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Learn Oracle SQL : The Hierarchical Query Clause
 
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http://bit.ly/oracle-sql-course | Get the complete course today. Learn Oracle SQL : The Hierarchical Query Clause: In this video, I show you how to use the Hierarchical Query Clause in Oracle SQL to build a basic hierarchical query. This is an excerpt of the course "The Ultimate Oracle SQL Course" which you can get at a heavily discounted price here: http://bit.ly/oracle-sql-course ================ You can find additional Oracle SQL related articles and educational content in my blog here: http://standout-dev.com/
Views: 7035 Oracle SQL
Hierarchical Queries (Oracle)
 
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Hierarchical Queries in Oracle, Using CONNECT BY PRIOR and START WITH clause. Visual Example using a practical scenario.
Views: 4923 CodeSmith 001
Hierarchical Queries in Oracle (CONNECT BY)
 
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This video demonstrates one of the ways to query hierarchical data from Oracle. For more information see: https://oracle-base.com/articles/misc/hierarchical-queries Website: https://oracle-base.com Blog: https://oracle-base.com/blog Twitter: https://twitter.com/oraclebase Cameo by Arjen Visser Blog: http://blog.dbvisit.com/ Twitter: https://twitter.com/dbvisit Website: http://www.dbvisit.com/ Cameo appearances are for fun, not an endorsement of the content of this video.
Views: 27095 ORACLE-BASE.com
Hierarchical Queries: Databases for Developers #16
 
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Often data contains a parent-child relationship between rows in the same table. For example, company org charts and family trees. You can use the power of SQL to traverse these hierarchical relationships. There are two ways to do this in Oracle Database: - Connect By - Recursive With Watch this video to learn about data trees and find out how these work! Further reading: Hierarchical queries in the docs: https://docs.oracle.com/en/database/oracle/oracle-database/18/sqlrf/Hierarchical-Queries.html#GUID-0118DF1D-B9A9-41EB-8556-C6E7D6A5A84E Recursive subquery factoring in 11.2: https://oracle-base.com/articles/11g/recursive-subquery-factoring-11gr2 Take the course! https://devgym.oracle.com/pls/apex/dg/class/databases-for-developers-next-level.html Need help with SQL? Ask us over on AskTOM: https://asktom.oracle.com Twitter: https://twitter.com/ChrisRSaxon Daily SQL Twitter tips: https://twitter.com/SQLDaily All Things SQL blog: https://blogs.oracle.com/sql/ ============================ 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: 2821 The Magic of SQL
006 Connect By clause
 
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Views: 4662 Kartik Mundhra
Learn Oracle SQL : Introduction to Hierarchical Queries
 
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http://bit.ly/oracle-sql-course | Get the complete course today. Learn Oracle SQL : Introduction to Hierarchical Queries: In this video, I explain what hierarchical queries and hierarchical data are, to prepare you to learn about the Hierarchical Query clause. This is an excerpt of the course "The Ultimate Oracle SQL Course" which you can get at a heavily discounted price here: http://bit.ly/oracle-sql-course ============== You can find additional Oracle SQL related articles and educational content in my blog here: http://standout-dev.com/
Views: 1228 Oracle SQL
Hierarchical Queries in Oracle/ عربي
 
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start with & connect by prior Hierarchical Queries in Oracle ملاحظه : اشارة الاكبر غير مسموحة في الوصف --1--- select employee_id, first_name,last_name,manager_id from employees; --2--- select employee_id, first_name,last_name,manager_id from employees where manager_id=100; --3--- select employee_id, first_name,last_name,manager_id from employees where manager_id=101; --4--- select employee_id, first_name,last_name,manager_id from employees where manager_id=108; --5--- select employee_id, first_name,last_name,manager_id from employees where manager_id in (109,110,111,112,113) --6--- select employee_id, first_name,last_name,manager_id from employees start with employee_id=100 connect by prior employee_id=manager_id --top down --7--- select employee_id, first_name,last_name,manager_id from employees start with employee_id=113 connect by prior manager_id =employee_id --buttom up --8--- --let us take this and try to do nice thing --Neena Kochhar work for Steven King select employee_id, first_name,last_name,manager_id from employees start with employee_id=100 connect by prior employee_id=manager_id --top down --9--- select first_name||' '||last_name ||' work for '|| (select first_name||' '||last_name from employees e where e.employee_id=a.manager_id ) from employees a start with employee_id=100 connect by prior employee_id=manager_id --top down --10--- select first_name||' '||last_name ||' work for '|| prior first_name||' '||prior last_name from employees start with employee_id=100 connect by prior employee_id=manager_id --top down --11--- select level,employee_id, first_name,last_name,manager_id from employees start with employee_id=100 connect by prior employee_id=manager_id --top down --1 mean root --2 mean child of root --3 mean child of child , and so on --12--- select level,employee_id, first_name,last_name,manager_id from employees where level=2 start with employee_id=100 connect by prior employee_id=manager_id --13--- select lpad ('khaled',10, 0) from dual --14--- select level, case when level=1 then first_name||' '||last_name when level Greater sign 1 then lpad (first_name||' '||last_name,length(first_name||' '||last_name)+level-1, '-') end tree from employees start with employee_id=100 connect by prior employee_id=manager_id --top down ---------------------- --15--- select employee_id, first_name,last_name,manager_id from employees start with employee_id=100 connect by prior employee_id=manager_id --top down --16--- select employee_id, first_name,last_name,manager_id from employees start with employee_id=100 connect by manager_id= prior employee_id --top down
Views: 2591 khaled alkhudari
15 Hierarchical Queries
 
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Views: 6570 Husnah Hasan
Lead , Lag ,  First Value , Last Value ,  Keep First , Keep Last | Oracle SQL Tutorial | Mr.Murali
 
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Lead , Lag , First Value , Last Value , Keep First , Keep Last in Oracle SQL | Oracle SQL Tutorial | Mr.Murali ►For Registration : https://goo.gl/r6kJbB ►Call: +91-8179191999 ► Visit Our Website: http://nareshit.in/ http://nareshit.com/ ► About NareshIT: "Naresh IT is the Best Software Training Institute for Hadoop, Salesforce, AWS, DevOps, Sprak, Data Science, Python, Tableau, RPA ,Java, C#.NET, ASP.NET, Oracle, Testing Tools, Silver light, Linq, SQL Server, Selenium, Android, iPhone, C Language, C++, PHP and Digital Marketing in Hyderabad, Chennai and Vijayawada, India which provides online and classroom training classes" ►For Registration : https://goo.gl/r6kJbB ►Call: India- 8179191999, USA- 404-232-9879 Email: [email protected] ►Our Online Training Features: 1.Training with Real-Time Experts 2.Industry Specific Scenario’s 3.Flexible Timings 4.Soft Copy of Material 5.Share Video's of each and every session. Check The Below Links: ►For Course Reg : https://goo.gl/r6kJbB ► Subscribe to Our Channel: https://goo.gl/q9ozyG ► Circle us on G+: https://plus.google.com/NareshIT ► Like us on Facebook: https://www.facebook.com/NareshIT ► Follow us on Twitter: https://twitter.com/nareshitech ► Visit Our Website: http://nareshit.in/ http://nareshit.com/
Views: 10051 Naresh i Technologies
Analytical Functions in oracle explained with real examples
 
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This video explains analytical functions and how they are implemented in real projects. Analytical functions are somewhat similar to aggregate functions,but they offer much more. Why use analytical function ? They allow you to write fast and concise queries which otherwise will involve self join and long processing times They allow you to perform aggregate functions independently on sets of partitions. You can access values from previous rows in current row and you can restrict the window on which you want to apply this analytical function. I have given additional practice exercises along with the dataset so that you can comfortably work with analytical functions. You can find the sample problems along with dataset in the below link. http://www.internshipsfromhome.com/oracle-analytical-functions-ddl-and-dml/
Views: 17638 Tech Coach
Writing "HIERARCHICAL SQL QUERIES"
 
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Follow the full step by step: http://www.bisptrainings.com/courses/Informatica Follow us on Facebook: https://www.facebook.com/bisptrainings/ Followus on Twitter: https://twitter.com/bisptrainings http://www.bisptrainings.com Email: [email protected] Call us: +91 975-275-3753 or +1 386-279-6856
Views: 1919 Amit Sharma
Recursive Subquery Factoring : Hierarchical Queries Using Recursive WITH Clauses
 
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This video demonstrates one of the ways to query hierarchical data from Oracle. For more information see: https://oracle-base.com/articles/11g/recursive-subquery-factoring-11gr2 Website: https://oracle-base.com Blog: https://oracle-base.com/blog Twitter: https://twitter.com/oraclebase Cameo by Jeff Smith Blog: http://www.thatjeffsmith.com Twitter: https://twitter.com/thatjeffsmith Cameo appearances are for fun, not an endorsement of the content of this video.
Views: 10672 ORACLE-BASE.com
Flashback Query
 
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This video gives an overview of the Flashback Query functionality in Oracle, which can be used to display data how it was at a previous point in time. For more information see: https://oracle-base.com/articles/10g/flashback-10g Website: https://oracle-base.com Blog: https://oracle-base.com/blog Twitter: https://twitter.com/oraclebase Cameo by Dina Blaschczok : Twitter : https://twitter.com/DinaBlaschczok Cameo appearances are for fun, not an endorsement of the content of this video. All trademarks, product names and logos are the property of their respective owners.
Views: 1939 ORACLE-BASE.com
Oracle Partition By clause, Oracle Analytic Functions tutorial
 
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More about analytic functions, visit http://www.learn-with-video-tutorials.com Oracle Analytic Functions and Over By Partition clause enable calculating cumulative and moving aggregates returning multiple rows for each group.
Simple Recursion in SQL
 
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A simple example of recursion using SQL Server and Common Table Expressions (CTEs). Thanks to +Nikola Gujanicic for the request.
Views: 21200 Database by Doug
Grandparent, parent and child hierarchy SQL server or Bread Crumb
 
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In this video general concept of getting parent child records and also hierarchy bread crumb generation is done also along with this exceptions which generally comes while making recursive CTE are also discussed and showed how to solve them. To get script of table as well as queries please check link below: http://www.techsapphire.in/index/grandparent_parent_and_child_hierarchy_sql_server_or_bread_crumb/0-170
Views: 15246 techsapphire
Oracle Interview Questions: Dual table in Oracle
 
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This video is the 2nd video in the video series Oracle Interview questions.It explains dual table in oracle along with the advantages that it offers. Below tutorial explains how you can generate test data in oracle using oracle table and hierarchical queries. https://www.youtube.com/watch?v=Lf8m9lXNPnc&t=25s
Views: 2290 Tech Coach
ORACLE SQL AND PL/SQL INTERVIEW QUESTION : PRINT 1 TO 5 USING SQL
 
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This video explains on the oracle sql interview question to print 1 to 5 on the screen using only oracle sql statement. The solution is given using the union operator and also by using the hierarchical queries.
Views: 2575 Kishan Mashru
Part 2   SQL query to get organization hierarchy
 
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Link for all dot net and sql server video tutorial playlists http://www.youtube.com/user/kudvenkat/playlists Link for slides, code samples and text version of the video http://csharp-video-tutorials.blogspot.com/2014/05/part-2-sql-query-to-get-organization.html To get the best out of this video, the following concepts need to be understood first. These are already discussed in SQL Server Tutorial. 1. Self-Join - http://www.youtube.com/watch?v=qnYSN_7qwgg 2. CTE - http://www.youtube.com/watch?v=ZXB5b-7HJHk 3. Recursive CTE - http://www.youtube.com/watch?v=GGoV0wTMCg0 Here is the problem definition: 1. Employees table contains the following columns a) EmployeeId, b) EmployeeName c) ManagerId 2. If an EmployeeId is passed, the query should list down the entire organization hierarchy i.e who is the manager of the EmployeeId passed and who is managers manager and so on till full hierarchy is listed. For example, Scenario 1: If we pass David's EmployeeId to the query, then it should display the organization hierarchy starting from David. Scenario 2: If we pass Lara's EmployeeId to the query, then it should display the organization hierarchy starting from Lara. We will be Employees table for this demo. SQL to create and populate Employees table with test data Create table Employees ( EmployeeID int primary key identity, EmployeeName nvarchar(50), ManagerID int foreign key references Employees(EmployeeID) ) GO Insert into Employees values ('John', NULL) Insert into Employees values ('Mark', NULL) Insert into Employees values ('Steve', NULL) Insert into Employees values ('Tom', NULL) Insert into Employees values ('Lara', NULL) Insert into Employees values ('Simon', NULL) Insert into Employees values ('David', NULL) Insert into Employees values ('Ben', NULL) Insert into Employees values ('Stacy', NULL) Insert into Employees values ('Sam', NULL) GO Update Employees Set ManagerID = 8 Where EmployeeName IN ('Mark', 'Steve', 'Lara') Update Employees Set ManagerID = 2 Where EmployeeName IN ('Stacy', 'Simon') Update Employees Set ManagerID = 3 Where EmployeeName IN ('Tom') Update Employees Set ManagerID = 5 Where EmployeeName IN ('John', 'Sam') Update Employees Set ManagerID = 4 Where EmployeeName IN ('David') GO Here is the SQL that does the job Declare @ID int ; Set @ID = 7; WITH EmployeeCTE AS ( Select EmployeeId, EmployeeName, ManagerID From Employees Where EmployeeId = @ID UNION ALL Select Employees.EmployeeId , Employees.EmployeeName, Employees.ManagerID From Employees JOIN EmployeeCTE ON Employees.EmployeeId = EmployeeCTE.ManagerID ) Select E1.EmployeeName, ISNULL(E2.EmployeeName, 'No Boss') as ManagerName From EmployeeCTE E1 LEFT Join EmployeeCTE E2 ON E1.ManagerID = E2.EmployeeId
Views: 280285 kudvenkat
An ultimate approach to converting hierarchical queries from Oracle to SQL Server
 
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One of our customers was migrating their Oracle database to SQL Server. They faced a problem with conversion of multiple database schemas that included over 400 hierarchical queries. We came up with an alternative approach to the conversion of hierarchical queries and managed to complete the project within the required period of time. Learn more about our ultimate conversion solution from this video and the following blog post: https://www.dbbest.com/blog/convert-oracle-hierarchical-queries-sql-server
Hierarchical & Recursive SQL
 
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Get the complete Hierarchical and Recursive SQL course at below link https://www.udemy.com/hierarchical-recursive-sql/?couponCode=SANRUSHA Learn about START WITH, LEVEL,CONNECT_BY_ROOT, SYS_CONNECT_BY_PATH, CONNECT_BY_PATH, CONNECT_BY_LEAF, NOCYCLE , Common Table Expression (CTE)and much more.
Introduction to Hierarchical Query - SQL in Sixty Seconds #012
 
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This video explains the fundamentals of the SQL Server Common Table Expression. Visit http://bit.ly/IGYcEB for Script, Quiz and further learning.
Views: 18803 Pinal Dave
flashback in Oracle | Oracle SQL Tutorial Videos | Mr.Vijay Kumar
 
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Flashback in Oracle SQL Tutorial
Views: 14265 Naresh i Technologies
Part 3   How does a recursive CTE work
 
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Link for all dot net and sql server video tutorial playlists http://www.youtube.com/user/kudvenkat/playlists Link for slides, code samples and text version of the video http://csharp-video-tutorials.blogspot.com/2014/05/part-3-how-does-recursive-cte-work.html A lot of you have asked to explain, how a recursive CTE work line by line. If you have not watched Part 2 already, I strongly recommend to watch that video first before proceeding. In Part 2 of SQL Server Interview questions and answers video series we discussed recursive CTE to retrieve the organization hierarchy. Let's now discuss how the CTE executes line by line. Step 1: Execute the anchor part and get result R0 Step 2: Execute the recursive member using R0 as input and generate result R1 Step 3: Execute the recursive member using R1 as input and generate result R2 Step 4: Recursion goes on until the recursive member output becomes NULL Step 5: Finally apply UNION ALL on all the results to produce the final output
Views: 151834 kudvenkat
GLOBAL TEMPORARY TABLE (GTT) IN ORACLE SQL WITH EXAMPLES
 
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This video demonstrates the usage and working of GTT in oracle SQL. The video shows how internally oracle works with GTT, and also explains the working of ON COMMIT DELETE ROWS and ON COMMIT PRESERVER ROWS in oracle with easy examples.
Views: 8795 Kishan Mashru
SQL: WITH Clause
 
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In this tutorial, you'll learn will learn how to use with clause PL/SQL (Procedural Language/Structured Query Language) is Oracle Corporation's procedural extension for SQL and the Oracle relational database. PL/SQL is available in Oracle Database (since version 7), TimesTen in-memory database (since version 11.2.1), and IBM DB2 (since version 9.7).[1] Oracle Corporation usually extends PL/SQL functionality with each successive release of the Oracle Database. PL/SQL includes procedural language elements such as conditions and loops. It allows declaration of constants and variables, procedures and functions, types and variables of those types, and triggers. It can handle exceptions (runtime errors). Arrays are supported involving the use of PL/SQL collections. Implementations from version 8 of Oracle Database onwards have included features associated with object-orientation. One can create PL/SQL units such as procedures, functions, packages, types, and triggers, which are stored in the database for reuse by applications that use any of the Oracle Database programmatic interfaces. PL/SQL works analogously to the embedded procedural languages associated with other relational databases. For example, Sybase ASE and Microsoft SQL Server have Transact-SQL, PostgreSQL has PL/pgSQL (which emulates PL/SQL to an extent), and IBM DB2 includes SQL Procedural Language,[2] which conforms to the ISO SQL’s SQL/PSM standard. The designers of PL/SQL modeled its syntax on that of Ada. Both Ada and PL/SQL have Pascal as a common ancestor, and so PL/SQL also resembles Pascal in several aspects. However, the structure of a PL/SQL package does not resemble the basic Object Pascal program structure as implemented by a Borland Delphi or Free Pascal unit. Programmers can define public and private global data-types, constants and static variables in a PL/SQL package.[3] PL/SQL also allows for the definition of classes and instantiating these as objects in PL/SQL code. This resembles usage in object-oriented programming languages like Object Pascal, C++ and Java. PL/SQL refers to a class as an "Abstract Data Type" (ADT) or "User Defined Type" (UDT), and defines it as an Oracle SQL data-type as opposed to a PL/SQL user-defined type, allowing its use in both the Oracle SQL Engine and the Oracle PL/SQL engine. The constructor and methods of an Abstract Data Type are written in PL/SQL. The resulting Abstract Data Type can operate as an object class in PL/SQL. Such objects can also persist as column values in Oracle database tables. PL/SQL is fundamentally distinct from Transact-SQL, despite superficial similarities. Porting code from one to the other usually involves non-trivial work, not only due to the differences in the feature sets of the two languages,[4] but also due to the very significant differences in the way Oracle and SQL Server deal with concurrency and locking. There are software tools available that claim to facilitate porting including Oracle Translation Scratch Editor,[5] CEITON MSSQL/Oracle Compiler [6] and SwisSQL.[7] The StepSqlite product is a PL/SQL compiler for the popular small database SQLite. PL/SQL Program Unit A PL/SQL program unit is one of the following: PL/SQL anonymous block, procedure, function, package specification, package body, trigger, type specification, type body, library. Program units are the PL/SQL source code that is compiled, developed and ultimately executed on the database. The basic unit of a PL/SQL source program is the block, which groups together related declarations and statements. A PL/SQL block is defined by the keywords DECLARE, BEGIN, EXCEPTION, and END. These keywords divide the block into a declarative part, an executable part, and an exception-handling part. The declaration section is optional and may be used to define and initialize constants and variables. If a variable is not initialized then it defaults to NULL value. The optional exception-handling part is used to handle run time errors. Only the executable part is required. A block can have a label. Package Packages are groups of conceptually linked functions, procedures, variables, PL/SQL table and record TYPE statements, constants, cursors etc. The use of packages promotes re-use of code. Packages are composed of the package specification and an optional package body. The specification is the interface to the application; it declares the types, variables, constants, exceptions, cursors, and subprograms available. The body fully defines cursors and subprograms, and so implements the specification. Two advantages of packages are: Modular approach, encapsulation/hiding of business logic, security, performance improvement, re-usability. They support object-oriented programming features like function overloading and encapsulation. Using package variables one can declare session level (scoped) variables, since variables declared in the package specification have a session scope.
Views: 13088 radhikaravikumar
Database - SQL WITH Clause
 
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Using the With Clause for complex queries in SQL
Oracle Employee Supervisor Hierarchy Apr16
 
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www.srdtechnologies.in Mobile:+919703756999 eMial: [email protected]
Views: 1232 srd technologies
Oracle SQL Tutorial 9 - Intro to Queries
 
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This video is for beginners who have never worked with SQL Developer, and we are going to teach how to begin writing queries. So the queries we are going to start with are queries when we give the database an expression and it will return back some kind of value. The most common keyword you are going to need to know for Oracle is SELECT. SELECT is the command we use to get data from the database. Even though we have not really put any data in our database, we can still use the SELECT statement to get data. That's because the database is capable of doing more than just creating tables and retrieving data from tables. So our first goal is to essentially write a Hello World, which just displays the text hello world to us. A good place to start is with: SELECT 'Hello World' This would actually work for many database management systems, but when you run it you will get an error. This actually doesn't work with Oracle, it will tell us we always need the FROM keyword. To get around this, there is a magical table called DUAL. We can put anything we want to SELECT and then say FROM DUAL and it will work. SELECT 'Hello World' FROM DUAL We can also do math: SELECT 1+1 FROM DUAL And we can run even run functions: SELECT SYSTIMESTAMP FROM DUAL To put all of this together, you can grab all of this data at the same time using commas to separate different columns from our generated table: SELECT 'Hello World', 1+1, SYSTIMESTAMP FROM DUAL Support me on Patreon: http://www.patreon.com/calebcurry Subscribe to my newsletter: http://bit.ly/JoinCCNewsletter Donate!: http://bit.ly/DonateCTVM2. ~~~~~~~~~~~~~~~Additional Links~~~~~~~~~~~~~~~ More content: http://CalebCurry.com Facebook: http://www.facebook.com/CalebTheVideoMaker Google+: https://plus.google.com/+CalebTheVideoMaker2 Twitter: http://twitter.com/calebCurry Amazing Web Hosting - http://bit.ly/ccbluehost (The best web hosting for a cheap price!)
Views: 26662 Caleb Curry
Hierarchy SQL with a Recursive Query, Copy Paste and Play example
 
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Coconut SQL, Recursive Query, Tree, Hierarchy data
Views: 1079 Coconut SQL
How to use the Oracle SQL PIVOT Clause
 
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PIVOT allows you to "flip a table on its side", i.e. Columns to Rows / Rows to Columns. Previously we did this with DECODE or CASE. As of Oracle 11g, Oracle Database includes the PIVOT clause (and UNPIVOT). Oracle expert Geoff Wiland from SkillBuilders will demonstrate PIVOT, UNPIVOT, including the use of aggregate functions.
Views: 10393 SkillBuilders
oracle query to find second maximum salary in the table
 
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find the second highest salary using sql query
Views: 45 Hari SS
Why Is My Query Slow? More Reasons Storing Dates as Numbers Is Bad
 
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Storing dates as numbers can cause unexpected problems. In this video Chris looks at one possible issue: inconsistent query performance. He then shows methods you can use to improve performance, including function-based indexes and histograms. ============================ 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: 7079 The Magic of SQL
SQL Advanced : Creating the Hierarchy Tree
 
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http://ytwizard.com/r/7yxYc1 http://ytwizard.com/r/7yxYc1 SQL Advanced Lead yourself to enhance your SQL skills and transform into Senior SQL Developer. Learn SQL by doing with me.
Views: 12 Black Hat
Advanced Sql Tutorial (026 Hierarchical Queries Introduction)
 
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Advanced Sql Tutorial (026 Hierarchical Queries Introduction) Lead yourself to enhance your SQL skills and transform into Senior SQL Developer. Learn SQL by doing with me. Senior SQL Developers are in high demand and demand 100k+ salary in the IT industry. If we have to advance in our career and earn a good salary, we need these Advanced SQL skills. So let's take the next step of learning these advanced concepts of Oracle SQL. Thanks For Watching.. Like,Comment,share and Subscribe.
Learn Hierarchies in SQL server using HierarchyID
 
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Hierarchy ID is nothing other then column which represent relational value in numeric format on which DFS (Depth First Search) & BFS (Breadth First Search) can be used The concept is very simple, when we have to make relational structures which shows parent child level tree hierarchy, we can use hierarchyid datatype. With hierarchy ID recursive queries can be converted into range query. DFS (Depth First Search) and BFS (Breadth First Search) can be implemented using additional index which improves performance. Uses .NET assembly library defined methods to provide easy maintenance. Hierarchy ID is scalar column and is sequence of no. of var binary values. For script follow link below: http://www.techsapphire.in/index/learn_hierarchies_in_sql_server_using_hierarchyid/0-173
Views: 8958 techsapphire
Oracle Tutorial || Oracle|Adv Sql | Analytical Functions Part-1 by basha
 
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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......
Benefits of Common Table Expressions
 
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On this episode of Joes 2 Pros SQL server unlocked series we present a topic for anyone who has ever been exposed to SQL Server, Common Table Expressions. A CTE is memory resident table. You are pulling from that query and giving it a name. This table adds enhancements to the old tables. It allows you to open up to new people without having an increased security risk. This is extremely beneficial for anyone who is exposed to SQL Server as keeping your content safe is a top concern for most organizations. In this video, he will take you through a very real example from a department store quarterly reporting. He wants to do a seasonal reporting from all the departments of a store excluding snow sports and cooking. He shows you how to make the code more simple and reduce human error. Having CTE knowledge will be greatly beneficial to you in your everyday career. Please be sure to follow along our blog series. Stay tuned next week to learn more about Dynamic SQL. To learn more about he benefits of common table expressions view our course Developer 2012 Volume 2 Video 10.1. See more at: http://www.joes2pros.com/joes2pros/courses Full Blog: http://joes2prosblog.social27.com/

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