Home
Search results “Oracle grouping functions”
Oracle - SQL - Group Functions
 
03:13
Oracle - SQL - Group Functions Watch more Videos at https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Anadi Sharma, Tutorials Point India Private Limited.
Oracle SQL Functions|Group by clause Part- 1 by Dinesh
 
22:47
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......
GROUP BY with Aggregate functions in SQL statement
 
25:01
Using "GROUP BY" clause with Aggregate functions in SQL statement Check the whole "SQL Server Basics" series here: https://www.youtube.com/playlist?list=PLU9JMEzjCv14f3cWDhubPaddxRvx1reKR Check my SQL blog at: http://sqlwithmanoj.com/ Check my SQL FB Page at: https://www.facebook.com/sqlwithmanoj
Views: 39260 SQL with Manoj
SQL Server video :- Explain aggregate functions,group by clause and having keyword ?
 
09:25
For more such videos visit http://www.questpond.com See our other Step by Step video series below :- Learn Angular tutorial for beginners https://tinyurl.com/ycd9j895 Learn MVC Core step by step :- http://tinyurl.com/y9jt3wkv Learn MSBI Step by Step in 32 hours:- https://goo.gl/TTpFZN Learn Xamarin Mobile Programming Step by Step :- https://goo.gl/WDVFuy Learn Design Pattern Step by Step in 8 hours:- https://goo.gl/eJdn0m Learn C# Step by Step in 100 hours :- https://goo.gl/FNlqn3 Learn Data structures & algorithm in 8 hours :-https://tinyurl.com/ybx29c5s Learn SQL Server Step by Step in 16 hours:- http://tinyurl.com/ja4zmwu Learn Javascript in 2 hours :- http://tinyurl.com/zkljbdl Learn SharePoint Step by Step in 8 hours:- https://goo.gl/XQKHeP Learn TypeScript in 45 Minutes :- https://goo.gl/oRkawI Learn webpack in 50 minutes:- https://goo.gl/ab7VJi Learn Visual Studio code in 10 steps for beginners:- https://tinyurl.com/lwgv8r8 Learn Tableau step by step :- https://tinyurl.com/kh6ojyo Preparing for C# / .NET interviews start here http://www.youtube.com/watch?v=gaDn-sVLj8Q visit for 600+ videos @ http://www.questpond.com In this video we will try to understand aggregate function,group by clause and having keyword. This is also one of the favorite SQL Server interview questions as well. We are also distributing a 100 page Ebook ".NET Interview Question and Answers". If you want this ebook please share this video in your facebook/twitter/linkedin account and email us on [email protected] with the shared link and we will email you the PDF.
Views: 182498 Questpond
GROUP BY, ROLLUP and CUBE in Oracle
 
04:09
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: 16737 ORACLE-BASE.com
Aggregate Functions in SQL
 
05:42
Join Discussion: http://www.techtud.com/video-lecture/aggregate-functions-sql IMPORTANT LINKS: 1) Official Website: http://www.techtud.com/ 2) Virtual GATE: http://virtualgate.in/login/index.php Both of the above mentioned platforms are COMPLETELY FREE, so feel free to Explore, Learn, Practice & Share! Our Social Media Links: Facebook Page: https://www.facebook.com/techtuduniversity Facebook Group: https://www.facebook.com/groups/virtualgate Google+ Page: https://plus.google.com/+techtud/posts Last but not the least, SUBSCRIBE our YouTube channel to stay updated about the regularly uploaded new videos.
Views: 15740 Techtud
SQL GROUP BY Clause | Oracle SQL Tutorial Videos | Mr.Vijay Kumar
 
16:15
SQL GROUP BY Clause Oracle Tutorial
Views: 13643 Naresh i Technologies
Grouping function in SQL Server
 
12:49
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: 37512 kudvenkat
12 of 15 SQL Basics with Oracle - Aggregate (grouping) functions and the GROUP BY clause
 
09:33
This video explains the GROUP BY clause and some of the aggregate functions: sum, count, average, maximum, minimum, count(distinct ...), etc. An example of using an aggregate function would be to group students by major and only show the number of students in each major, not individual student information. (12 of 15) There is also an "Advanced SQL" series. (Search for "databasemec" for tutorials using SQL Server.)
Views: 5498 Jennifer Kreie
SQL with Oracle 10g XE - Using the COUNT and SUM Functions
 
04:09
In this video I use the COUNT and SUM functions available to the SQL language. I used the COUNT function to add up the number of records in my query. This function works well with all data types and will just count the number or records that result from the conditions of your query. The SUM function will add up the numeric values and produce a total amount of a column. When using a function be sure to use parenthesis around the column you are performing the function on. This video is part of a series of videos with the purpose of learning the SQL language. For more information visit Lecture Snippets at http://lecturesnippets.com.
Views: 7758 Lecture Snippets
SQL Tutorial - 26: The GROUP BY Clause
 
08:18
In this tutorial we'll check out the GROUP BY Clause. The GROUP BY Clause is used to get together identical data obtained in result sets. We will also briefly talk about two aggregate functions in SQL.
Views: 76820 The Bad Tutorials
Oracle SQL functions and Group Bys
 
05:37
Oracle SQL functions and Group Bys
Views: 692 Chris Ostrowski
SQL with Oracle 10g XE - Using GROUP BY to Group Results of a Query
 
04:52
In this video I use the GROUP BY clause to organize the results of a function by groups or categories. If you are looking to run a function on a column and have those results grouped together then you will need to use the GROUP BY clause to run the query. This video is part of a series of videos with the purpose of learning the SQL language. For more information visit Lecture Snippets at http://lecturesnippets.com.
Views: 5643 Lecture Snippets
Understanding the use of GROUP BY clause in SQL
 
04:39
Join discussion: http://www.techtud.com/video-lecture/understanding-group-clause-sql IMPORTANT LINKS: 1) Official Website: http://www.techtud.com/ 2) Virtual GATE: http://virtualgate.in/login/index.php Both of the above mentioned platforms are COMPLETELY FREE, so feel free to Explore, Learn, Practice & Share! Our Social Media Links: Facebook Page: https://www.facebook.com/techtuduniversity Facebook Group: https://www.facebook.com/groups/virtualgate Google+ Page: https://plus.google.com/+techtud/posts Last but not the least, SUBSCRIBE our YouTube channel to stay updated about the regularly uploaded new videos.
Views: 66906 Techtud
GROUPING vs GROUPING_ID Functions in Oracle
 
15:28
GROUPING_ID Function in Oracle GROUPING Function in Oracle
Views: 13 Adam Tech
123 Oracle 11g Tutorials   Grouping Functions (By MrMerchant Co.)
 
04:03
Oracle 11g Complete Tutorials - PART123 Don't forget to subscribe to my channel. (source: Coding Arena). BOOKS FOR REFERENCE. OCA Oracle Database SQL Certified Expert Exam Guide (Exam 1Z0-047) https://amzn.to/2xy71is Learning SQL: Master SQL Fundamentals - https://amzn.to/2QI0DO7 SQL Pocket Guide: A Guide to SQL Usage - https://amzn.to/2NnI1F7 SQL Cookbook: Query Solutions and Techniques for Database Developers - https://amzn.to/2QCzJY2 Oracle Database 12C: The Complete Reference - https://amzn.to/2QHpWjq OCP: Oracle Database 12c Administrator Certified Professional - https://amzn.to/2NqChKU
Views: 1 MrMerchant Co.
SQL: Group By,  Having, Min, Max Sum
 
14:43
Learn to summarize yoru data using the SQL Aggregates such as count and sum and the GROUP BY and HAVING clauses of the SELECT statement
Views: 148648 Michael Fudge
Oracle  Aggregate functions
 
55:34
Aggregate Funtion: MACSMVS max,avg,count,sum,min, variance, stddev
Views: 962 Jide James
SQL Tutorial - MultiRow Group Function Part-1st
 
14:02
Explained a multirow function -Oracle database Unbeatable,Unbreakable Platform.. #SQLTutorial #MultiRowGroupFunction
Views: 2382 Oracle World
Group Function 02 Oracle
 
01:04:18
Having Clause, Group Function, Group By Clause
SQL Aggregation queries using Group By, Sum, Count and Having
 
10:01
From SQL Queries Joes 2 Pros (Vol2) ch4.1. Learn up to write aggregated queries.
Views: 168859 Joes2Pros SQL Trainings
Oracle - SQL - Advanced Grouping
 
07:03
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.
HAVING BY, GROUP BY, MIN, MAX, AVG FUNCTIONS in Oracle SQL
 
03:22
Oracle SQL Tutorials, How to select statements with having by, group by, min, max, avg functions in Oracle SQL
HAVING clause and difference with GROUP BY & WHERE clause in SQL statement
 
10:17
Using HAVING clause and difference with GROUP BY & WHERE clause in SQL statement Link for scripts on my blog: https://sqlwithmanoj.com/2015/05/23/sql-basics-difference-between-where-group-by-and-having-clause/ Check the whole "SQL Server Basics" series here: https://www.youtube.com/playlist?list=PLU9JMEzjCv14f3cWDhubPaddxRvx1reKR Check my SQL blog at: http://sqlwithmanoj.com/ Check my SQL FB Page at: https://www.facebook.com/sqlwithmanoj
Views: 62806 SQL with Manoj
SQL, oracle , Aggregate functions,4e66
 
07:58
The video will describe what are aggregate functions
Views: 1629 hammadshams
Oracle XML Bursting Report - XDO Functions
 
56:33
Oracle XML Bursting Report - XDO Functions
Views: 20127 Lead Technologies
SQL Tutorial for Beginners Group By, Having , CUBE and ROLLUP
 
12:33
Oracle SQL Group By, Having , CUBE and ROLLUP Grouping Functions SQL Tutorial SQL Tutorial for beginners Oracle SQL Tutorial for beginners
Views: 5904 TechLake
GROUPING ID function in SQL Server
 
12:38
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
Views: 31069 kudvenkat
SQL Aggregate Functions - SUM, AVG(n), COUNT, MIN, MAX Functions in Hindi and English
 
08:25
SQL Tutorial for Beginners in Hindi and English SQL Aggregate Functions - SUM, AVG(n), COUNT, MIN, MAX Functions in Hindi and English
Oracle ch 11 part 1 Group Function
 
09:38
Group Functions in Oracle Express
Views: 79 freshair tn
ORACLE SQL 19: Group multiple functions
 
05:45
http://studyandshare.wordpress.com/ http://www.facebook.com/groups/studyandsharevn/
Views: 559 studyandsharevn
Oracle 11g: Group Functions Oracle | Multisoft Virtual Academy
 
13:28
This sample video familiarizes you with group functions used in Oracle®. Functions covered include AVG, COUNT, MAX, MIN, SUM, STDDEV, and VARIANCE. This video is a teaser from an actual training, where you learn concepts more elaborately. Moreover, the training is conducted by an experienced trainer and comprises varied topics helping you to prepare for the related exam easily. To learn more about Oracle® 11g, visit: http://www.multisoftvirtualacademy.com/
Oracle Group by - Having تعليم أوراكل
 
07:13
by Mohamed El Desouki - محمد الدسوقى [email protected] Tel :00966 553450836 جامعة سلمان بن عبد العزيز - السعودية - الخرج How to apply conditions on groups using Having. كيف تطبق شروط على الجروب Text Book: Fundamentals of Database Systems, 5th Edition, by Elmasri/Navathe, published by Addison-W oracle create table statement oracle drop table statement oracle constraints database constraints primary key constraint foreign key constraint check constraint null not null constraint unique constraint insert into statement update statement delete statement select statement basic query where clause select where Like '%' Like '_' select where Like aggregate functions summary functions group by group by with aggregate functions group by having having
Oracle Group by clause تعليم أوراكل
 
11:03
by Mohamed El Desouki - محمد الدسوقى [email protected] Tel :00966 553450836 جامعة سلمان بن عبد العزيز - السعودية - الخرج How to Group data using group by clause. كيف تجمع البيانات الناتجة عن الإستفسار ـ Text Book: Fundamentals of Database Systems, 5th Edition, by Elmasri/Navathe, published by Addison-W oracle create table statement oracle drop table statement oracle constraints database constraints primary key constraint foreign key constraint check constraint null not null constraint unique constraint insert into statement update statement delete statement select statement basic query where clause select where Like '%' Like '_' select where Like aggregate functions summary functions group by group by with aggregate functions
ORACLE SQL 18: Nested group functions
 
06:07
http://studyandshare.wordpress.com/ http://www.facebook.com/groups/studyandsharevn/
Views: 797 studyandsharevn
Over clause in SQL Server
 
09:13
over partition by in sql server 2008 sql server over clause partition partition by clause in sql server 2008 over partition by clause in sql In this video we will discuss the power and use of Over clause in SQL Server. The OVER clause combined with PARTITION BY is used to break up data into partitions. Syntax : function (...) OVER (PARTITION BY col1, Col2, ...) The specified function operates for each partition. For example : COUNT(Gender) OVER (PARTITION BY Gender) will partition the data by GENDER i.e there will 2 partitions (Male and Female) and then the COUNT() function is applied over each partition. Any of the following functions can be used. Please note this is not the complete list. COUNT(), AVG(), SUM(), MIN(), MAX(), ROW_NUMBER(), RANK(), DENSE_RANK() etc. Example : SQl Script to create Employees table Create Table Employees ( Id int primary key, Name nvarchar(50), Gender nvarchar(10), Salary int ) Go Insert Into Employees Values (1, 'Mark', 'Male', 5000) Insert Into Employees Values (2, 'John', 'Male', 4500) Insert Into Employees Values (3, 'Pam', 'Female', 5500) Insert Into Employees Values (4, 'Sara', 'Female', 4000) Insert Into Employees Values (5, 'Todd', 'Male', 3500) Insert Into Employees Values (6, 'Mary', 'Female', 5000) Insert Into Employees Values (7, 'Ben', 'Male', 6500) Insert Into Employees Values (8, 'Jodi', 'Female', 7000) Insert Into Employees Values (9, 'Tom', 'Male', 5500) Insert Into Employees Values (10, 'Ron', 'Male', 5000) Go Write a query to retrieve total count of employees by Gender. Also in the result we want Average, Minimum and Maximum salary by Gender. This can be very easily achieved using a simple GROUP BY query as show below. SELECT Gender, COUNT(*) AS GenderTotal, AVG(Salary) AS AvgSal, MIN(Salary) AS MinSal, MAX(Salary) AS MaxSal FROM Employees GROUP BY Gender What if we want non-aggregated values (like employee Name and Salary) in result set along with aggregated values You cannot include non-aggregated columns in the GROUP BY query. SELECT Name, Salary, Gender, COUNT(*) AS GenderTotal, AVG(Salary) AS AvgSal, MIN(Salary) AS MinSal, MAX(Salary) AS MaxSal FROM Employees GROUP BY Gender The above query will result in the following error : Column 'Employees.Name' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause One way to achieve this is by including the aggregations in a subquery and then JOINING it with the main query as shown in the example below. Look at the amount of T-SQL code we have to write. SELECT Name, Salary, Employees.Gender, Genders.GenderTotals, Genders.AvgSal, Genders.MinSal, Genders.MaxSal FROM Employees INNER JOIN (SELECT Gender, COUNT(*) AS GenderTotals, AVG(Salary) AS AvgSal, MIN(Salary) AS MinSal, MAX(Salary) AS MaxSal FROM Employees GROUP BY Gender) AS Genders ON Genders.Gender = Employees.Gender Better way of doing this is by using the OVER clause combined with PARTITION BY SELECT Name, Salary, Gender, COUNT(Gender) OVER(PARTITION BY Gender) AS GenderTotals, AVG(Salary) OVER(PARTITION BY Gender) AS AvgSal, MIN(Salary) OVER(PARTITION BY Gender) AS MinSal, MAX(Salary) OVER(PARTITION BY Gender) AS MaxSal FROM Employees Text version of the video http://csharp-video-tutorials.blogspot.com/2015/09/over-clause-in-sql-server.html Slides http://csharp-video-tutorials.blogspot.com/2015/09/over-clause-in-sql-server_29.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: 84694 kudvenkat
MULTI ROW FUNCTION | GROUP FUNCTION in oracle sql
 
05:56
learn about the multirowfunction in oracle sql
Views: 28 Null Sql
Oracle DENSE_RANK Function
 
04:09
https://www.databasestar.com/oracle-dense_rank/ The Oracle DENSE_RANK function allows you to calculate a rank of a row in a group of rows. It returns this rank as a NUMBER value. This function can be used as either an analytic or an aggregate function, and the syntax depends on how you use it. As an aggregate function it looks like this: DENSE_RANK ( expr, [expr(n)] ) WITHIN GROUP ( ORDER BY (order_expr [ASC|DESC] [NULLS FIRST|LAST] ) These parameters are: - expr: this is the value to search for in a particular table. You can specify multiple search values, and just separate them by a comma. - order_expr: this is used to order the expr values by, because you get a different results depending on what order you rank the values in. - NULLS FIRST or LAST: this is where you can specify if you want to have NULL values appear at the top of your ranking order or at the bottom. As an analytic function, it looks like this: DENSE_RANK() OVER ( [query_partition_clause] order_by_clause) The parameters are: - query_partition_clause: this is the expression that the ranking is “grouped” by, as analytic functions allow you to group data within rows. - order_by_clause: this is the expression to order your results by to determine a rank. For this function, if two records have the same sort or rank position, they will have the same RANK value. It won’t cause a gap in the rankings, unlike the RANK function which does cause a gap. For more information about the Oracle DENSE_RANK function, including all of the SQL shown in this video and the examples, read the related article here: https://www.databasestar.com/oracle-dense_rank/
Views: 310 Database Star
Grouping Sets in SQL Server
 
09:36
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: 47735 kudvenkat
SQL: Group By & Having Clause
 
05:59
In this tutorial, you'll learn how to use group by and having clause...
Views: 29507 radhikaravikumar
12-ORACLE SQL 10g (Group Functions Part 1) By Eng-Helal Ahmed
 
19:21
12-ORACLE SQL 10g (Group Functions Part 1) By Eng-Helal Ahmed www.facebook.com/free4arab http://www.free4arab.com http://twitter.com/free4arab1 https://plus.google.com/114278484973373035289/posts نور الهدى لتكنولوجيا المعلومات
How to use the Oracle SQL PIVOT Clause
 
11:46
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: 10334 SkillBuilders
Group by in sql server - Part 11
 
17:44
In this video we will learn 1. Grouping rows using GROUP BY 2. Filtering Groups 3. Difference between WHERE and HAVING clause in sql server Text version of the video http://csharp-video-tutorials.blogspot.com/2012/08/group-by-part-11.html Slides http://csharp-video-tutorials.blogspot.com/2013/08/part-11-group-by.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: 424459 kudvenkat
SQL Group Function
 
18:07
SQL Group Function 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: 5910 Oresoft LWC
14-Oracle SQL 10g (Group Functions Part 1 )By Eng-Helal Ahmed
 
18:08
14-Oracle SQL 10g (Group Functions Part 1 )By Eng-Helal Ahmed https://www.facebook.com/free4arab http://www.free4arab.com https://twitter.com/free4arab1 https://plus.google.com/114278484973373035289 نور الهدى لتكنولوجيا المعلومات

Amaryl 4 mg tabletas next tabs
Skelaxin 800 mg and pregnancy
Hoodia gordonii p57 diet plus pills
Justicialista gran sport 1954 calendar
Tablet medrol 8mg