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GROUP BY, ROLLUP and CUBE in Oracle
 
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Here's a quick run through of GROUP BY, ROLLUP and CUBE, along with an example of using the GROUPING function. For more information see: https://oracle-base.com/articles/misc/rollup-cube-grouping-functions-and-grouping-sets Website: https://oracle-base.com Blog: https://oracle-base.com/blog Twitter: https://twitter.com/oraclebase Cameo by Kerry Osborne Blog: http://kerryosborne.oracle-guy.com/ Twitter: https://twitter.com/KerryOracleGuy Cameo appearances are for fun, not an endorsement of the content of this video.
Views: 16750 ORACLE-BASE.com
How to use Oracle SQL ROLLUP and CUBE
 
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Learn how the Oracle Database SQL extensions ROLLUP and CUBE provide additional aggregations for your data warehouse data.
Views: 2292 SkillBuilders
SQL Tutorial for Beginners Group By, Having , CUBE and ROLLUP
 
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Oracle SQL Group By, Having , CUBE and ROLLUP Grouping Functions SQL Tutorial SQL Tutorial for beginners Oracle SQL Tutorial for beginners
Views: 5904 TechLake
Difference between cube and rollup in SQL Server
 
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difference between cube and rollup in sql server 2008 sql server rollup vs cube difference between cube and rollup in sql server 2005 rollup and cube in sql server 2005 In this video we will discuss the difference between cube and rollup in SQL Server. CUBE generates a result set that shows aggregates for all combinations of values in the selected columns, where as ROLLUP generates a result set that shows aggregates for a hierarchy of values in the selected columns. Let us understand this difference with an example. ROLLUP(Continent, Country, City) produces Sum of Salary for the following hierarchy Continent, Country, City Continent, Country, Continent () CUBE(Continent, Country, City) produces Sum of Salary for all the following column combinations Continent, Country, City Continent, Country, Continent, City Continent Country, City Country, City () SELECT Continent, Country, City, SUM(SaleAmount) AS TotalSales FROM Sales GROUP BY ROLLUP(Continent, Country, City) SELECT Continent, Country, City, SUM(SaleAmount) AS TotalSales FROM Sales GROUP BY CUBE(Continent, Country, City) You won't see any difference when you use ROLLUP and CUBE on a single column. Both the following queries produces the same output. SELECT Continent, Sum(SaleAmount) AS TotalSales FROM Sales GROUP BY ROLLUP(Continent) -- OR SELECT Continent, SUM(SaleAmount) AS TotalSales FROM Sales GROUP BY CUBE(Continent) Text version of the video http://csharp-video-tutorials.blogspot.com/2015/09/difference-between-cube-and-rollup-in.html Slides http://csharp-video-tutorials.blogspot.com/2015/09/difference-between-cube-and-rollup-in_24.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists
Views: 43090 kudvenkat
Using ROLLUP & CUBE  in ORACLE/عربي/ Arabic
 
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Using ROLLUP & CUBE in ORACLE Group By clause you can see all my courses in my channel :) Just subscribe
Views: 1173 khaled alkhudari
Practical 5 : Creating Cubes | Oracle 11g Data Warehousing
 
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Creating Cubes in Oracle 11g Data Warehousing. Data Warehousing 5th Practical of Third Year B.Sc.IT. One Solution to all your queries for the Oracle Warehouse builder 11g. --------------------------------------------------------------------------------------------- NOTE : All content used is copyright to ProgrammingFiesta Use or commercial display or editing of the content without proper authorization is not allowed.
Views: 531 PROGRAMMING FIESTA
Difference Between RollUp and Cube in Oracle
 
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cube and rollup in oracle with example difference between rollup and cube in oracle oracle cube tutorial oracle grouping sets oracle rollup grand total subtotal and grand total in oracle
Views: 13 Adam Tech
Rollup in SQL Server
 
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sql server group by rollup sql server 2008 group by rollup group by with rollup example sql rollup example sql server rollup example sql server 2008 rollup examples rollup clause in sql server rollup function in sql server ROLLUP in SQL Server is used to do aggregate operation on multiple levels in hierarchy. Let us understand Rollup in SQL Server with examples. We will use the following Employees table for the examples in this video. Retrieve Salary by country along with grand total There are several ways to achieve this. The easiest way is by using Rollup with GroupBy. SELECT Country, SUM(Salary) AS TotalSalary FROM Employees GROUP BY ROLLUP(Country) The above query can also be rewritten as shown below SELECT Country, SUM(Salary) AS TotalSalary FROM Employees GROUP BY Country WITH ROLLUP We can also use UNION ALL operator along with GROUP BY SELECT Country, SUM(Salary) AS TotalSalary FROM Employees GROUP BY Country UNION ALL SELECT NULL, SUM(Salary) AS TotalSalary FROM Employees We can also use Grouping Sets to achieve the same result SELECT Country, SUM(Salary) AS TotalSalary FROM Employees GROUP BY GROUPING SETS ( (Country), () ) Let's look at another example. Group Salary by Country and Gender. Also compute the Subtotal for Country level and Grand Total as shown below. Using ROLLUP with GROUP BY SELECT Country, Gender, SUM(Salary) AS TotalSalary FROM Employees GROUP BY ROLLUP(Country, Gender) OR SELECT Country, Gender, SUM(Salary) AS TotalSalary FROM Employees GROUP BY Country, Gender WITH ROLLUP Using UNION ALL with GROUP BY SELECT Country, Gender, SUM(Salary) AS TotalSalary FROM Employees GROUP BY Country, Gender UNION ALL SELECT Country, NULL, SUM(Salary) AS TotalSalary FROM Employees GROUP BY Country UNION ALL SELECT NULL, NULL, SUM(Salary) AS TotalSalary FROM Employees Using GROUPING SETS SELECT Country, Gender, SUM(Salary) AS TotalSalary FROM Employees GROUP BY GROUPING SETS ( (Country, Gender), (Country), () ) Text version of the video http://csharp-video-tutorials.blogspot.com/2015/09/rollup-in-sql-server.html Slides http://csharp-video-tutorials.blogspot.com/2015/09/rollup-in-sql-server_20.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists
Views: 54561 kudvenkat
Oracle SQL - #07 Group By estendido - Rollup e Cube
 
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Inscreva-se: https://www.youtube.com/user/fabianoallex?sub_confirmation=1 Veja os demais vídeos da série: http://fabianoallex.blogspot.com.br/2016/02/oracle-sql-comandos-sql-para-oracle.html
Views: 83 Fabiano Arndt
CUBE, ROLLUP in SQL Server
 
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Click here to Subscribe to IT PORT Channel : https://www.youtube.com/channel/UCMjmoppveJ3mwspLKXYbVlg These operators are used with the GROUP BY clause and allow you to create subtotals, grand totals and superset of subtotals The ROLLUP operator is used with the GROUP BY clause. It is used to create subtotals and grand totals for a set of columns. The summarized amounts are created based on the columns passed to the ROLLUP operator The CUBE operators, like the ROLLUP operator produces subtotals and grand totals as well. But unlike the ROLLUP operator it produces subtotals and grand totals for every permutation of the columns provided to the CUBE operator
Views: 392 IT Port
Grouping Sets in SQL Server
 
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grouping sets examples in sql server sql server grouping sets order by grouping sql server 2008 grouping sets example sql server group by union all Grouping sets is a new feature introduced in SQL Server 2008. Let us understand Grouping sets with an example. We want to calculate Sum of Salary by Country and Gender. We can very easily achieve this using a Group By query as shown below Select Country, Gender, Sum(Salary) as TotalSalary From Employees Group By Country, Gender Within the same result set we also want Sum of Salary just by Country. To achieve the above result we could combine 2 Group By queries using UNION ALL as shown below. Select Country, Gender, Sum(Salary) as TotalSalary From Employees Group By Country, Gender UNION ALL Select Country, NULL, Sum(Salary) as TotalSalary From Employees Group By Country Within the same result set we also want Sum of Salary just by Gender. We can achieve this by combining 3 Group By queries using UNION ALL as shown below Select Country, Gender, Sum(Salary) as TotalSalary From Employees Group By Country, Gender UNION ALL Select Country, NULL, Sum(Salary) as TotalSalary From Employees Group By Country UNION ALL Select NULL, Gender, Sum(Salary) as TotalSalary From Employees Group By Gender Finally we also want the grand total of Salary. In this case we are not grouping on any particular column. So both Country and Gender columns will be NULL in the resultset. To achieve this we will have to combine the fourth query using UNION ALL as shown below. Select Country, Gender, Sum(Salary) as TotalSalary From Employees Group By Country, Gender UNION ALL Select Country, NULL, Sum(Salary) as TotalSalary From Employees Group By Country UNION ALL Select NULL, Gender, Sum(Salary) as TotalSalary From Employees Group By Gender UNION ALL Select NULL, NULL, Sum(Salary) as TotalSalary From Employees There are 2 problems with the above approach. The query is huge as we have combined different Group By queries using UNION ALL operator. This can grow even more if we start to add more groups The Employees table has to be accessed 4 times, once for every query. If we use Grouping Sets feature introduced in SQL Server 2008, the amount of T-SQL code that you have to write will be greatly reduced. The following Grouping Sets query produce the same result as the above UNION ALL query. Select Country, Gender, Sum(Salary) TotalSalary From Employees Group BY GROUPING SETS ( (Country, Gender), -- Sum of Salary by Country and Gender (Country), -- Sum of Salary by Country (Gender) , -- Sum of Salary by Gender () -- Grand Total ) The order of the rows in the result set is not the same as in the case of UNION ALL query. To control the order use order by as shown below. Select Country, Gender, Sum(Salary) TotalSalary From Employees Group BY GROUPING SETS ( (Country, Gender), -- Sum of Salary by Country and Gender (Country), -- Sum of Salary by Country (Gender) , -- Sum of Salary by Gender () -- Grand Total ) Order By Grouping(Country), Grouping(Gender), Gender Text version of the video http://csharp-video-tutorials.blogspot.com/2015/09/grouping-sets-in-sql-server.html Slides http://csharp-video-tutorials.blogspot.com/2015/09/grouping-sets-in-sql-server_19.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists
Views: 47775 kudvenkat
Rollup and Cube Clauses in SQL Server | MSSQL Training
 
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Views: 10037 Naresh i Technologies
Working with Rollups and Cubes in SQL
 
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Get certified as a Job Ready Programmer by completing all courses using the following discount link: https://www.jobreadyprogrammer.com/p/all-access-pass/?product_id=87071&coupon_code=100-OFF&preview=logged_out
Views: 2620 Imtiaz Ahmad
Group By, Group sets, Rollup, Cube
 
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Demonstrating the user of Group by Clause, grouping sets, Rollup and Cube Clause with simple examples
Views: 14433 Adith Naveen
Learn Oracle | Using Rollup Function, Cube Function
 
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Pebbles present, Learn Oracle 10g with Step By Step Video Tutorials. Learn Oracle 10g Tutorial series contains the following videos : Learn Oracle - History of Oracle Learn Oracle - What is Oracle - Why do we need Oracle Learn Oracle - What is a Database Learn Oracle - What is Grid Computing Learn Oracle - What is Normalization Learn Oracle - What is ORDBMS Learn Oracle - What is RDBMS Learn Oracle - Alias Names, Concatenation, Distinct Keyword Learn Oracle - Controlling and Managing User Access (Data Control Language) Learn Oracle - Introduction to SQL Learn Oracle - Oracle 10g New Data Types Learn Oracle - How to Alter a Table using SQL Learn Oracle - How to Create a Package in PL SQL Learn Oracle - How to Create a Report in SQL Plus Learn Oracle - How to Create a Table using SQL - Not Null, Unique Key, Primary Key Learn Oracle - How to Create a Table using SQL Learn Oracle - How to Create a Trigger in PL SQL Learn Oracle - How to Delete Data from a Table using SQL Learn Oracle - How to Drop and Truncate a Table using SQL Learn Oracle - How to Insert Data in a Table using SQL Learn Oracle - How to open ISQL Plus for the first time Learn Oracle - How to Open SQL Plus for the First Time Learn Oracle - How to Update a Table using SQL Learn Oracle - How to use Aggregate Functions in SQL Learn Oracle - How to use Functions in PL SQL Learn Oracle - How to use Group By, Having Clause in SQL Learn Oracle - How to Use Joins, Cross Join, Cartesian Product in SQL Learn Oracle - How to use Outer Joins (Left, Right, Full) in SQL Learn Oracle - How to use the Character Functions, Date Functions in SQL Learn Oracle - How to use the Merge Statement in SQL Learn Oracle - How to use the ORDER BY Clause with the Select Statement Learn Oracle - How to use the SELECT Statement Learn Oracle - How to use the Transactional Control Statements in SQL Learn Oracle - How to use PL SQL Learn Oracle - Data Types in PL SQL Learn Oracle - Exception Handling in PL SQL Learn Oracle - PL SQL Conditional Logics Learn Oracle - PL SQL Cursor Types - Explicit Cursor, Implicit Cursor Learn Oracle - PL SQL Loops Learn Oracle - Procedure Creation in PL SQL Learn Oracle - Select Statement with WHERE Cause Learn Oracle - SQL Operators and their Precedence Learn Oracle - Using Case Function, Decode Function in SQL Learn Oracle - Using Logical Operators in the WHERE Clause of the Select Statement Learn Oracle - Using Rollup Function, Cube Function Learn Oracle - Using Set Operators in SQL Learn Oracle - What are the Different SQL Data Types Learn Oracle - What are the different types of Databases Visit Pebbles Official Website - http://www.pebbles.in Subscribe to our Channel – https://www.youtube.com/channel/UCNNjWVsQqaMYccY044vtHJw?sub_confirmation=1 Engage with us on Facebook at https://www.facebook.com/PebblesChennai Please Like, Share, Comment & Subscribe
Views: 584 Pebbles Tutorials
Generating matrix using SQL queries using CUBE, PIVOT and ROLLUP
 
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Generating matrix in SQL is bit tricky, in above lecture you will learn to generate matrix using CUBE and PIVOT, also difference between CUBE and ROLLUP. For downloading script follow link below: http://www.techsapphire.in/index/generating_matrix_using_sql_queries_using_cube_pivot_and_rollup/0-174
Views: 4396 techsapphire
Урок 19. SQL advanced. Сложные группировки rollup groop set cube
 
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Группировки roolup и cube rollup и cube специальные групповые опepации oracle используются вместе с группировкой GROUP BY Oracle SQL. учебная среда https://apex.oracle.com/pls/apex/f?p=4550:1:103440124..::::: схема: SQLADV польз: student1 пароль: student1 будут работать (student2/ student2, student3/ student3 .... student11/ student11) меню SQL Workshop , SQL Command или используйте http://sqlfiddle.com/ скрипт бд для загрузки в sqlfiddle http://sqladv.ru/dev/sql.txt урок и задания http://sqladv.ru/dev/sqladv/l19.txt
Funções Oracle CUBE e ROLLUP
 
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Aprenda a usar as funções de agrupamento Oracle CUBE e ROLLUP e como utilizar essas funções da forma correta com exemplos práticos. SELECT department_id, SUM (salary) FROM hr.employees WHERE department_id IN (30, 20) GROUP BY department_id; SELECT department_id, SUM (salary) FROM hr.employees WHERE department_id IN (30, 20) GROUP BY rollup(department_id); SELECT job_id, department_id, SUM (salary) FROM hr.employees WHERE department_id IN (30, 20) GROUP BY rollup(job_id, department_id) ORDER BY job_id, department_id; SELECT job_id, department_id, SUM (salary) FROM hr.employees WHERE department_id IN (30, 20) GROUP BY rollup(department_id, job_id) ORDER BY job_id, department_id; SELECT job_id, department_id, SUM (salary) FROM hr.employees WHERE department_id IN (30, 20) GROUP BY cube(department_id, job_id) ORDER BY job_id, department_id; SELECT job_id, department_id, SUM (salary) FROM hr.employees WHERE department_id IN (30, 20) GROUP BY cube(job_id, department_id) ORDER BY job_id, department_id; Acesse nosso site: http://aprendaplsql.com/ Assine o nosso canal: https://www.youtube.com/user/AprendaPLSQL?sub_confirmation=1 Siga no Facebook: https://www.facebook.com/Aprenda.PLSQL/
Views: 1049 Aprenda PL/SQL
Advanced SQL Queries in Oracle and SQL Server - What is ROLLUP?
 
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This video clip, on the ROLLUP Extension to GROUP BY, is taken from my www.pluralsight.com course "Advanced SQL Queries in Oracle and SQL Server". Click here to learn more about this course: http://www.pluralsight.com/courses/adv-sql-queries-oracle-sql-server?utm_source=youtube&utm_medium=video&utm_campaign=authordemo.
Views: 2264 sheepsqueezersYT
Oracle OLAP Küpü
 
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- Olap Küpü hakkında genel bilgiler - Oracle AWM'de küp oluşturma ve sorgulama
Views: 1770 Elif Beşli
CUBE AND ROLLUP IN SQL SERVER (URDU / HINDI)
 
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SUBSCRIBE FOR MORE AND PRESS BELL ICON TO GET LATEST VIDEO UPDATES...
Views: 225 Learning Never Ends
07 GROUPING SETS
 
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Views: 109 Moto Nobre
Oracle - SQL - Advanced Grouping
 
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Oracle - SQL - Advanced Grouping Watch more Videos at https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Anadi Sharma, Tutorials Point India Private Limited.
Oracle LISTAGG Function Example and Demonstration
 
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In this lesson Geoff dives into the explanation and demonstration of the LISTAGG aggregate function. See all the lessons in this tutorial - FREE - at http://www.skillbuilders.com/advanced-aggregations-with-oracle-sql.
Views: 2047 SkillBuilders
CUBE, ROLLUP in SQL Server Tamil
 
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Click here to Subscribe to IT PORT Channel : https://www.youtube.com/channel/UCMjmoppveJ3mwspLKXYbVlg These operators are used with the GROUP BY clause and allow you to create subtotals, grand totals and superset of subtotals The ROLLUP operator is used with the GROUP BY clause. It is used to create subtotals and grand totals for a set of columns. The summarized amounts are created based on the columns passed to the ROLLUP operator The CUBE operators, like the ROLLUP operator produces subtotals and grand totals as well. But unlike the ROLLUP operator it produces subtotals and grand totals for every permutation of the columns provided to the CUBE operator
Views: 128 IT Port
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: 17355 Tech Coach
Cube in SQL Server
 
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group by cube in sql server 2008 cube group by sql sql server group by cube example sql server cube group by Cube() in SQL Server produces the result set by generating all combinations of columns specified in GROUP BY CUBE(). Let us understand Cube() in SQL Server with examples. Write a query to retrieve Sum of Salary grouped by all combinations of the following 2 columns as well as Grand Total. Country, Gender Using Cube with Group By SELECT Country, Gender, SUM(Salary) AS TotalSalary FROM Employees GROUP BY Cube(Country, Gender) --OR SELECT Country, Gender, SUM(Salary) AS TotalSalary FROM Employees GROUP BY Country, Gender with Cube The above query is equivalent to the following Grouping Sets query. SELECT Country, Gender, SUM(Salary) AS TotalSalary FROM Employees GROUP BY GROUPING SETS ( (Country, Gender), (Country), (Gender), () ) The above query is equivalent to the following UNION ALL query. While the data in the result set is the same, the ordering is not. Use ORDER BY to control the ordering of rows in the result set. SELECT Country, Gender, SUM(Salary) AS TotalSalary FROM Employees GROUP BY Country, Gender UNION ALL SELECT Country, NULL, SUM(Salary) AS TotalSalary FROM Employees GROUP BY Country UNION ALL SELECT NULL, Gender, SUM(Salary) AS TotalSalary FROM Employees GROUP BY Gender UNION ALL SELECT NULL, NULL, SUM(Salary) AS TotalSalary FROM Employees Text version of the video http://csharp-video-tutorials.blogspot.com/2015/09/cube-in-sql-server.html Slides http://csharp-video-tutorials.blogspot.com/2015/09/cube-in-sql-server_22.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists
Views: 58127 kudvenkat
Oracle sql Interview Question : How to change rows to column
 
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This video tutorial talks about the frequently asked oracle sql interview question of changing rows to the column. Based on the given scenario, we are asked to change the presentation of data in a table with 3 rows and 2 column to 3 columns and 2 rows. Decode Function in oracle https://youtu.be/YUAjPMjqMws Pivot and unpivot in oracle https://youtu.be/6s0DI1YcWIM
Views: 14261 Kishan Mashru
SQL Totals and Sub totals using ROLLUP (with sample scenario)
 
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Totals and Subtotals using ROLLUP in : -- ORACLE SQL select case when c.customer_name is null then 'TOTAL' else c.customer_name end CUST_NAME ,case when lt.name is null then 'SUB-TOTAL' else lt.name end Loan_Type ,sum(lr.loan_amount) from loan_request lr join customers c on c.customer_id=lr.customer_id join loan_types lt on lt.loan_type_id = lr.loan_type_id group by rollup(c.customer_name,lt.name) --MYSQL select case when c.customer_name is null then 'TOTAL' else c.customer_name end CUST_NAME ,case when lt.name is null then 'SUB-TOTAL' else lt.name end Loan_Type ,sum(lr.loan_amount) from loan_request lr join customers c on c.customer_id=lr.customer_id join loan_types lt on lt.loan_type_id = lr.loan_type_id group by c.customer_name,lt.name with rollup
Views: 604 Data Disc
TSQL Rollup and Cube
 
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These have been replaced by Grouping Sets
Views: 125 Ted on MSSQL
Урок 4 : GROUP BY , ROLLUP, CUBE, GROUPING SET, GROUPING, GROUPING ID - MS SQL
 
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1. GROUP BY (MAX , MIN , SUM , AVG , COUNT) 2. ROLLUP , CUBE 3. GROUPING , GROUPING_ID , GROUPING SETS 4. HAVING , ORDER BY
Views: 756 FoxLip News
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: 6898 Oracle 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: 10343 SkillBuilders
MS SQL #13 (GROUP BY, ROLLUP, CUBE)
 
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Witam Serdecznie w poradniku do Microsoft SQL Server, operujemy na darmowym oprogramowaniu Sql Server 2014 Management Studio.
Views: 1422 Albrecht Xerxes
Grouping function in SQL Server
 
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sql server rollup grouping sql server rollup replace null sql server rollup grouping replace null In this video we will discuss the use of Grouping function in SQL Server. This is continuation to Part 104. Please watch Part 104 from SQL Server tutorial before proceeding. What is Grouping function Grouping(Column) indicates whether the column in a GROUP BY list is aggregated or not. Grouping returns 1 for aggregated or 0 for not aggregated in the result set. The following query returns 1 for aggregated or 0 for not aggregated in the result set SELECT Continent, Country, City, SUM(SaleAmount) AS TotalSales, GROUPING(Continent) AS GP_Continent, GROUPING(Country) AS GP_Country, GROUPING(City) AS GP_City FROM Sales GROUP BY ROLLUP(Continent, Country, City) What is the use of Grouping function in real world When a column is aggregated in the result set, the column will have a NULL value. If you want to replace NULL with All then this GROUPING function is very handy. SELECT CASE WHEN GROUPING(Continent) = 1 THEN 'All' ELSE ISNULL(Continent, 'Unknown') END AS Continent, CASE WHEN GROUPING(Country) = 1 THEN 'All' ELSE ISNULL(Country, 'Unknown') END AS Country, CASE WHEN GROUPING(City) = 1 THEN 'All' ELSE ISNULL(City, 'Unknown') END AS City, SUM(SaleAmount) AS TotalSales FROM Sales GROUP BY ROLLUP(Continent, Country, City) Can't I use ISNULL function instead as shown below SELECT ISNULL(Continent, 'All') AS Continent, ISNULL(Country, 'All') AS Country, ISNULL(City, 'All') AS City, SUM(SaleAmount) AS TotalSales FROM Sales GROUP BY ROLLUP(Continent, Country, City) Well, you can, but only if your data does not contain NULL values. Let me explain what I mean. At the moment the raw data in our Sales has no NULL values. Let's introduce a NULL value in the City column of the row where Id = 1 Update Sales Set City = NULL where Id = 1 Now execute the following query with ISNULL function SELECT ISNULL(Continent, 'All') AS Continent, ISNULL(Country, 'All') AS Country, ISNULL(City, 'All') AS City, SUM(SaleAmount) AS TotalSales FROM Sales GROUP BY ROLLUP(Continent, Country, City) Notice that the actuall NULL value in the raw data is also replaced with the word 'All', which is incorrect. Hence the need for Grouping function. Please note : Grouping function can be used with Rollup, Cube and Grouping Sets Text version of the video http://csharp-video-tutorials.blogspot.com/2015/09/grouping-function-in-sql-server.html Slides http://csharp-video-tutorials.blogspot.com/2015/09/grouping-function-in-sql-server_25.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists
Views: 37548 kudvenkat
Oracle - Rollup
 
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Oracle - Rollup
Views: 4 MyungJong Kim
Collections in PL/SQL | Oracle PL/SQL Tutorial Videos | Mr.Vijay Kumar
 
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Collections in PL/SQL PLSQL Tutorial
Views: 26971 Naresh i Technologies
Oracle SQL Functions|Group by clause Part- 1 by Dinesh
 
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GROUPING ID function in SQL Server
 
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grouping_id function in sql server 2008 grouping_id in sql server 2008 example sql server grouping level In this video we will discuss 1. GROUPING_ID function in SQL Server 2. Difference between GROUPING and GROUPING_ID functions 3. Use of GROUPING_ID function GROUPING_ID function computes the level of grouping. Difference between GROUPING and GROUPING_ID Syntax : GROUPING function is used on single column, where as the column list for GROUPING_ID function must match with GROUP BY column list. GROUPING(Col1) GROUPING_ID(Col1, Col2, Col3,...) GROUPING indicates whether the column in a GROUP BY list is aggregated or not. Grouping returns 1 for aggregated or 0 for not aggregated in the result set. GROUPING_ID() function concatenates all the GOUPING() functions, perform the binary to decimal conversion, and returns the equivalent integer. In short GROUPING_ID (A, B, C) = GROUPING(A) + GROUPING(B) + GROUPING(C) Let us understand this with an example. SELECT Continent, Country, City, SUM(SaleAmount) AS TotalSales, CAST(GROUPING(Continent) AS NVARCHAR(1)) + CAST(GROUPING(Country) AS NVARCHAR(1)) + CAST(GROUPING(City) AS NVARCHAR(1)) AS Groupings, GROUPING_ID(Continent, Country, City) AS GPID FROM Sales GROUP BY ROLLUP(Continent, Country, City) Row Number 1 : Since the data is not aggregated by any column GROUPING(Continent), GROUPING(Country) and GROUPING(City) return 0 and as result we get a binar string with all ZEROS (000). When this converted to decimal we get 0 which is displayed in GPID column. Row Number 7 : The data is aggregated for Country and City columns, so GROUPING(Country) and GROUPING(City) return 1 where as GROUPING(Continent) return 0. As result we get a binar string (011). When this converted to decimal we get 10 which is displayed in GPID column. Row Number 15 : This is the Grand total row. Notice in this row the data is aggregated by all the 3 columns. Hence all the 3 GROUPING functions return 1. So we get a binary string with all ONES (111). When this converted to decimal we get 7 which is displayed in GPID column. Use of GROUPING_ID function : GROUPING_ID function is very handy if you want to sort and filter by level of grouping. Sorting by level of grouping : SELECT Continent, Country, City, SUM(SaleAmount) AS TotalSales, GROUPING_ID(Continent, Country, City) AS GPID FROM Sales GROUP BY ROLLUP(Continent, Country, City) ORDER BY GPID Filter by level of grouping : The following query retrieves only continent level aggregated data SELECT Continent, Country, City, SUM(SaleAmount) AS TotalSales, GROUPING_ID(Continent, Country, City) AS GPID FROM Sales GROUP BY ROLLUP(Continent, Country, City) HAVING GROUPING_ID(Continent, Country, City) = 3 Text version of the video http://csharp-video-tutorials.blogspot.com/2015/09/groupingid-function-in-sql-server.html Slides http://csharp-video-tutorials.blogspot.com/2015/09/groupingid-function-in-sql-server_27.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists
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