELECT /*+ PARALLEL USE_MERGE (emp dept) */ * FROM emp, dept WHERE emp.deptno = dept.deptno; -- SORT Merge Join SELECT /*+ PARALLEL USE_HASH (emp dept) */ * FROM emp, dept WHERE emp.deptno = dept.deptno; -- Hash Join SELECT /*+ PARALLEL */ * FROM emp e ; INSERT /*+ APPEND */ INTO mytmp select /*+ CACHE (e) */ *from emp e; commit;
Views: 5003 TechLake
Query Processing - Hash Join, Recursive Partitioning, Complex Joins
 
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Complete set of Video Lessons and Notes available only at http://www.studyyaar.com/index.php/module/28-query-processing-and-optimization Hash Join Algorithm Explanation, Hash Join: Restriction on 'n', Recursive Partitioning, Complex Joins: Algorithms, Duplicate Elimination: Algorithms, Projections: Algorithm, Aggregation: Algorithms, Set Operations: Algorithms, Outer Join: Algorithms, Modified Merge Join, Hash Join http://www.studyyaar.com/index.php/module-video/watch/73-query-processing-complex-joins-duplicate-elimination-and-other-operations-algorithms
Views: 3431 StudyYaar.com
14.452 Double-Pipelined Hash Join, Relationship to Index Nested-Loop Join
 
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Video for my inverted classroom "Database Systems". The complete list of videos, slides, and additional material is (will be) available at http://datenbankenlernen.de Computer Science, Saarland University: Bachelor (in German): http://www.cs.uni-saarland.de/index.php?id=52&L=1 Master (in English): http://www.cs.uni-saarland.de/index.php?id=132&L=1 Ph.D./Grad School: http://gradschool.cs.uni-saarland.de/
SQL Server Quickie #12 - Nested Loop Operator
 
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In this SQL Server Quickie I'm talking about the Nested Loop operator in SQL Server. You can find the scripts that were used for the demonstration here: http://www.sqlpassion.at/archive/2014/03/31/sql-server-quickie-12-nested-loop-operator
Views: 6736 SQLpassion
Parallel Hash Join
 
05:47
Views: 529 CS186Berkeley
Oracle Hints explained
 
42:56
Oracle Hints
Views: 348 Telugu Blast News
What is the HASH PARTITION in Oracle ?
 
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Hi guys in my today scenario I'm going to explain with you What is the HASH PARTITION in Oracle, Oracle database Unbeatable,Unbreakable Platform.. #WhatisHASHPARTITION
Views: 7196 Oracle World
Focus on Hash Joins - Join Groups
 
05:53
Ask TOM Office Hours demo - Focus On Hash Joins This demonstration reviews how Database In-Memory can use Join Groups to further improve hash join performance. You can see the full session and join us for more Office Hours sessions at https://asktom.oracle.com/pls/apex/f?p=100:551:::NO:551:P551_CLASS_ID:3843:
Query Processing - Block Nested Loop Join, Index Nested Loop Join, Merge Join, Hash Join
 
05:01
Complete set of Video Lessons and Notes available only at http://www.studyyaar.com/index.php/module/28-query-processing-and-optimization Block Nested Loop Join, Index Nested Loop Join, Merge Join, Hash Join http://www.studyyaar.com/index.php/module-video/watch/72-query-processing-more-join-algorithms
Views: 25326 StudyYaar.com
A Story of Indexes and Full Table Scans: Finding All the Red Sweets Part 1
 
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"Why isn't Oracle using my index?!" is a common question people have when tuning SQL queries. In this episode Chris compares two methods for finding all the red candies from party bags he's prepared. He shows how these are like a full table scan and an index range scan. He goes on to compare the performance of these two approaches. He shows when a full table scan becomes more efficient than an index range scan and vice versa. ============================ The Magic of SQL with Chris Saxon Copyright © 2015 Oracle and/or its affiliates. Oracle is a registered trademark of Oracle and/or its affiliates. All rights reserved. Other names may be registered trademarks of their respective owners. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the “Materials”). The Materials are provided “as is” without any warranty of any kind, either express or implied, including without limitation warranties or merchantability, fitness for a particular purpose, and non-infringement.
Views: 7506 The Magic of SQL
Three SQL Server join operators in three minutes
 
03:01
This is a quick overview of the three types of join operators you'll find in a SQL Server execution plan; the Hash Match, the Nested Loop Join and the Merge Join. Check out my blog, https://sqlsunday.com/ or follow me on twitter: https://twitter.com/dhmacher
5. Базы данных. Индексы и производительность | Технострим
 
02:40:56
Слайды лекции: https://bozaro.github.io/tech-db-lectures/05/ ► Другие лекции курса: https://www.youtube.com/playlist?list=PLrCZzMib1e9oOFQbuOgjKYbRUoA8zGKnj Подробнее о курсе: https://park.mail.ru/curriculum/program/discipline/218/ Лекция читается в рамках образовательного проекта "Технопарк Mail.ru Group" при МГТУ им.Баумана. КРАТКОЕ СОДЕРЖАНИЕ: Лекция посвящена индексам и производительности. А так же: протоколированию запросов, плану запросов EXPLAIN, стратегиям запросов и JOINS. Хронометраж: 00:00:04 О теме лекции 00:00:47 Индексирование. Введение в индексы БД 00:01:55 Варианты индексов. btree - сбалансированное дерево 00:03:56 Индексирование btree (особенности) 00:06:27 hash-индексы 00:08:29 Индексирование hash (особенности). Коллизии hash-индексов 00:11:12 Некоторые типы данных с которыми ни btree, ни hash не работают 00:12:17 Индексирование GiST (R-Tree) 00:13:36 Индексирование GIN (инвертированный) 00:14:39 Индексирование: битовый индекс 00:17:20 Частичный индекс 00:20:35 Функциональный индекс 00:22:19 Кластерный индекс 00:25:45 Покрывающий индекс 00:28:35 Индексирование. "Расплата" 00:30:34 Как создается индекс? 00:32:59 Индексирование. Итог ("подытоживание") 00:35:25 Вопрос из зала по hash-индексам 00:38:07 Большой выигрыш при использовании покрывающих индексов 00:38:44 Ответы на вопросы по индексированию 00:48:30 Тестовая БД для рассмотрения работы индексов 00:54:08 Как выполняется простой запрос? (Тестовая БД) 00:59:44 Как выполняется запрос? (Два условия и два индекса) 01:07:00 Как выполняется запрос? (Сортировка и индексы) 01:09:59 JOIN-стратегии 01:17:10 Профилирование 01:19:16 Несколько вариантов поиска запросов, которые создают основную нагрузку на сервер 01:19:23 Вариант 1 - Статистика запросов 01:22:44 Вариант 2 - Протоколирование запросов 01:25:50 Логирование в CSV 01:27:15 Протоколирование запросов (нюансы) 01:28:41 На что важно обратить внимание при чтении отчетов 01:32:03 EXPLAIN 01:36:08 Параметр ANALYZE (важная ремарка) 01:36:37 EXPLAIN: Некоторые особенности работы 01:37:57 EXPLAIN: Начало 01:39:09 Что такое стоимость? О единицах времени 01:40:37 EXPLAIN: Статистика 01:42:20 EXPLAIN: ANALYZE 01:45:17 EXPLAIN: WHERE 01:48:46 EXPLAIN: TEXT 01:56:52 EXPLAIN: ORDER BY 02:00:40 EXPLAIN: JOIN 02:05:34 EXPLAIN: На что обратить внимание? 02:07:20 EXPLAIN: Разбор примера из тестовой БД 02:08:06 EXPLAIN: Графическое представление 02:09:32 EXPLAIN: Текстовое представление 02:10:31 EXPLAIN: Добавляем индексы 02:21:03 Чем плохи подзапросы? 02:29:02 По поводу производительности 02:36:45 Покрывающий индекс (Продолжение разбора примера из тестовой БД) ------------------------ О КАНАЛЕ: Официальный канал образовательных проектов Mail.Ru Group ► Нажмите здесь для подписки ‣ http://www.youtube.com/TPMGTU?sub_confirmation=1 Актуальные лекции и мастер-классы о программировании от лучших IT-специалистов. Если вы увлечены мобильной и веб-разработкой, присоединяйтесь! Наши проекты: Технопарк при МГТУ им. Баумана ‣ https://park.mail.ru Техносфера при МГУ им. Ломоносова ‣ https://sphere.mail.ru Технотрек при МФТИ ‣ https://track.mail.ru Техноатом при МИФИ - https://atom.mail.ru Технополис при СПбПУ - https://polis.mail.ru ------------------------ МЫ В СЕТИ: Технопарк в ВК | http://vk.com/tpmailru Техносфера в ВК | https://vk.com/tsmailru Технотрек в ВК | https://vk.com/trackmailru Техноатом в ВК | https://vk.com/technoatom Технополис в ОК: https://www.ok.ru/technopolis Технополис в ВК: https://vk.com/technopolis_ok Блог на Хабре | http://habrahabr.ru/company/mailru
Nested loop join
 
00:37
I created this video with the YouTube Video Editor (http://www.youtube.com/editor)
Views: 3922 Olivier Berthommé
Semi Join in Oracle Database
 
07:32
Oracle Semi Join
Views: 38 Adam Tech
Joins in Oracle (Tested in Oracle 12c)
 
19:37
Learn various SQL syntax of joins in ORACLE.
Views: 342 Vinay Singh
Join Methods: Nested Loop, Hash, Sort, Merge, Adaptive
 
12:47
Here is a replay of the live demo I did at POUG 2018 to explain the join methods. sql monitor to show the execution plan in real time and gdb breakpoints to stop on the different operations. I'll do the same at DOAG and maybe more. Follow https://medium.com/@FranckPachot/conferences-2018-7b821155591 to be informed.
Views: 274 Franck Pachot
Oracle SQL Join Tutorials
 
19:48
Oracle SQL Join Tutorials. Different types of joins and examples. For Full Course Experience Please Go To http://mentorsnet.org/course_preview?course_id=4 Full Course Experience Includes 1. Access to course videos and exercises 2. View & manage your progress/pace 3. In-class projects and code reviews 4. Personal guidance from your Mentors
Views: 101670 Oresoft LWC
Oracle Tutorial - HASH partition step by step part - 3 ✓
 
02:35
In this video i'm discus with you how to create hash partition in oracle step by step. #hash #partition #oracletutorial #oracle website:- www.ocptechnology.com #oracle12c
Views: 3010 OCP Technology
Focus on Hash Joins - Multiple Bloom Filters
 
04:21
Ask TOM Office Hours demo - Focus On Hash Joins This demonstration reviews how Database In-Memory can use multiple Bloom filters to provide up to a 10x performance improvement. You can see the full session and join us for more Office Hours sessions at https://asktom.oracle.com/pls/apex
PL/SQL Tutorial 17-NESTED LOOP  in (PL/SQL)Oracle Database By JavaInHand (in Hindi)
 
07:17
NESTED LOOP IN PL/SQL? ---------------------------------------- SYNTAX OF NESTED TABLE IN PL/SQL -------------------------------------------------------------- EXAMPLE OF NESTED LOOP IN PL/QL
Views: 477 JavaInHand
Joins in Oracle
 
27:37
This is a demo intro video about Oracle and Joins in oracle to understand how we teach our students.
14.410 Applications of Join Algorithms, Nested-Loop Join, Index Nested-Loop Join
 
12:04
My book "Patterns in Data Management" is now available both as an ebook or a print book (with color graphics!). See: http://amzn.to/1Ts3rwx This book is not a standard textbook on database techniques. This book was written extending and complementing preexisting educational videos (including this one). Video for my inverted classroom "Database Systems". The complete list of videos, slides, and additional material is (will be) available at http://datenbankenlernen.de Computer Science, Saarland University: Bachelor (in German): http://www.cs.uni-saarland.de/index.p... Master (in English): http://www.cs.uni-saarland.de/index.p... Ph.D./Grad School: http://gradschool.cs.uni-saarland.de/
Oracle   joins Part -4 by dinesh
 
17:31
DURGASOFT is INDIA's No.1 Software Training Center offers online training on various technologies like JAVA, .NET , ANDROID,HADOOP,TESTING TOOLS , ADF, INFORMATICA,TABLEAU,IPHONE,OBIEE,ANJULAR JS, SAP... courses from Hyderabad & Bangalore -India with Real Time Experts. Mail us your requirements to [email protected] so that our Supporting Team will arrange Demo Sessions. Ph:Call +91-8885252627,+91-7207212428,+91-7207212427,+91-8096969696. http://durgasoft.com http://durgasoftonlinetraining.com https://www.facebook.com/durgasoftware http://durgajobs.com https://www.facebook.com/durgajobsinfo............
Joins in SQL Server Execution Plans
 
08:47
Understanding the different join types and where they apply is an important part of reading and understanding execution plans in SQL Server. I introduce the four joins; nested loops, hash, merge and adaptive. For more on adaptive joins, here's another video I made: https://youtu.be/Oxj3HilCnko #sqlserver #performancetuning #executionplan -~-~~-~~~-~~-~- Please watch: "Extended Events Live Data Window " https://www.youtube.com/watch?v=UDtXjewvqmM -~-~~-~~~-~~-~-
Views: 134 Grant Fritchey
Partitioning in Oracle Explained with Real project Examples : Introduction
 
22:43
This Video series will explain partitioning and its use cases referencing real project examples from different domain. It will explain what when and why of partitioning in a simple but elaborate manner. This is the 1st video which explains why partitioning is required and what are the advantages we gain from it. The following videos will explain when should we do it and how.
Views: 18166 Tech Coach

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