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SQL Tutorial : Difference Between Count(1) and Count(*)  in SQL Oracle
 
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SQL Tutorial : Difference Between Count(1) and Count(*) in SQL Oracle SQL Tutorial SQL Tutorial for beginners PLSQL Tutorial PLSQL Tutorial for beginners PL/SQL Tutorial PL SQL Tutorial PL SQL Tutorial for beginners PL/SQL Tutorial for beginners Oracle SQL Tutorial
Views: 2483 TechLake
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: 2698 Sam Dhanasekaran
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: 21106 Joey Blue
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: 7692 Lecture Snippets
SelectTec | Aula Nº 24 | Count - Oracle SQL Developer
 
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Count Syntax: select count(*) from tabela; select count(coluna) from tabela;
Views: 1431 SelectTec
Oracle SQL Video Tutorial 29 - COUNT function
 
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Oracle SQL Video Tutorials 29 - COUNT function explained.In This Oracle SQL Tutorial for Beginners, I have explained basics of SQL.These examples work on Oracle 10g and Oracle 11g database. These helps youto understand Oracle Joins and helps beginners. Iam going to add more tutorials on Oracle DBA, Oracle RAC and Oracle PL/SQL.All Oracle sql tutorial with examples are executed on Oracle 11g using Oracle SQL Developer.
Views: 2915 Just Channel
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: 165254 Joes2Pros SQL Trainings
SQL Tip: Be Wary of SELECT COUNT
 
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In this video, we show why you should be wary of using SELECT COUNT(*). The video was inspired by a blog post by Lukas Eder at http://blog.jooq.org/2014/08/08/sql-tip-of-the-day-be-wary-of-select-count/.
Views: 494 Webucator
SQL tutorial 49: CASE - Simple Case Expression in Oracle Database (1/2)
 
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Case expression let you perform IF-THEN-ELSE in oracle database. There are two type of case in oracle simple case expression and searched case expression. This SQL Tutorial 49 is about Simple Case Expression. ● What Is Case Expression ● Syntax of Simple Case Expression ● Query 1. Column name of a table as Search expression in CASE ● Query 2. String as Search expression in CASE Celebrating 1000 subscribers. Thanks a lot guys for all your love and support. ------------------------------------------------------------------------ ►►►LINKS◄◄◄ Blog: http://bit.ly/simple-case-expression ------------------------------------------------------------------------- Copy Cloud referral link || Use this link to join copy cloud and get 20GB of free storage https://copy.com?r=kb4rc1 -------------------------------------------------------------------------- ►Make sure you SUBSCRIBE and be the first one to see my videos! -------------------------------------------------------------------------- Amazon Wishlist: http://bit.ly/wishlist-amazon ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ►►►Find me on Social Media◄◄◄ Follow What I am up to as it happens on https://twitter.com/rebellionrider https://www.facebook.com/imthebhardwaj http://instagram.com/rebellionrider https://plus.google.com/+Rebellionrider http://in.linkedin.com/in/mannbhardwaj/ http://rebellionrider.tumblr.com/ http://www.pinterest.com/rebellionrider/ You can also Email me at [email protected] Please please LIKE and SHARE my videos it makes me happy. Thanks for liking, commenting, sharing and watching more of our videos This is Manish from RebellionRider.com ♥ I LOVE ALL MY VIEWERS AND SUBSCRIBERS
Views: 36250 Manish Sharma
SQL Select Statement on Oracle 11g Database with Example
 
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SQL tutorial for beginners in hindi and english SQL Select Statement on Oracle 11g Database with Example
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: 11477 WingsOfTechnology
SQL: Group By,  Having, Min, Max Sum
 
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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: 146203 Michael Fudge
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: 21602 Jamie King
Over clause in SQL Server
 
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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: 81787 kudvenkat
SQL Server - Query Table Record Data via TSQL - SELECT COUNT
 
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How to select count(*) of table records. This tutorial covers how to select count(*) of entire table or how to select count(*) of a subset of data via using a where clause filter.
Views: 1052 Dave Merton
Agrupando. Select, Count, Group By con MySql Workbench. Tutorial SQL 11 en español.
 
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En este video tutorial se explica como agrupar con MySql Workbench usando Select, Count, Group By. Para más información sobre este tema ver; http://www.edu4java.com/es/sql/sql11.html Para videos de sql relacionados ver; http://www.edu4java.com/sql.html En ; http://www.edu4java.com enseñamos java, android, sql, juegos, swing, spring,servlet, jsp y mucho más!!! También pueden visitar el canal de youtube; http://www.youtube.com/user/edu4java Y suscribirse ; http://www.youtube.com/channel/UCsxGELCoTMFXD3PX0hzxZAQ?sub_confirmation=1
Views: 46388 edu4java
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: 17997 Jamie King
SelectTec | Aula Nº 5 | Select Table - Oracle SQL Developer
 
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select syntax: select * from tabela;
Views: 5730 SelectTec
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: 97420 Manish Sharma
Using COUNT in Other Ways (Introduction to Oracle SQL)
 
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Other ways to use the COUNT function in SQL. The full Introduction to Oracle SQL course is available here: https://www.databasestar.com/introduction-to-oracle-sql-course/
Views: 124 Database Star
Finding Duplicates using Count in SQL Select (Arabic)
 
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ايجاد عدد التكرار في الاستعلام
Views: 293 Waheed Alsayer
SQL Aggregate functions like SQL MAX, SQL MIN, SQL COUNT And AVERAGE function
 
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http://learningsqlserver2008.com SQL Aggregate Functions are necessary to summarize numerical data in a SqL Server database. We have already looked at other transact SQl statements like SELECT and UPDATE SQL statements. Those typically are used to return rows of data that matches the criteria in the WHERE clause. SQL statements using aggregate functions like MIN, COUNT, AVG, SUM or MAX however return just one value after sql server has already applied the aggregation and summarized the data. In this manner MS 2008 aGgregate fUnctions perform their operation across multiple rows of data. For today's discussion we are going to look at AdventureWorks2008 sample database in SQL Server 2008. There are a number of SQL aggregate functions including SQL min, max, avg, sum, group by, count functionS
Views: 22393 baghul
ORACLE SQL 6: Distinct & Count
 
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http://studyandshare.wordpress.com/ http://www.facebook.com/groups/studyandsharevn/
Views: 920 studyandsharevn
How to use Sum, Avg and Count in Select Statement - SQL Server / TSQL Tutorial Part 128
 
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How to use Sum, Avg and Count in Select Statement Scenario: Let's say that you have dbo.Customer table with SaleAmount column and you are asked to write a query that should return you sum of SaleAmount, Average of SaleAmount and Count of all the records. Solution: You can use Aggregate functions such as Sum, Avg and count in TSQL to find the answer of your question. Let's create dbo.Customer Table with sample data so we can use Sum, Avg and Count aggregate functions. Link to scripts used in SQL Server / TSQL Tutorial Video http://www.techbrothersit.com/2017/03/how-to-use-sum-avg-and-count-in-select.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: 1535 TechBrothersIT
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: 59620 SQL with Manoj
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: 41668 Edward Kench
SQL Aggregates: COUNT(*) aggregate function
 
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Learn about the COUNT(*) SQL aggregate function.
Views: 621 James Marks
Sql query to select all names that start with a given letter without like operator
 
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Text Article http://csharp-video-tutorials.blogspot.com/2017/01/sql-query-to-select-all-names-that.html Slides http://csharp-video-tutorials.blogspot.com/2017/01/sql-query-to-select-all-names-that_31.html SQL Server Interview Questions and Answers text articles & slides http://csharp-video-tutorials.blogspot.com/2014/05/sql-server-interview-questions-and.html SQL Server Interview Questions and Answers playlist https://www.youtube.com/playlist?list=PL6n9fhu94yhXcztdLO7i6mdyaegC8CJwR 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 In this video we will discuss writing a SQL query to retrieve all student names that start with letter 'M' without using the LIKE operator. If the interviewer has not mentioned not to use LIKE operator, we would have written the query using the LIKE operator as shown below. SELECT * FROM Students WHERE Name LIKE 'M%' We can use any one of the following 3 SQL Server functions, to achieve exactly the same thing. CHARINDEX LEFT SUBSTRING The following 3 queries retrieve all student rows whose Name starts with letter 'M'. Notice none of the queries are using the LIKE operator. SELECT * FROM Students WHERE CHARINDEX('M',Name) = 1 SELECT * FROM Students WHERE LEFT(Name, 1) = 'M' SELECT * FROM Students WHERE SUBSTRING(Name, 1, 1) = 'M'
Views: 53845 kudvenkat
Oracle SQL Video Tutorial 1: SELECT Statement
 
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Oracle SQL Video Tutorial: SELECT Statement . In This video we explained how to use select statement. "oracle as" "what is oracle" "sql and pl sql" "pl sql pl sql" "pl sql &" "& pl sql" "pl sql and" "pl sql and sql" "oracle to sql" "to sql oracle" "sql to oracle" "oracle 10g" "oracle 11g" "oracle database" "database oracle" "oracle data" "oracle download" "download oracle" "tutorial on sql" "tutorial for sql" "sql tutorial for" "sql tutorial" "sql and tutorial" "visual basic tutorial" "oracle 9i" "oracle on windows" "linux oracle" "oracle and linux" "oracle linux" "oracle on linux" "pl oracle" "oracle forms" "oracle sql pl" "oracle pl sql" "oracle dba" "tutorial for oracle" "tutorial of oracle" "tutorial on oracle" "tutorial in oracle" "oracle tutorial" "tutorial oracle" "oracle free" "free oracle" "oracle apex" "tutorials for sql" "sql tutorials" "tutorials on sql" "oracle certification" "certification oracle" "oracle software"
Views: 13848 Just Channel
Row Number function in SQL Server
 
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sql server row_number example sql server row number by partition sql server row_number over partition by order by In this video we will discuss Row_Number function in SQL Server. This is continuation to Part 108. Please watch Part 108 from SQL Server tutorial before proceeding. Row_Number function Introduced in SQL Server 2005 Returns the sequential number of a row starting at 1 ORDER BY clause is required PARTITION BY clause is optional When the data is partitioned, row number is reset to 1 when the partition changes Syntax : ROW_NUMBER() OVER (ORDER BY Col1, Col2) Row_Number function without PARTITION BY : In this example, data is not partitioned, so ROW_NUMBER will provide a consecutive numbering for all the rows in the table based on the order of rows imposed by the ORDER BY clause. SELECT Name, Gender, Salary, ROW_NUMBER() OVER (ORDER BY Gender) AS RowNumber FROM Employees Please note : If ORDER BY clause is not specified you will get the following error The function 'ROW_NUMBER' must have an OVER clause with ORDER BY Row_Number function with PARTITION BY : In this example, data is partitioned by Gender, so ROW_NUMBER will provide a consecutive numbering only for the rows with in a parttion. When the partition changes the row number is reset to 1. SELECT Name, Gender, Salary, ROW_NUMBER() OVER (PARTITION BY Gender ORDER BY Gender) AS RowNumber FROM Employees Use case for Row_Number function : Deleting all duplicate rows except one from a sql server table. Discussed in detail in Part 4 of SQL Server Interview Questions and Answers video series. Text version of the video http://csharp-video-tutorials.blogspot.com/2015/09/rownumber-function-in-sql-server.html Slides http://csharp-video-tutorials.blogspot.com/2015/09/rownumber-function-in-sql-server_30.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: 76851 kudvenkat
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: 208 Database Star
05 of 15 SQL Basics with Oracle - SELECT ... FROM ....
 
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This video shows the simplest, most commonly used SQL command: SELECT ... FROM. We use SQL Developer to view data from tables in the students-teams database and in the HR database. We see how to specify a schema name for a table and how to count rows in a table without showing detailed data from the table. (5 of 15) There is also an "Advanced SQL" series. (Search for "databasemec" for tutorials using SQL Server.)
Views: 3500 Jennifer Kreie
SQL Aggregate Functions - SUM, AVG(n), COUNT, MIN, MAX Functions in Hindi and English
 
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SQL Tutorial for Beginners in Hindi and English SQL Aggregate Functions - SUM, AVG(n), COUNT, MIN, MAX Functions in Hindi and English
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: 1502 Jennifer Kreie
Oracle Partition By clause, Oracle Analytic Functions tutorial
 
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More about analytic functions, visit http://www.learn-with-video-tutorials.com Oracle Analytic Functions and Over By Partition clause enable calculating cumulative and moving aggregates returning multiple rows for each group.
PIVOT Tutorial - generating dynamic column with PIVOT Interview Question SQL
 
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In this lecture you will learn about PIVOT operator and using it to generate dynamic columns.PIVOT is very use full operator to convert values into columns. PIVOT: •Convert your output from (values)vertical order to horizontal(making columns) one Topic to cover: •PIVOT example •PIVOT syntax •Interview Question •PIVOT on northwind •Dynamic PIVOT query http://www.techsapphire.in/index/pivot_sql_lesson_with_generating_dynamic_columns_with_pivot/0-158
Views: 27890 techsapphire
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: 62935 Techtud
SQL SELECT INDIVIDUAL FIELDS FROM MULTIPLE TABLES
 
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SQL SELECT INDIVIDUAL FIELDS FROM MULTIPLE TABLES - how to SELECT INDIVIDUAL FIELDS FROM MULTIPLE TABLES visit Dose for excel Add-In website: http://www.zbrainsoft.com/ Visit our channel: https://www.youtube.com/channel/UCI4bMWYzrBTs47KINXL92Kw
Oracle SQL TUTORIAL – IF condition using CASE and DECODE  - An Example
 
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In this video, we shall see how case and decode is used in real time scenario. SQL used in the video is given below. SELECT * FROM emp_test ORDER BY gender; count_of_employees Count_of_Male_Employees Count OF Female Employees -- 15 5 8 select count(*) " Total Employees" from emp_test; select gender,count(*) " Total Employees" from emp_test group by gender; select sum(decode(gender,'M',1,0)) Count_OF_Male_Employees from emp_test; select sum(case gender when 'F' then 1 else 0 end) as Count_OF_FeMale_Employees from emp_test; SELECT count(*) " Total Employees" , sum(decode(gender,'M',1,0)) Count_OF_Male_Employees, sum(case gender when 'F' then 1 else 0 end) Count_OF_Female_Employees from emp_test;
Views: 33 Ganesh Anbarasu
SQL with Oracle 10g XE - Using SELECT and WHERE to Query a Table
 
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In this video I use the SELECT command to query information from my table. Rather than viewing the entire table I can select which columns I want to see as well as in which order I would like them to appear. I use the WHERE command to state a condition on the query that will result in narrowing my search. 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: 6984 Lecture Snippets
SQL, count function, lesson 19
 
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SQL count function
Views: 8616 hammadshams
Select and Where: Databases for Developers #4
 
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You query a database table with a select statement. But unless you provide a where clause, this will return you all the rows! That's a lot for you to sift through if your table has millions, billions or trillions of rows. In this episode Chris discusses common conditions for filtering rows so the database only returns what you need. Further reading: Oracle Database 12.2 select syntax: http://docs.oracle.com/database/122/SQLRF/SELECT.htm#SQLRF01702 Oracle Database Concepts Guide on Select: http://docs.oracle.com/database/122/CNCPT/sql.htm#GUID-702909E1-B214-4D30-A0F9-5A4335C2BA4A Take the Databases for Developers FREE SQL course at https://devgym.oracle.com/devgym/database-for-developers.html Daily SQL tips on Twitter: https://twitter.com/SQLDaily Chris on Twitter: https://twitter.com/ChrisRSaxon All Things SQL Blog: https://blogs.oracle.com/sql ============================ The Magic of SQL with Chris Saxon Copyright © 2015 Oracle and/or its affiliates. Oracle is a registered trademark of Oracle and/or its affiliates. All rights reserved. Other names may be registered trademarks of their respective owners. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the “Materials”). The Materials are provided “as is” without any warranty of any kind, either express or implied, including without limitation warranties or merchantability, fitness for a particular purpose, and non-infringement.
Views: 5610 The Magic of SQL
COUNT() with SELECT Query in SQL | Part - 18.3 | SQL Tutorial for Beginners | Tech Talk Tricks
 
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Welcome to Tech Talk Tricks and in this video, we will learn about how to use count() aggregate function with SELECT Query in SQL. So stay tuned and watch the use of the Aggregate function with SELECT Query. #TechTalkTricks #RanaSingh At Tech Talk Tricks you will learn HTML,CSS,SQL,PL/SQL,JAVA and many more computer as well as mobile tips and tricks. So please SUBSCRIBE to getting updated with the latest technology. SUBSCRIBE our channel at : https://www.youtube.com/techtalktricks ************************************************** 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 *************************************************** Channel tag : techtalktricks, tech talk tricks html, css, java, sql, computer tricks,
Views: 200 Tech Talk Tricks
Part 8   SQL Query to find department with highest number of employees
 
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Link for all dot net and sql server video tutorial playlists http://www.youtube.com/user/kudvenkat/playlists Link for slides, code samples and text version of the video http://csharp-video-tutorials.blogspot.com/2014/06/part-8-sql-query-to-find-department.html Scenario asked in the SQL Server Interview Based on the above two tables write a SQL Query to get the name of the Department that has got the maximum number of Employees. To answer this question it will be helpful if you the knowledge of JOINS & GROUP BY in SQL Server. We discusses these in Parts 11 & 12 of SQL Server Tutorial video series. SQL query that retrieves the department name with maximum number of employees SELECT TOP 1 DepartmentName FROM Employees JOIN Departments ON Employees.DepartmentID = Departments.DepartmentID GROUP BY DepartmentName ORDER BY COUNT(*) DESC Scenario asked in the SQL Server Interview Based on the above two tables write a SQL Query to get the name of the Department that has got the maximum number of Employees. To answer this question it will be helpful if you the knowledge of JOINS & GROUP BY in SQL Server. We discusses these in Parts 11 & 12 of SQL Server Tutorial video series. SQL query that retrieves the department name with maximum number of employees SELECT TOP 1 DepartmentName FROM Employees JOIN Departments ON Employees.DepartmentID = Departments.DepartmentID GROUP BY DepartmentName ORDER BY COUNT(*) DESC
Views: 114717 kudvenkat

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