Home
Search results “Oracle view rowid”
ROWID VS ROWNUM IN ORACLE
 
09:21
This Video explains the difference between ROWID and ROWNUM using real project examples. ROWID provides the unique physical address where the row is being stored. ROWNUM indicates the order in which the data was returned from the select query.
Views: 3254 Tech Coach
HOW TO IDENTIFY AND DELETE DUPLICATE ROWS USING ROWID AND GROUPBY IN ORACLE SQL
 
07:53
This video demonstrates examples on how to find and delete duplicate records from a table. The video gives simple and easy to understand examples on finding duplicate records from a table using group by and having clause and row_number function. It also shows the ways in which duplicates can be deleted very efficiently using the rowid of that record. You can get the code from our website http://oracleplsqlblog.com/FullBlog/FullBlog/21
Views: 10522 Kishan Mashru
SQL: pseudo columns (Rowid/Rownum)
 
05:54
In this tutorial, u'll learn the difference between rowid & rownum..
Views: 31528 radhikaravikumar
ORACLE SQL AND PL/SQL INTERVIEW QUESTION : DIFFERENCE BETWEEN ROWID AND ROWNUM WITH EXAMPLE
 
07:35
In this video tutorial, we discuss the pseudo column rowid and rownum in oracle sql. After watching this video you would be able to understand the basic difference between rowid and a rownum pseudo columns of oracle database. Rowid returns the exact location of the row in the database, hence whenever you retrive a record based on rowid, it is the fastest retrival possible. Whereas for each row returned by a query, the ROWNUM pseudocolumn returns a number indicating the order in which Oracle selects the row from a table or set of joined rows. For more such videos visit out complete list of videos on www.youtube.com/c/kishanmashru Visit or blog www.oracleplsqlblog.com
Views: 1905 Kishan Mashru
Oracle sql Interview Question : How to change rows to column
 
09:18
This video tutorial talks about the frequently asked oracle sql interview question of changing rows to the column. Based on the given scenario, we are asked to change the presentation of data in a table with 3 rows and 2 column to 3 columns and 2 rows. Decode Function in oracle https://youtu.be/YUAjPMjqMws Pivot and unpivot in oracle https://youtu.be/6s0DI1YcWIM
Views: 16800 Kishan Mashru
How to Delete the Duplicate Records in oracle
 
03:44
http://oracletemple.blogspot.in/ How to Delete the duplicate records How delete the duplicate rows ? Tips: - Always take extra caution while deleting records. 1. First identify the duplicates using select. 2. Double verify those are actual ‘duplicates’ or not 3. Take backup if necessary 4. Apply commit only if you are sure. -~-~~-~~~-~~-~- Please watch: "difference between delete and truncate" https://www.youtube.com/watch?v=7b6wQ3Qumgg -~-~~-~~~-~~-~- ------------------------------------------------------------------ Below is link for Useful Pl/SQL Books http://goo.gl/XMy0tt ---------------------------------------------------------- Watch More... What is Parameterized Cursor in Oracle https://www.youtube.com/watch?v=JMKwHlVi6-A What is autonomous transaction in Oracle. https://www.youtube.com/watch?v=gyvFajpfoWE What are Constraints available in Oracle. https://www.youtube.com/watch?v=WivhdLXQklQ What is Mutation Error and How to avoid mutation. https://www.youtube.com/watch?v=CbWNCyW18Bs 5 Effective way to delete Duplicate rows https://www.youtube.com/watch?v=1wtTtnc87Oc What is Difference between Delete and Truncate https://www.youtube.com/watch?v=7b6wQ3Qumgg
Views: 23402 Ram Gupta
What are types of View available in Oracle
 
05:10
What are the types of View available in Oracle? Watch More... What is Parameterized Cursor in Oracle https://www.youtube.com/watch?v=JMKwHlVi6-A What is autonomous transaction in Oracle. https://www.youtube.com/watch?v=gyvFajpfoWE What are Constraints available in Oracle. https://www.youtube.com/watch?v=WivhdLXQklQ What is Mutation Error and How to avoid mutation. https://www.youtube.com/watch?v=CbWNCyW18Bs 5 Effective way to delete Duplicate rows https://www.youtube.com/watch?v=1wtTtnc87Oc What is Difference between Delete and Truncate https://www.youtube.com/watch?v=7b6wQ3Qumgg
Views: 10066 Ram Gupta
Analytical Functions in oracle explained with real examples
 
25:24
This video explains analytical functions and how they are implemented in real projects. Analytical functions are somewhat similar to aggregate functions,but they offer much more. Why use analytical function ? They allow you to write fast and concise queries which otherwise will involve self join and long processing times They allow you to perform aggregate functions independently on sets of partitions. You can access values from previous rows in current row and you can restrict the window on which you want to apply this analytical function. I have given additional practice exercises along with the dataset so that you can comfortably work with analytical functions. You can find the sample problems along with dataset in the below link. http://www.internshipsfromhome.com/oracle-analytical-functions-ddl-and-dml/
Views: 22338 Tech Coach
Materialized Views in Oracle ( Part - 1 Introduction)
 
12:04
This video explain on Materialized View in Oracle, states various advantages of Materialized view, different types of Materialized View, and explains the Syntax on basic Read-Only Materialized View.
Views: 9596 Kishan Mashru
part 15 mlog$ with rowid
 
02:29
data warehousing, rowid, materialized view log
Materialized Views in Oracle  (Part - 2 Practical Implementation with Examples)
 
13:10
This video explains the syntax of creating a materialized view in oracle database, and also a brief demo of creating materialized view, refreshing the MV and dropping the MV is shown in this free video tutorial.
Views: 9437 Kishan Mashru
ROWNUM vs ROWID in Oracle Explain with Examples
 
04:55
Oracle ROWNUM and ROWID
Views: 73 Adam Tech
Row Number function in SQL Server
 
07:24
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: 85131 kudvenkat
What is View and What is Materialized View and Difference Between Them
 
08:27
Very Common Question in Interviews on PLSQL.
Views: 16204 Useful Tips
ORACLE SQL INTERVIEW QUESTION : HOW TO SELECT ODD OR EVEN ROWS FROM A TABLE IN ORACLE
 
03:52
This video tutorial answers the frequently asked interview question, how to select only odd or even records in oracle sql, after watching this video you will understand more on the topic and will be able to answer this interview question with a lot of confidence.
Views: 4493 Kishan Mashru
PL/SQL: Difference between Views & MV
 
03:29
In this tutorial, you'll know what are difference between views & materialized views..
Views: 31869 radhikaravikumar
Difference between view and materialized view
 
06:28
This video is a free tutorial on the difference between views and materialized views. The tutorial demonstrates the difference between oracle pl/sql view and an MV through a detailed explanation of sections such as data storage, refresh option, query tuning option and performance benchmark. By learning the difference the users can make an effective judgment on when to use view and when to use a materialized view. Video on Views: https://youtu.be/9mGQ6XdyAP0 Video on MV: https://youtu.be/7PklhTCNxxw If you want more such videos of exciting and amazing 'difference between' concepts, check out the links below: procedure and function: https://youtu.be/q3LmOenL120 union and union all: https://youtu.be/n9FqQOd8liY char and varchar2: https://youtu.be/039qzwjWf4k replace and translate: https://youtu.be/HKYF77BGzOE in and exists: https://youtu.be/REX4IjRYlFw rank and dense_rank: https://youtu.be/WGSX998hZ9M delete and truncate: https://youtu.be/u76wMm2byXo %type and %rowtype: https://youtu.be/MlLUFeZ_3eM
Views: 6724 Kishan Mashru
How to find nth Max salary in a table
 
12:10
This video is useful to find the nth max salary from a table. It shows all the different ways and possibilities to find the nth max salary from a table, using a rownum sub query and the later on using a dense rank function.
Views: 12634 Kishan Mashru
20. SQL for Beginners - ROWID & ROWNUM (Hindi)
 
15:25
Welcome to JavaScript for Beginner Series. In this video, you'll learn about Redirect and Page Print techniques in Javascript. So, let's get started. JavaScript Playlist: https://www.youtube.com/playlist?list=PLysly0KYnAY2tLfvp7bCL3c-psMH9Czs6 HTML Playlist: https://www.youtube.com/playlist?list=PLysly0KYnAY2_-PqGSrVTgBpVshxpqQlw Mobile Responsive Form using HTML & CSS: https://www.youtube.com/watch?v=SECTfL3R0B0&t=0s&index=1&list=PLysly0KYnAY3TW2A2ey5tdRK_UMRWw2Xu SQL Playlist: https://www.youtube.com/playlist?list=PLysly0KYnAY2q8cobbotVbn36XOskQR2F FACEBOOK PAGE https://www.facebook.com/ishwaracademy/
Views: 279 Ishwar Academy
How to delete duplicate records from a table in oracle
 
02:01
Let c how to remove duplicates from a table..I have one table here 'student' It has two duplicate records. 3 joe 4 robert These two records has duplicates. So I have to remove them. I can remove them using rowid functionality using one subquery. You can give different column names in GROUP BY clause. to identify the duplicate record. You can give just primary key values also. Duplicate rows are deleted now... Query used in video: delete from student where rowid not in (select min(rowid) from student group by sno,sname); Thanks for watching...:)
Views: 15460 WingsOfTechnology
part 13 materialized view log with clause- summary
 
04:29
materialized view log, with clause, primary key, rowid, column name, sequence$$
Oracle Interview Question - oracle difference between view and materialized view
 
10:50
Oracle Interview Question - Difference between view and materialized view? List of all the SQL and PLSQL interview questions @ https://easy-learning-tech.blogspot.com/p/oracle-sql-plsql-interview-questions.html
Views: 830 Siva Academy
4 of 6  SQL Advanced with Oracle  - Inline subquery and rownum
 
04:53
This video gives an example of an inline subquery, a query in the FROM clause of another query. We also see how we might use the rownum option to limit how many rows of output we get. (4 of 6) There is also an "SQL Fundamentals" series. (Search for "databasemec" for tutorials using SQL Server.)
Views: 10689 Jennifer Kreie
Using Rownum to find out Nth record from First, Last and within a range in a table.
 
04:59
Using Rownum to find the first nth record and last nth record and in between record in emp table. This is the most frequesntly questions ever asked in interviews.
Views: 3567 Kiranjit Parida
Part 4   Delete duplicate rows in sql
 
03:26
Link for all dot net and sql server video tutorial playlists http://www.youtube.com/user/kudvenkat/playlists Link for slides, code samples and text version of the video http://csharp-video-tutorials.blogspot.com/2014/05/part-4-delete-duplicate-rows-in-sql.html In this video, we will discuss deleting all duplicate rows except one from a sql server table. SQL Script to create Employees table Create table Employees ( ID int, FirstName nvarchar(50), LastName nvarchar(50), Gender nvarchar(50), Salary int ) GO Insert into Employees values (1, 'Mark', 'Hastings', 'Male', 60000) Insert into Employees values (1, 'Mark', 'Hastings', 'Male', 60000) Insert into Employees values (1, 'Mark', 'Hastings', 'Male', 60000) Insert into Employees values (2, 'Mary', 'Lambeth', 'Female', 30000) Insert into Employees values (2, 'Mary', 'Lambeth', 'Female', 30000) Insert into Employees values (3, 'Ben', 'Hoskins', 'Male', 70000) Insert into Employees values (3, 'Ben', 'Hoskins', 'Male', 70000) Insert into Employees values (3, 'Ben', 'Hoskins', 'Male', 70000) The delete query should delete all duplicate rows except one. Here is the SQL query that does the job. PARTITION BY divides the query result set into partitions. WITH EmployeesCTE AS ( SELECT *, ROW_NUMBER()OVER(PARTITION BY ID ORDER BY ID) AS RowNumber FROM Employees ) DELETE FROM EmployeesCTE WHERE RowNumber ] 1
Views: 348579 kudvenkat
GLOBAL TEMPORARY TABLE (GTT) IN ORACLE SQL WITH EXAMPLES
 
13:33
This video demonstrates the usage and working of GTT in oracle SQL. The video shows how internally oracle works with GTT, and also explains the working of ON COMMIT DELETE ROWS and ON COMMIT PRESERVER ROWS in oracle with easy examples.
Views: 9752 Kishan Mashru
ORACLE SQL AND PL/SQL INTERVIEW QUESTION : SUBQUERY WITH IN / EXISTS OR SELF JOIN
 
09:31
This video demonstrates the solution of the oracle sql interview question like, find the employees where there manager's salary is more than 15000. This is a classic example of using a subquery or a self join to get the result.
Views: 2738 Kishan Mashru
SQL 12c Tutorial 17 :  SQL Inline View Sub-Queries examples
 
07:06
SQL 12c Tutorial 17 : SQL Inline View Sub-Queries examples SQL 12c Tutorial for beginners Oracle SQL 12c Tutorial for beginners SQL In Line Views SQL Sub Queries
Views: 1411 TechLake
SQL: Inline Views
 
06:24
In this Tutorial, you'll learn the advantages of inline view and how to make use of it..
Views: 18576 radhikaravikumar
SQL: Delete Vs Truncate Vs Drop
 
08:27
In this tutorial, you'll learn the difference between delete/drop and truncate. PL/SQL (Procedural Language/Structured Query Language) is Oracle Corporation's procedural extension for SQL and the Oracle relational database. PL/SQL is available in Oracle Database (since version 7), TimesTen in-memory database (since version 11.2.1), and IBM DB2 (since version 9.7).[1] Oracle Corporation usually extends PL/SQL functionality with each successive release of the Oracle Database. PL/SQL includes procedural language elements such as conditions and loops. It allows declaration of constants and variables, procedures and functions, types and variables of those types, and triggers. It can handle exceptions (runtime errors). Arrays are supported involving the use of PL/SQL collections. Implementations from version 8 of Oracle Database onwards have included features associated with object-orientation. One can create PL/SQL units such as procedures, functions, packages, types, and triggers, which are stored in the database for reuse by applications that use any of the Oracle Database programmatic interfaces. PL/SQL works analogously to the embedded procedural languages associated with other relational databases. For example, Sybase ASE and Microsoft SQL Server have Transact-SQL, PostgreSQL has PL/pgSQL (which emulates PL/SQL to an extent), and IBM DB2 includes SQL Procedural Language,[2] which conforms to the ISO SQL’s SQL/PSM standard. The designers of PL/SQL modeled its syntax on that of Ada. Both Ada and PL/SQL have Pascal as a common ancestor, and so PL/SQL also resembles Pascal in several aspects. However, the structure of a PL/SQL package does not resemble the basic Object Pascal program structure as implemented by a Borland Delphi or Free Pascal unit. Programmers can define public and private global data-types, constants and static variables in a PL/SQL package.[3] PL/SQL also allows for the definition of classes and instantiating these as objects in PL/SQL code. This resembles usage in object-oriented programming languages like Object Pascal, C++ and Java. PL/SQL refers to a class as an "Abstract Data Type" (ADT) or "User Defined Type" (UDT), and defines it as an Oracle SQL data-type as opposed to a PL/SQL user-defined type, allowing its use in both the Oracle SQL Engine and the Oracle PL/SQL engine. The constructor and methods of an Abstract Data Type are written in PL/SQL. The resulting Abstract Data Type can operate as an object class in PL/SQL. Such objects can also persist as column values in Oracle database tables. PL/SQL is fundamentally distinct from Transact-SQL, despite superficial similarities. Porting code from one to the other usually involves non-trivial work, not only due to the differences in the feature sets of the two languages,[4] but also due to the very significant differences in the way Oracle and SQL Server deal with concurrency and locking. There are software tools available that claim to facilitate porting including Oracle Translation Scratch Editor,[5] CEITON MSSQL/Oracle Compiler [6] and SwisSQL.[7] The StepSqlite product is a PL/SQL compiler for the popular small database SQLite. PL/SQL Program Unit A PL/SQL program unit is one of the following: PL/SQL anonymous block, procedure, function, package specification, package body, trigger, type specification, type body, library. Program units are the PL/SQL source code that is compiled, developed and ultimately executed on the database. The basic unit of a PL/SQL source program is the block, which groups together related declarations and statements. A PL/SQL block is defined by the keywords DECLARE, BEGIN, EXCEPTION, and END. These keywords divide the block into a declarative part, an executable part, and an exception-handling part. The declaration section is optional and may be used to define and initialize constants and variables. If a variable is not initialized then it defaults to NULL value. The optional exception-handling part is used to handle run time errors. Only the executable part is required. A block can have a label. Package Packages are groups of conceptually linked functions, procedures, variables, PL/SQL table and record TYPE statements, constants, cursors etc. The use of packages promotes re-use of code. Packages are composed of the package specification and an optional package body. The specification is the interface to the application; it declares the types, variables, constants, exceptions, cursors, and subprograms available. The body fully defines cursors and subprograms, and so implements the specification. Two advantages of packages are: Modular approach, encapsulation/hiding of business logic, security, performance improvement, re-usability. They support object-oriented programming features like function overloading and encapsulation. Using package variables one can declare session level (scoped) variables, since variables declared in the package specification have a session scope.
Views: 68842 radhikaravikumar
What is View in PL SQL
 
03:56
What is a View What are the Advantages of Views. For More detail you can visit our facebook Page , Facebook Group our blog Facebook Page https://www.facebook.com/SQL-PLSQL-Developer-Interview-QA-249157952111412/?ref=page_internal ------------------------------------------------- Join our group on Facebook https://www.facebook.com/groups/14648... -------------------------------------------------------------------------------- Visit our blog http://oracletemple.blogspot.in/ -------------------------------------------------------------------------------- Useful plsql books link. http://goo.gl/XMy0tt ------------------------------------------------- Watch More... What is Parameterized Cursor in Oracle https://www.youtube.com/watch?v=JMKwH... What is autonomous transaction in Oracle. https://www.youtube.com/watch?v=gyvFa... What are Constraints available in Oracle. https://www.youtube.com/watch?v=Wivhd... What is Mutation Error and How to avoid mutation. https://www.youtube.com/watch?v=CbWNC... 5 Effective way to delete Duplicate rows https://www.youtube.com/watch?v=1wtTt... What is Difference between Delete and Truncate https://www.youtube.com/watch?v=7b6wQ...
Views: 16607 Ram Gupta
Oracle APEX - Interactive Grid
 
06:21
Code ---------------------- begin case :APEX$ROW_STATUS when 'C' then insert into emp ( empno, ename, deptno ) values ( :EMPNO, :ENAME, :DEPTNO ) returning rowid into :ROWID; when 'U' then update emp set ename = :ENAME, deptno = :DEPTNO where rowid = :ROWID; when 'D' then delete emp where rowid = :ROWID; end case; end;
Views: 4475 Oracle Apex
Reference partitioning in Oracle 11g
 
09:50
The video explains Reference partitioning and its advantages in Oracle with real project example. It builds on the limitations of reference partitioning in oracle 11g (Interval partitioning) and scenarios where you should implement reference partitioning
Views: 2050 Tech Coach
Oracle | Sequence & Synonyms by Dinesh
 
39:34
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............
How to Fetch Latest record/row from the Table in Oracle Database
 
03:32
You will learn how to How to Fetch Latest record/row from the Table in Oracle Database. Realtime Scenario: This logic can be implemented to find whether the latest record should be inserted or updated to datawarehouse
Oracle Virtual Column vs pseudo column
 
03:18
Oracle Virtual Column vs pseudo column Details on pseudo column @ https://youtu.be/GIGmZwShGh4 Details on Virtual Column @ https://youtu.be/qUALFDzLDJw
Views: 100 Siva Academy
difference between view and materialized view
 
03:29
difference between view and materialized view Based upon on our understanding of View and Materialized View, Let’s see, some short difference between them : 1) The first difference between View and materialized view is that In Views query result is not stored in the disk or database but Materialized view allow to store the query result in disk or table. 2) Another difference between View vs materialized view is that, when we create a view using any table, rowid of view is same as the original table but in case of Materialized view rowid is different. See Oracle PL/SQL Programming: Covers Versions Through Oracle Database 12c for more details on materialized view in Oracle. 3) One more difference between View and materialized view in the database is that In case of View we always get latest data but in case of Materialized view we need to refresh the view for getting latest data. 4) Performance of View is less than Materialized view. 5) This is continuation of first difference between View and Materialized View, In case of view its only the logical view of table no separate copy of table but in case of Materialized view we get physically separate copy of table 6) Last difference between View vs Materialized View is that In case of Materialized view we need an extra trigger or some automatic method so that we can keep MV refreshed, this is not required for views in the database.
Views: 49 P T
SQL: Explain Plan for knowing the Query performance
 
05:17
In this tutorial, you'll learn how to compare queries to know the better performance query..
Views: 99196 radhikaravikumar
Merge Statement in Oracle SQL with Example (UPDATE/DELETE or INSERT)
 
15:04
This video demonstrates how to write a Merge Statement in oracle sql, how it is useful in doing a conditional update or delete or both of them when the condition between the target table and source table is evaluated to true, and how we can insert the record into the target table when condition is evaluated to false. The video also shows the use of UPDATE, DELETE and INSERT with Merge, and also the various possible ways to use a Merge statement!!!
Views: 9527 Kishan Mashru
Working with Sequences in SQL | Oracle SQL Tutorial Videos | Mr.Vijay Kumar
 
17:55
Working with Sequences in SQL | Oracle SQL Tutorial Videos | Mr.Vijay Kumar ** For Online Training Registration: https://goo.gl/r6kJbB ► Call: +91-8179191999 💡 Visit Our Website for Classroom Training: https://nareshit.in/oracle-training/ 💡 For Online Training: https://nareshit.com/oracle-online-training/ #Oracle #Training #CourseVideos -------------------------- 💡 About NareshIT: "Naresh IT is having 14+ years of experience in software training industry and the best Software Training Institute for online training, classroom training, weekend training, corporate training of Hadoop, Salesforce, AWS, DevOps, Spark, Data Science, Python, Tableau, RPA , Java, C#.NET, ASP.NET, Oracle, Testing Tools, Silver light, Linq, SQL Server, Selenium, Android, iPhone, C Language, C++, PHP and Digital Marketing in USA, Hyderabad, Chennai and Vijayawada, Bangalore India which provides online training across all the locations -------------------------- 💡 Our Online Training Features: 🎈 Training with Real-Time Experts 🎈 Industry Specific Scenario’s 🎈 Flexible Timings 🎈 Soft Copy of Material 🎈 Share Videos of each and every session. -------------------------- 💡 Please write back to us at 📧 [email protected]/ 📧 [email protected] or Call us at the USA: ☎+1404-232-9879 or India: ☎ +918179191999 -------------------------- 💡 Check The Below Links ► For Course Reg: https://goo.gl/r6kJbB ► Subscribe to Our Channel: https://goo.gl/q9ozyG ► Circle us on G+: https://plus.google.com/+NareshIT ► Like us on Facebook: https://www.facebook.com/NareshIT ► Follow us on Twitter: https://twitter.com/nareshitek ► Follow us on Linkedin: https://goo.gl/CRBZ5F ► Follow us on Instagram: https://goo.gl/3UXYK3
Views: 11861 Naresh i Technologies
ORACLE SQL AND PL/SQL INTERVIEW QUESTION : SUBQUERY WITH NULL / NOT IN / NOT EXISTS OR OUTER JOIN
 
08:36
This video demonstrates the oracle sql interview question where one need to use either not in, not exists or an outer join to get the desired result. For example if one is asked to fetch records from department table where department_id is not present in employee table
Views: 2111 Kishan Mashru
Oracle Database11g tutorials 8 || SQL DISTINCT with multiple columns |SQL Distinct with Two columns
 
04:33
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: 100744 Manish Sharma
Difference between rank dense rank and row number in SQL
 
04:43
row_number vs rank vs dense_rank in sql server dense_rank vs rank vs row_number sql server rank dense_rank row_number in sql server In this video we will discuss the similarities and difference between RANK, DENSE_RANK and ROW_NUMBER functions in SQL Server. Similarities between RANK, DENSE_RANK and ROW_NUMBER functions Returns an increasing integer value starting at 1 based on the ordering of rows imposed by the ORDER BY clause (if there are no ties) ORDER BY clause is required PARTITION BY clause is optional When the data is partitioned, the integer value is reset to 1 when the partition changes SQL Script to create the 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', 6000) Insert Into Employees Values (2, 'John', 'Male', 8000) Insert Into Employees Values (3, 'Pam', 'Female', 4000) Insert Into Employees Values (4, 'Sara', 'Female', 5000) Insert Into Employees Values (5, 'Todd', 'Male', 3000) Notice that no two employees in the table have the same salary. So all the 3 functions RANK, DENSE_RANK and ROW_NUMBER produce the same increasing integer value when ordered by Salary column. SELECT Name, Salary, Gender, ROW_NUMBER() OVER (ORDER BY Salary DESC) AS RowNumber, RANK() OVER (ORDER BY Salary DESC) AS [Rank], DENSE_RANK() OVER (ORDER BY Salary DESC) AS DenseRank FROM Employees You will only see the difference when there ties. Now let's include duplicate values for Salary column. To do this First delete existing data from the Employees table DELETE FROM Employees Insert new rows with duplicate valuse for Salary column Insert Into Employees Values (1, 'Mark', 'Male', 8000) Insert Into Employees Values (2, 'John', 'Male', 8000) Insert Into Employees Values (3, 'Pam', 'Female', 8000) Insert Into Employees Values (4, 'Sara', 'Female', 4000) Insert Into Employees Values (5, 'Todd', 'Male', 3500) Notice 3 employees have the same salary 8000. When you execute the following query you can clearly see the difference between RANK, DENSE_RANK and ROW_NUMBER functions. SELECT Name, Salary, Gender, ROW_NUMBER() OVER (ORDER BY Salary DESC) AS RowNumber, RANK() OVER (ORDER BY Salary DESC) AS [Rank], DENSE_RANK() OVER (ORDER BY Salary DESC) AS DenseRank FROM Employees Difference between RANK, DENSE_RANK and ROW_NUMBER functions ROW_NUMBER : Returns an increasing unique number for each row starting at 1, even if there are duplicates. RANK : Returns an increasing unique number for each row starting at 1. When there are duplicates, same rank is assigned to all the duplicate rows, but the next row after the duplicate rows will have the rank it would have been assigned if there had been no duplicates. So RANK function skips rankings if there are duplicates. DENSE_RANK : Returns an increasing unique number for each row starting at 1. When there are duplicates, same rank is assigned to all the duplicate rows but the DENSE_RANK function will not skip any ranks. This means the next row after the duplicate rows will have the next rank in the sequence. Text version of the video http://csharp-video-tutorials.blogspot.com/2015/10/difference-between-rank-denserank-and.html Slides http://csharp-video-tutorials.blogspot.com/2015/10/difference-between-rank-denserank-and_2.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: 43038 kudvenkat
Hash Partitioning in Oracle
 
16:25
The Video explains Hash partitioning in oracle and how it focuses on equal data distribution. It explains how hash partitioning uses partition joins to improve performance in VLDB by MPP.
Views: 6423 Tech Coach
Indexing in Oracle :B-Tree,Bitmap Indexing
 
25:48
This Video is the 1st tutorial in the video series Indexing in Oracle , The video series explains in detail, What are indexes?It's types, what index should be used in which scenario and other important thing in basic terminology. Note :You may want to watch the video with a higher playback speed(1.25 if it suits you more)
Views: 17615 Tech Coach
How to transpose column to row in sql
 
12:43
Hi friends today we will learn how to transpose column data into row of table. #transposecolumntorow Oracle database Unbeatable,Unbreakable Platform..
Views: 16815 Oracle World
How to Remove duplicates from Table using SQL query(Oracle) (rowid)
 
02:31
How to Remove duplicates from Table using SQL query(Oracle) (rowid).. SQL Analysis
Views: 6569 vishwanth suraparaju