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DISTINCT Clause & UNIQUE Keyword in Oracle | Oracle Tutorials for Beginners
 
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DISTINCT & UNIQUE Keyword in Oracle | Oracle Tutorials for Beginners DISTINCT Keyword in Oracle DISTINCT Clause in Oracle UNIQUE Keyword in Oracle UNIQUE Clause in Oracle Oracle Tutorials for Beginners Oracle Tutorials for Beginners select distinct * sql distinct multiple columns sql distinct count select distinct on one column with multiple columns returned select distinct mysql sql count distinct multiple columns oracle distinct count sql distinct group by sql count distinct two columns select distinct on one column with multiple columns returned select distinct on one column with multiple columns returned oracle sql select unique values from multiple columns select distinct multiple columns mysql select distinct all columns sql count distinct multiple columns group by sql select distinct multiple columns group by select distinct oracle select distinct rows sql select distinct multiple columns select distinct on one column select count distinct select unique mysql how to select unique records in oracle without using distinct sql select distinct values and count of each Oracle Tutorials for Beginners Oracle Tutorials for Beginners Oracle Tutorials for Beginners Oracle Tutorials for Beginners
Views: 320 Oracle PL/SQL World
Let's Learn SQL! Lesson 16 : Distinct Command vs Group By
 
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Explore SQL with Tom Coffing of Coffing Data Warehousing! In this lesson, learn the differences between the Distinct Command and Group By in SQL!
SQL Aggregation queries using Group By, Sum, Count and Having
 
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From SQL Queries Joes 2 Pros (Vol2) ch4.1. Learn up to write aggregated queries.
Views: 157857 Joes2Pros SQL Trainings
SQL Distinct and Multiple Columns
 
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Jamie King of Neumont University showing how SQL DISTINCT varies when multiple columns are present in the result set.
Views: 16811 Jamie King
Oracle COUNT Function
 
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https://www.databasestar.com/oracle-count/ The Oracle COUNT function is used to count the number of rows from the column, or number of values, provided to it. It’s commonly used to find the number of rows returned by a SELECT query. The syntax of the COUNT function is: COUNT ( [ * | [ DISTINCT | ALL ] expression) [ over (analytic_clause) ] There’s a lot of square brackets here, indicating optional parameters and choices. This just means you can use the COUNT function in a few different ways: COUNT(*) COUNT(DISTINCT expression) COUNT(ALL expression) COUNT(*) OVER (analytic_clause) COUNT(DISTINCT expression) OVER (analytic_clause) COUNT(ALL expression) OVER (analytic_clause) It can be used as an aggregate or analytic function. The parameters of the COUNT function are: - expression: The expression to count the values of. This can be a column or a set of values, for example. - analytic_clause: This is used to specify the criteria for an analytic query. COUNT(*) is the most common way to use this function, I’ve found. As COUNT(*) is an aggregate function, like all aggregate functions the columns mentioned in the SELECT clause need to exist in the GROUP BY clause. NULL values are ignored by COUNT(expression), but they are counted when using COUNT(*). COUNT(*) has the exact same calculation and performance as COUNT(1). For more information about the Oracle COUNT function, including all of the SQL shown in this video and the examples, read the related article here: https://www.databasestar.com/oracle-count/
Views: 63 Database Star
COUNT DISTINCT
 
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How to count DISTINCT records and also talk about how MAX function can be used on all datatypes
Views: 7577 Lew Cousineau
Oracle Database11g tutorials 8 || SQL DISTINCT with multiple columns |SQL Distinct with Two columns
 
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This SQL tutorial and Oracle database 11g tutorial for beginners will show how to use SQL DISTINCT keyword with SQL Select clause. This Video is in the continuation of previous video on SQL distinct with one column. In this video we will see How to use SQL distinct with multiple columns and SQL distinct with two columns Tool used in this tutorial is SQL developer. This tutorial series is part of SQL expert exam certification training. If you are preparing for SQL certification you can use my tutorials. This SQL Tutorial is a part of free training. Copy Cloud referral link || Use this link to join copy cloud and get 20GB of free storage https://copy.com?r=j7eYO7 Contacts Email [email protected] Twitter https://twitter.com/rebellionrider Instagram http://instagram.com/rebellionrider Facebook. https://www.facebook.com/imthebhardwaj Linkedin. in.linkedin.com/in/mannbhardwaj/ Thanks for linking, commenting, sharing and watching more of our videos This is Manish From The Code makers
Views: 95374 Manish Sharma
The GROUP BY clause of the SQL SELECT statement (for ORACLE, MySQL, SQL Server, etc.)
 
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The Structured Query Language (SQL) is the most powerful database language in use today. SELECT is the most powerful statement within SQL, and the GROUP BY clause is part of the reason. Learn the inner workings of GROUP BY and make yourself a more powerful database professional! From Steve O'Hearn of databasetraining.com and Corbinian, author of Oracle Press books, including the first "expert" level certification exam guide from Oracle Corporation, the "OCA Oracle Database SQL Expert Exam Guide: Exam 1Z0-047". (http://www.amazon.com/Oracle-Database-Expert-Exam-Guide/dp/0071614214/ref=sr_1_1?ie=UTF8&qid=1371769056&sr=8-1&keywords=oracle+sql+expert) This information is good for use with Oracle, MySQL, Microsoft SQL Server, and any ANSI-standard SQL database. Full transcript available here: http://databasetraining.com/node/3
Views: 15605 DatabaseTraining
GROUP BY with Multiple Columns (Introduction to Oracle SQL)
 
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Learn how to group with multiple columns using GROUP BY in SQL. The full Introduction to Oracle SQL course is available here: https://www.databasestar.com/introduction-to-oracle-sql-course/
Views: 268 Database Star
Understanding the use of GROUP BY clause in SQL
 
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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: 55224 Techtud
Counting Data Within Groups with GROUP BY (Introduction to Oracle SQL)
 
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How to use grouping and count to count occurrences of data
Views: 145 Database Star
Sql Training Online - Sql Count Function
 
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Learn about the Count function in the SQL Language. Visit http://www.SqlTrainingOnline.com for 30 more FREE videos. The Microsoft SQL Server 2012 SQL Count Function is used to give you a total number of records in your resultset or within a group of data. You would group the data using a group by clause in the SQL Statement. You can visit me at any of the following: SQL Training Online: http://www.sqltrainingonline.com Twitter: http://www.twitter.com/sql_by_joey Google+: https://plus.google.com/#100925239624117719658/posts LinkedIn: http://www.linkedin.com/in/joeyblue Facebook: http://www.facebook.com/sqltrainingonline
Views: 19690 Joey Blue
Find duplicate records by using Group by and Having clause in SQL Server - TSQL Tutorial Part 132
 
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How to find duplicate records by using Group by and Having clause in SQL Server Scenario: You are working as SQL Server developer. You need to write the query for dbo.Customer table that should return the duplicate records and count of duplicate record. Solution: You can use Group by and Count aggregate function to find all the duplicate records in table and count. Let's say that we have dbo.Customer table with below definition and data. We would like to find the record if it is duplicate by columns FName,LName and CountryShortName. Link to scripts used in SQL Server / TSQL Tutorial Video http://www.techbrothersit.com/2017/03/how-to-find-duplicate-records-by-using.html Check out our website for Different SQL Server, MSBI tutorials and interview questions such as SQL Server Reporting Services(SSRS) Tutorial SQL Server Integration Services(SSIS) Tutorial SQL Server DBA Tutorial SQL Server 2016 DBA Tutorial SQL Server / TSQL Tutorial ( Beginner to Advance) http://www.techbrothersit.com/
Views: 2634 TechBrothersIT
12 of 15 SQL Basics with Oracle - Aggregate (grouping) functions and the GROUP BY clause
 
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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: 5383 Jennifer Kreie
SQL DISTINCT Within a SELECT - Retrieving Unique Values
 
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Jamie King of Neumont University demonstrating use of DISTINCT within a SQL SELECT command.
Views: 20332 Jamie King
SQL Tutorial - 30: Using GROUP BY Clause with SQL JOINS
 
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In this tutorial we'll see how we can use the Group By clause with Joins in SQL.
Views: 46261 The Bad Tutorials
ORACLE SQL 6: Distinct & Count
 
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http://studyandshare.wordpress.com/ http://www.facebook.com/groups/studyandsharevn/
Views: 916 studyandsharevn
SQL, sum function,  group by clause
 
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continuation of sum function of SQL and use subquery
Views: 7372 hammadshams
86. COUNT Function in SQL (Hindi)
 
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Please Subscribe Channel Like, Share and Comment Visit : www.geekyshows.com
Views: 8016 Geeky Shows
Grouping Functions in SQL Query Like AVG,SUM,MAX,MIN
 
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SQL COUNT (): This function returns the number of rows in the table that satisfies the condition specified in the WHERE condition. If the WHERE condition is not specified, then the query returns the total number of rows in the table. For Example: If you want the number of emps in a particular department, the query would be: SELECT COUNT (*) FROM emp WHERE deptno = 10; If you want the total number of emps in all the department, the query would take the form: SELECT COUNT (*) FROM emp; SQL DISTINCT(): This function is used to select the distinct rows. For Example: If you want to select all distinct department names from emp table, the query would be: SELECT DISTINCT deptno FROM emp; To get the count of emps with unique name, the query would be: SELECT COUNT (DISTINCT name) FROM emp; SQL MAX(): This function is used to get the maximum value from a column. To get the maximum salary drawn by an emp, the query would be: SELECT MAX (salary) FROM emp; SQL MIN(): This function is used to get the minimum value from a column. To get the minimum salary drawn by an emp, he query would be: SELECT MIN (salary) FROM emp; SQL AVG(): This function is used to get the average value of a numeric column. To get the average salary, the query would be SELECT AVG (salary) FROM emp; SQL SUM(): This function is used to get the sum of a numeric column To get the total salary given out to the emps, SELECT SUM (salary) FROM emp;
Views: 11232 WingsOfTechnology
Oracle Clauses(distinct,having,group by,order by,from) and avg(),sum(),count
 
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Oracle Clauses(distinct,having,group by,order by,from) and avg(),sum(),count
Views: 31 Manohar Sambaa
SQL with Oracle 10g XE - Using the COUNT and SUM Functions
 
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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: 7499 Lecture Snippets
12a of 15 SQL Basics with Oracle - Variations for the COUNT() function
 
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This video looks at three variations of the COUNT() function: COUNT(*), COUNT(field_name) and COUNT(DISTINCT field_name). The examples in the video show what the differences are in the result set for each COUNT variation. (12a of 15)
Views: 1489 Jennifer Kreie
APPROX_COUNT_DISTINCT Function in Oracle Database 11g and 12c
 
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This video demonstrates how to quickly improve the performance of calculating the number of distinct values using the APPROX_COUNT_DISTINCT function. For more information see: https://oracle-base.com/articles/12c/approx-count-distinct-12cr1 Website: https://oracle-base.com Blog: https://oracle-base.com/blog Twitter: https://twitter.com/oraclebase Cameo by Kris Rice Blog: http://krisrice.blogspot.com/ Twitter: https://twitter.com/krisrice Cameo appearances are for fun, not an endorsement of the content of this video.
Views: 630 ORACLE-BASE.com
Performance difference between Count(*) and Count(1)
 
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Its being very confusing topic for me,I have decided to create video and share my knowledge with you guys.Please gives your feedback and suggestion.Thanks.
Views: 1008 SqlIsEasy
Select Distinct Statement  | Part 5 | SQL tutorial for beginners | Tech Talk Tricks
 
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Welcome to tech talk tricks and in this video, we will learn about the select distinct query.So stay tuned and watch the use of the distinct statement in SQL. #TechTalkTricks #RanaSingh In the current video, we will learn about how we can uniquely display or fetch data with the help of distinct SQL statement. The SELECT DISTINCT statement is used to return only distinct (different) values. Inside a table, a column often contains many duplicate values; and sometimes you only want to list the different (distinct) values. SELECT DISTINCT Syntax:SELECT DISTINCT column1, column2, ... FROM table_name; At tech talk trick channel you will learn all kind of technology like language,tutorials and amazing computer tips and tricks. sql distinct multiple columns sql distinct count select distinct on one column select distinct mysql sql distinct vs unique select distinct oracle select distinct on one column with multiple columns returned sql count distinct values ************************************************** Follow Tech Talk Trick on Facebook https://www.facebook.com/techtalktricks ************************************************** Follow tech talk trick on Twitter https://twitter.com/tecktalktrick ************************************************** Follow Tech Talk Tricks on Instagram https://www.instagram.com/techtalktricks ************************************************** Subscribe tech talk tricks on YouTube https://www.youtube.com/techtalktricks *************************************************** 1.How to make your computer start up & shutdown faster https://www.youtube.com/watch?v=3kSjizTn7MM 2.How To Trace Name/Address/Location Of UnKnown Number Easily https://www.youtube.com/watch?v=kyYfOP66l1Y 3.How to make webpage print friendly https://www.youtube.com/watch?v=YPR7JHA0Apk 4.How to Lock Folder Without any software https://www.youtube.com/watch?v=BhEduEM9pws 5.How to enable undo in Gmail https://www.youtube.com/watch?v=g1fOwTQ3zJg 6.How To Recover All Deleted, Formatted, Damaged Files https://www.youtube.com/watch?v=fl3DX6RBoqo 7.How to make Bootable USB Pendrive for Windows https://www.youtube.com/watch?v=IXJE859pxWg 8.How to Unlock Android Pattern or Pin Lock without losing data https://www.youtube.com/watch?v=yN4JnAo7SvU 9.how to track a cell phone location for free https://www.youtube.com/watch?v=0kCLyPJ8cM0 10.How to fix or repair pen drive using cmd https://www.youtube.com/watch?v=ny4VhM2TsWM 11.how to get wifi password of neighbor https://www.youtube.com/watch?v=LCFn6IjvnMM 12.How to Send an Email In Future https://www.youtube.com/watch?v=oo84GRHe5Vg 13.How To Setup Wifi Hotspot Without Any Software in Windows 10 https://www.youtube.com/watch?v=6Bzyvs44G50 14.how to download YouTube video without any software https://www.youtube.com/watch?v=RDfDGY3Be9Y 15.HOW TO SET SHUTDOWN TIMER IN WINDOWS OS (HINDI) https://www.youtube.com/watch?v=Vb5Ou7sc4uk 16.How To convert Word File (Any File Format) to PDF file (Any File Format) https://www.youtube.com/watch?v=Nd0YtV9MwqQ 17.How To Hide Drive of Computer Using Command Prompt (Hindi) https://www.youtube.com/watch?v=AddrPKRGdSk
Views: 738 Tech Talk Tricks
10 Ways to get distinct values without using DISTINCT keyword
 
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Watch video in HD mode for better clarity. Click on Settings -- Quality and Choose 1080p for HD mode. In this video you will learn "10 new ways to get distinct values without using DISTINCT keyword". Subscribe to my channel and do like this video so that you don't miss my latest updates. To get all these new ways at one place visit out website www.learnwitharun.com Web : www.learnwitharun.com
Views: 228 Arun
Advanced Microsoft Access 2013 Tutorial | Selecting Unique And Distinct Values
 
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Want all of our free Microsoft Access training videos? Visit our Learning Library, which features all of our training courses and tutorials at http://learn.infiniteskills.com?utm_source=youtube&utm_medium=microsoft_access&utm_campaign=01870_0301 More details on this Advanced Microsoft Access 2013 training can be seen at http://www.infiniteskills.comadvanced-microsoft-access-2013-training.html/. This clip is one example from the complete course. For more free Microsoft tutorials please visit our main website. YouTube: https://www.youtube.com/user/OreillyMedia Facebook: https://www.facebook.com/OReilly/?fref=ts Twitter: https://twitter.com/OReillyMedia Website: http://www.oreilly.com/
HAVING clause and difference with GROUP BY & WHERE clause in SQL statement
 
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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: 54304 SQL with Manoj
Oracle SQL PLSQL 12C Tutorial 9 - DISTINCT Command, Unique Data
 
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This Video Tutorial Will Describe how to get DISTINCT OR unique values or data from a table in oracle 12C version. This command will also work on other versions of database like Oracle 11g Database, Oracle 10g Database, Oracle 9i Database, Oracle 8i Database, Oracle 8 Database and so on. Whenever you create a new table in oracle, sometimes you just insert the duplicate data or sometimes you need to get only some columns of data which are duplicate but the row is unique. In that case, you need this DISTINCT clause. Full Syntax will be given in this video tutorial about how to get unique records from oracle database table. Along with the live example to get DISTINCT records. All the keywords, format, mandatory clauses etc are described in this video.
SQL Tutorial - 27: The DISTINCT Keyword
 
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In this tutorial we'll see how we can pull out unique data from tables using the DISTINCT Clause in our Queries.
Views: 42287 The Bad Tutorials
SQL Cơ Bản - Bài 5: GROUP BY and GROUP Functions
 
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Trong bài này, chúng ta sẽ học về: - Các Group Function trong Oracle: AVG, SUM, MIN, MAX, COUNT - Phân biệt các kiểu sử dung hàm count(*), count(ten_column), count(distinct ). - Sử dung mệnh đề GROUP BY để gom nhóm dữ lieu. - Sử dung mệnh đề HAVING để lọc lại dữ lieu sau khi đã GROUP BY.
Views: 5648 Database Tutorials
92. GROUP BY in SQL (Hindi)
 
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Please Subscribe Channel Like, Share and Comment Visit : www.geekyshows.com
Views: 19003 Geeky Shows
SQL Tutorial in Oracle - 4 NULL, LIKE, DISTINCT, ORDER BY
 
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SQL SELECT statement is used to fetch the data from a database table which returns data in the form of result table. These result tables are called result-sets. The LIKE operator is used in a WHERE clause to search for a specified pattern in a column. In SQL, wildcard characters are used with the SQL LIKE operator. SQL wildcards are used to search for data within a table. With SQL, the wildcards are: Wildcard Description % A substitute for zero or more characters _ A substitute for a single character [charlist] Sets and ranges of characters to match [^charlist] or [!charlist] Matches only a character NOT specified within the brackets Check out our website: http://www.telusko.com Follow Telusko on Twitter: https://twitter.com/navinreddy20 Follow on Facebook: Telusko : https://www.facebook.com/teluskolearnings Navin Reddy : https://www.facebook.com/navintelusko Follow Navin Reddy on Instagram: https://www.instagram.com/navinreddy20 Subscribe to our other channel: Navin Reddy : https://www.youtube.com/channel/UCxmkk8bMSOF-UBF43z-pdGQ?sub_confirmation=1 Telusko Hindi : https://www.youtube.com/channel/UCitzw4ROeTVGRRLnCPws-cw?sub_confirmation=1
Views: 15957 Telusko
48. Group By Clause in PL/SQL Oracle
 
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In this video you will learn about Group By Clause in PL/SQL Oracle. For Support =========== Email: [email protected] Contact Form: http://www.learninhindi.com/home/contact Our Social Media ================ Facebook: https://www.facebook.com/LearnInHindi Twitter: https://twitter.com/LearnInHindi For Training & Videos ===================== For more videos and articles visit: http://www.learninhindi.com Free Java Programming In Hindi Course ===================================== https://www.youtube.com/playlist?list=PLOZ3jentlCDAwwhMyoLISrxkXTADGp7PH Free Oracle PL/SQL Programming In Hindi Course ============================================== https://www.youtube.com/playlist?list=PLB5DA82419C2D99B6 Free C Programming In Hindi Course ================================== https://www.youtube.com/playlist?list=PLOZ3jentlCDAxKpBLMWogxSdy6BZcsAJq Trips & Tricks Channel ====================== https://www.youtube.com/channel/UCGmLfkuCo-3lHHJXRJ9HUMw Programming in Hindi Channel ============================ https://www.youtube.com/channel/UCudElIDgwNrybeAvXIy1HZQ
Views: 3985 ITORIAN
ORACLE ADVANCED - COUNT AND GROUP BY - INTERNATIONAL SIGN LANGUAGE
 
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2° TUTORIAL ORACLE, WORLD DEAF TECH (WDT)
Views: 103 Gabriele Serpi
how to perform group function in  table(Oracle Apex 12c -Run SQL Commands)
 
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the group functions are sum,avg,max,min,count and distinct syntax sum: select sum(columnname) from tablename Avg : select avg(columnname) from tablename max :select max(columnname) from tablename min :select min(columnname) from tablename count:select count(columnname) from tablename distinct:select distinct(columnname) from tablename
Views: 43 SB TUTORIALS
SQL Server Management Studio Count Records and Count DISTINCT Records
 
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Ever needed to count a lot of records in your project? In this example, we are going to count 2 sets of records. 1 - Count the amount of times a user has made a comment. 1 - Count the amount of post that the user has commented on. This comes in handy, on sites such as, Forums and such. This example will show you not only how to count records, but will also show you how to create a new Query and how to add tables and use the Group By functions within SQL Server Management Studio. Thank You Wayne Barron http://www.cffcs.com http://www.enterview.org/Coding_Source
Views: 4345 Dark Effects Studios
Find Duplicate Rows in SQL - Select Statement Tutorial
 
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Find duplicate row values in a field or multiple fields in SQL Server table with this tutorial. Do this for one column, or multiple columns. Uses SQL Server Management Studio for the demonstration.
Views: 39566 Edward Kench
55. SELECT DISTINCT in SQL (Hindi)
 
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Please Subscribe Channel Like, Share and Comment Visit : www.geekyshows.com
Views: 9663 Geeky Shows
Distinct operator in oracle in hindi ,english
 
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Description. The Oracle DISTINCT clause is used to remove duplicates from the result set. ... Syntax. The syntax for the DISTINCT clause in Oracle/PLSQL is: SELECT DISTINCT expressions FROM tables [WHERE conditions]; ... Note. ... Example - With Single Expression. ... Example - With Multiple Expressions. distinct on multiple columns in sql oracle distinct count oracle select distinct on one column where distinct sql sql distinct group by how to select unique records in oracle without using distinct select distinct count SQL Tutorial in Oracle - 4 NULL, LIKE, DISTINCT, ORDER BY SQL SELECT statement is used to fetch the data from a database table which returns data in the form of result table. These result ... Oracle Database11g tutorials 8 || SQL DISTINCT with multiple columns |SQL Distinct with Two columns will show how to use SQL DISTINCT keyword with SQL Select ... SQL Tutorial - 27: The DISTINCT Keyword The Bad Tutorials In this tutorial we'll see how we can pull out unique data from tables using the DISTINCT Clause in our Queries. 55. SELECT DISTINCT in SQL (Hindi) • Please Subscribe Channel Like, Share and Comment Visit : DISTINCT Clause in Oracle | Oracle SQL Tutorial Videos | • DISTINCT Clause in Oracle. Oracle Database11g tutorials 7 | |SQL DISTINCT keyword || SQL tutorials This SQL tutorial and Oracle database 11g tutorial for beginners will show how to use SQL DISTINCT keyword with SQL Select ... 06- Oracle SQL-Arabic Course Concatenation Operator-Quote q Operator-DISTINCT-DESCRIBEاوراكل ديفلوبر • أهلا بكم فى درس جديد من سلسلة دروس أوراكل ديفلوبر شرح SQL فى درس اليوم نتحدث عن Concatenation Operator & Quote q Operator & ... SQL with Oracle 10g XE - Using the DISTINCT Function Lecture Snippets In this video I use the DISTINCT function to list the values of a column from a query and remove the duplicate listings. When using ... SQL Distinct and Multiple Columns • Jamie King of Neumont University showing how SQL DISTINCT varies when multiple columns are present in the result set. Learn Oracle | Alias Names, Concatenation, Distinct Keyword Pebbles present, Learn Oracle 10g with Step By Step Video Tutorials. Learn Oracle 10g Tutorial series contains the following ... 8:54 Oracle Database tutorials 1: How to install Oracle Database 11g on windows 7 How To install Oracle Database 11g enterprise edition On windows 64 bit. Full installation in Single video. Enjoy SQL and ... Related
Views: 16 Muo sigma classes
SQL 12c  Tutorial 21 : SQL 12c Features APPROX_COUNT_DISTINCT
 
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SQL 12c Tutorial 21 : SQL 12c Features APPROX_COUNT_DISTINCT for COUNT & DISTINCT Combination SQL 12c Tutorial for beginners Oracle SQL 12c Tutorial for beginners APPROX_COUNT_DISTINCT for COUNT and DISTINCT
Views: 412 TechLake
SQL Inner Join Multiple Tables with SUM Tutorial - SQL 2008/2012/2016/2017
 
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Use inner joins with multiple tables to create reports. Uses aliases, and the SUM aggregate function to demonstrate the flexibility of the join statement. Get the SQL script to create the database and run the exercies in the video here: https://www.qewbi.com/sql/scripts/qewbijoins.zip
Views: 126964 Edward Kench
Advanced SQL
 
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Select, Left Join, Count, Sum, Count distinct
Views: 20256 optikalefx
Aggregate Functions in SQL Server || AVG, COUNT, GROUPING functions in SQL
 
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This video will provide you the details of each Aggregate functions in SQL Server 2014. I'll be walking through each and every kinds of build in function which are available in SQL Server in my next videos. ******************************************************************************** Aggregate Functions (Transact-SQL) Aggregate functions perform a calculation on a set of values and return a single value. Except for COUNT, aggregate functions ignore null values. Aggregate functions are frequently used with the GROUP BY clause of the SELECT statement. Aggregate functions can be used as expressions only in the following: • The select list of a SELECT statement (either a subquery or an outer query). • A HAVING clause. ******************************************************************************** AVG (Transact-SQL) Returns the average of the values in a group. Null values are ignored.  Syntax AVG ( [ ALL | DISTINCT ] expression ) OVER ( [ partition_by_clause ] order_by_clause )  Arguments ALL Applies the aggregate function to all values. ALL is the default. DISTINCT Specifies that AVG be performed only on each unique instance of a value, regardless of how many times the value occurs. expression Is an expression of the exact numeric or approximate numeric data type category, except for the bit data type. Aggregate functions and subqueries are not permitted. OVER ( [ partition_by_clause ] order_by_clause) partition_by_clause divides the result set produced by the FROM clause into partitions to which the function is applied. If not specified, the function treats all rows of the query result set as a single group. order_by_clause determines the logical order in which the operation is performed.order_by_clause is required.  Return Types The return type is determined by the type of the evaluated result of expression. Expression result Return type tinyint int smallint int int int bigint bigint decimal category (p, s) decimal(38, s) divided by decimal(10, 0) money and smallmoney category money float and real category float ******************************************************************************** COUNT (Transact-SQL) Returns the number of items in a group. COUNT works like the COUNT_BIG function. The only difference between the two functions is their return values. COUNT always returns an int data type value. COUNT_BIG always returns a bigint data type value.  Syntax -- Syntax for SQL Server and Azure SQL Database COUNT ( { [ [ ALL | DISTINCT ] expression ] | * } ) [ OVER ( [ partition_by_clause ] [ order_by_clause ] [ ROW_or_RANGE_clause ] ) ]  Arguments ALL Applies the aggregate function to all values. ALL is the default. DISTINCT Specifies that COUNT returns the number of unique nonnull values. expression Is an expression of any type except text, image, or ntext. Aggregate functions and subqueries are not permitted. * Specifies that all rows should be counted to return the total number of rows in a table. COUNT(*) takes no parameters and cannot be used with DISTINCT. COUNT(*) does not require an expression parameter because, by definition, it does not use information about any particular column. COUNT(*) returns the number of rows in a specified table without getting rid of duplicates. It counts each row separately. This includes rows that contain null values. OVER ( [ partition_by_clause ] [ order_by_clause ] [ ROW_or_RANGE_clause ] ) partition_by_clause divides the result set produced by the FROM clause into partitions to which the function is applied. If not specified, the function treats all rows of the query result set as a single group. order_by_clause determines the logical order in which the operation is performed.  Return Types int ******************************************************************************** GROUPING (Transact-SQL) Indicates whether a specified column expression in a GROUP BY list is aggregated or not. GROUPING returns 1 for aggregated or 0 for not aggregated in the result set. GROUPING can be used only in the SELECT list, HAVING, and ORDER BY clauses when GROUP BY is specified.  Syntax GROUPING ( column_expression)  Arguments Is a column or an expression that contains a column in a GROUP BY clause.  Return Types tinyint
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Oracle SQL Developer Tutorial For Beginners  15   SELECT COUNT
 
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Oracle SQL Developer Tutorial For Beginners Series. This course introduces Oracle SQL Development for its subscribers. Currently this is based on Oracle 12c. The test environment is in Windows 10.
Views: 2525 Sam Dhanasekaran