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Oracle sql Interview Question : How to change rows to column
 
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This video tutorial talks about the frequently asked oracle sql interview question of changing rows to the column. Based on the given scenario, we are asked to change the presentation of data in a table with 3 rows and 2 column to 3 columns and 2 rows. Decode Function in oracle https://youtu.be/YUAjPMjqMws Pivot and unpivot in oracle https://youtu.be/6s0DI1YcWIM
Views: 21085 Kishan Mashru
Oracle Database11g tutorials 14 : How to CREATE TABLE using sql developer and command prompt
 
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Oracle Database11g tutorials 14 How to Create table using command prompt and Create table using sql developer Blog Link http://bit.ly/1TkY4Oe Time Line 0:25 Introduction of Tables in Database 1:03 What is Create Table (Introduction of create table) 1:30 Syntax of Create Table 2:08 How to create table using Command Prompt 4:55 How to create table using SQL Developer Links for Oracle Database tutorials 4: database connectivity using SQL developer and command prompt http://youtu.be/wSqoXRlXDUU You can have indepth knowledge about SQL create table here http://www.rebellionrider.com/sql-create-table.html Tool used in this tutorial is command prompt. 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 E-Mail [email protected] Twitter https://twitter.com/rebellionrider Instagram http://instagram.com/rebellionrider Facebook. https://www.facebook.com/imthebhardwaj Linkedin. http://in.linkedin.com/in/mannbhardwaj/ Thanks for linking, commenting, sharing and watching more of our videos This is Manish from RebellionRider.com Today in this oracle database tutorial we will see How to CREATE A TABLE. if we have to define a table in layman language then we can say that Tables are just a collection of Rows and Columns but In RDBMS tables are database objects which help in organizing data into ROWS and COLUMNS. We can also say that SQL tables are kind of data structure which are used by database for efficient storage of data. To create a table in our database we use SQL CREATE TABLE command. SQL CREATE TABLE is a type of DATA DEFINITION LANGUAGE also known as DDL. To Create a table in your schema you will require CREATE TABLE system privilege. In our future videos we will see what are system and object privileges and how to grant them to a user. Today for this video we will be using Sample schema HR which already has all the necessary privileges. Ohk Let's see the syntax. CREATE TABLE table name ( column name1 Data-Type(size), column name2 Data-Type(size), ..... ); CREATE TABLE is an oracle reserved word or say an Oracle key word whereas There are 3 different ways of creating a table in Oracle database. Creating a table using Command Line Interface (CLI) in Oracle database For demonstrating how to create table in oracle database using CLI, I'll be using Command prompt. Thats how we create table using command prompt. you can check your table structure by DESCRIBE command for that just write DESC and your table name. Like this Another way of creating a table is by using Graphic user interface (GUI) in Oracle database To demonstrate how to create table using GUI we will use SQL developer. Lets open our SQL developer I am connected to HR schema if you do not know how to create a connection to database using SQL developer please watch my oracle database tutorial 4 that explains database connectivity using SQL developer and command prompt. Link for this video is in the description below. So lets create a table. Creating a table using SQL developer is very easy we do not have to fire any query here. Let's start First of all right click on your connection in which you want to create a table and choose schema browser. This will open a separate schema browser pane or you can expend your connection by clicking this + sign and then right click on table and choose New Table. However I prefer working with schema browser so let's skip to schema browser pane here from the first drop-down list you can choose connection name and in the second drop down list you can choose what database objects you want to work with we want to create a table thus I'll choose table and then click this arrow here and choose option for new table Ok we have created a table wizard first of all give a unique name to your table and add some column as well. For this, click the green plus button. Now we already have a column so give it some name. Also choose a datatype from the list and specify any size you can check this not null column if in case you want to make this a mandatory column you can also specify default value and constraint If you want to make this column a primary key you can click here In my future video i'll show you what are these constraints and different ways of applying them on a column in a table. for this video we will concentrate on create table only so when you are done with all your columns click ok Thats your table You can double click on your table here and can see its structure. Thats it
Views: 195027 Manish Sharma
Oracle SQL Query 08  Adding a column to a table  || SQL commands practice
 
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CREATE TABLE command in sql/oracle,INSERT command in sql/oracle UPDATE,ALTER PASSWORD command in sql, GRANT command, REVOKE command i, CREATE SYNONYM command in sql/oracle, DELETE command in sql/oracle, ALTER TABLE command in sql/oracle, DROP TABLE command in sql/oracle, CREATE INDEX command in sql/oracle, ALTER INDEX command in sql/oracle, DROP INDEX command in sql/oracle, CREATE VIEW command in sql/oracle, DROP VIEW command in sql/oracle USING SQL COMMAND Types of SQL Commands The following sections discuss the basic categories of commands used in SQL to perform various functions. These functions include building database objects, manipulating objects, populating database tables with data, updating existing data in tables, deleting data, performing database queries, controlling database access, and overall database administration. The main categories are DDL (Data Definition Language) DML (Data Manipulation Language) DQL (Data Query Language) DCL (Data Control Language) Data administration commands Transactional control commands Defining Database Structures Data Definition Language, DDL, is the part of SQL that allows a database user to create and restructure database objects, such as the creation or the deletion of a table. Some of the most fundamental DDL commands discussed during following hours include the following: CREATE TABLE ALTER TABLE DROP TABLE CREATE INDEX ALTER INDEX DROP INDEX CREATE VIEW DROP VIEW Manipulating Data Data Manipulation Language, DML, is the part of SQL used to manipulate data within objects of a relational database. There are three basic DML commands: INSERT UPDATE DELETE
Views: 4 Ctrl Alt Delete
How to access data from file - External Table - Oracle - Query Data from flat files
 
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In this video we can see what is the external table, how can we use it.... How to access table from a flat file? We can access data from any type of format loaded by SQL*Loader. Code: create or replace directory External_Dir as 'D:\External'; create table External_Table ( v_num number(5), v_name varchar2(20) ) ORGANIZATION EXTERNAL ( TYPE ORACLE_LOADER DEFAULT DIRECTORY External_Dir Access parameters ( RECORDS DELIMITED BY NEWLINE FIELDS TERMINATED BY ',' ) LOCATION('Sample_File.txt') );
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: 7450 Lecture Snippets
Oracle Tutorial - Rename and Modify a Column using Alter Table Statement
 
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Oracle Tutorials: Rename and Modify a Column using Alter Table Statement
Views: 96 Tech Acad
Hierarchical Queries: Databases for Developers #16
 
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Often data contains a parent-child relationship between rows in the same table. For example, company org charts and family trees. You can use the power of SQL to traverse these hierarchical relationships. There are two ways to do this in Oracle Database: - Connect By - Recursive With Watch this video to learn about data trees and find out how these work! Further reading: Hierarchical queries in the docs: https://docs.oracle.com/en/database/oracle/oracle-database/18/sqlrf/Hierarchical-Queries.html#GUID-0118DF1D-B9A9-41EB-8556-C6E7D6A5A84E Recursive subquery factoring in 11.2: https://oracle-base.com/articles/11g/recursive-subquery-factoring-11gr2 Take the course! https://devgym.oracle.com/pls/apex/dg/class/databases-for-developers-next-level.html Need help with SQL? Ask us over on AskTOM: https://asktom.oracle.com Twitter: https://twitter.com/ChrisRSaxon Daily SQL Twitter tips: https://twitter.com/SQLDaily 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: 6642 The Magic of SQL
Learn Oracle SQL : The Hierarchical Query Clause
 
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http://bit.ly/oracle-sql-course | Get the complete course today. Learn Oracle SQL : The Hierarchical Query Clause: In this video, I show you how to use the Hierarchical Query Clause in Oracle SQL to build a basic hierarchical query. This is an excerpt of the course "The Ultimate Oracle SQL Course" which you can get at a heavily discounted price here: http://bit.ly/oracle-sql-course ================ You can find additional Oracle SQL related articles and educational content in my blog here: http://standout-dev.com/
Views: 11699 Oracle SQL
SQL Tutorial - 21: The UPDATE Query
 
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In this tutorial we'll check out the UPDATE Query which is used to update/change records in a table.
Views: 103169 The Bad Tutorials
Oracle SQL Tutorial 9 - Intro to Queries
 
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This video is for beginners who have never worked with SQL Developer, and we are going to teach how to begin writing queries. So the queries we are going to start with are queries when we give the database an expression and it will return back some kind of value. The most common keyword you are going to need to know for Oracle is SELECT. SELECT is the command we use to get data from the database. Even though we have not really put any data in our database, we can still use the SELECT statement to get data. That's because the database is capable of doing more than just creating tables and retrieving data from tables. So our first goal is to essentially write a Hello World, which just displays the text hello world to us. A good place to start is with: SELECT 'Hello World' This would actually work for many database management systems, but when you run it you will get an error. This actually doesn't work with Oracle, it will tell us we always need the FROM keyword. To get around this, there is a magical table called DUAL. We can put anything we want to SELECT and then say FROM DUAL and it will work. SELECT 'Hello World' FROM DUAL We can also do math: SELECT 1+1 FROM DUAL And we can run even run functions: SELECT SYSTIMESTAMP FROM DUAL To put all of this together, you can grab all of this data at the same time using commas to separate different columns from our generated table: SELECT 'Hello World', 1+1, SYSTIMESTAMP FROM DUAL Support me on Patreon: http://www.patreon.com/calebcurry Subscribe to my newsletter: http://bit.ly/JoinCCNewsletter Donate!: http://bit.ly/DonateCTVM2. ~~~~~~~~~~~~~~~Additional Links~~~~~~~~~~~~~~~ More content: http://CalebCurry.com Facebook: http://www.facebook.com/CalebTheVideoMaker Google+: https://plus.google.com/+CalebTheVideoMaker2 Twitter: http://twitter.com/calebCurry Amazing Web Hosting - http://bit.ly/ccbluehost (The best web hosting for a cheap price!)
Views: 35425 Caleb Curry
Oracle Database 12c: Easy Top N and Pagination Queries
 
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Pagination queries using the row limiting clause to fetch N rows or a percentage of rows in a table. For more information, see [Limiting SQL Rows](http://www.oracle.com/pls/topic/lookup?ctx=db121&id=DWHSG9188), [row_limiting_clause](http://www.oracle.com/pls/topic/lookup?ctx=db121&id=SQLRF55636).
Views: 3795 OracleDBVision
Intermediate To Advanced SQL Queries #2: Pivoting Tables
 
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In this tutorial, we will cover a special case of pivoting tables in SQL using MySQL as a DBMS. Think of pivoting tables as selecting unique values and assigning them to their own columns. The solution code can be found on my website here: http://programmingforfinance.com/2017/10/pivoting-tables-with-mysql/
Views: 5409 codebliss
Oracle Database 12c demos: In-Memory Column Store Queries
 
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The demonstration illustrates how queries on in-memory objects and columns data populated within the IM column store execute. The demo also shows how fast the queries execute against the In-Memory column store compared to the buffer cache.
SQL Tutorial - PIVOT
 
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Another video brought to you by BeardedDev, bringing you tutorials on Business Intelligence, SQL Programming and Data Analysis. In this video I talk about using PIVOT in Microsoft SQL Server. T-SQL Querying https://www.amazon.com/gp/product/0735685045/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=0735685045&linkCode=as2&tag=beardeddev05-20&linkId=e93b0f7483b1fa06aca5a3aec4f7764b T-SQL Fundamentals https://www.amazon.com/gp/product/150930200X/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=150930200X&linkCode=as2&tag=beardeddev05-20&linkId=70aa2ffa3e84cab66cb964ca1e9cee62 Microsoft SQL Server 2012 High-Performance T-SQL Using Window Functions https://www.amazon.com/gp/product/0735658366/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=0735658366&linkCode=as2&tag=beardeddev05-20&linkId=b88746aea666c9f98da147e70b4491ca Using PIVOT allows us rotate data from rows to columns making the data more readable. PIVOT is ideal for reporting in SQL Server and can be used as a starting point to visualise trends. In this PIVOT tutorial I demonstrate the difference between how data is presented compared to GROUP BY. PIVOT Syntax SELECT [columns] FROM ( [source_query] ) PIVOT ( [aggr_function]([aggr_column] FOR [spreading_column] IN ([spreading_elements])) SQL Queries in the video: Results using GROUP BY statement SELECT Sales_Customer_Id , DATENAME(MONTH, Sales_Date) AS [Month] , Sales_Amount FROM dbo.Sales GROUP BY Sales_Customer_Id , DATENAME(MONTH, Sales_Date) Results using PIVOT statement SELECT Sales_Customer_Id , [January] , [February] , [March] FROM ( SELECT Sales_Customer_Id , DATENAME(MONTH, Sales_Date) AS [Month] , Sales_Amount FROM dbo.Sales ) AS Src PIVOT ( SUM(Sales_Amount) FOR [Month] IN ([January], [February], [March]) ) AS Pvt Alternative PIVOT statement SELECT [Month] , [1] , [2] , [3] , [4] , [5] , [6] , [7] , [8] FROM ( SELECT Sales_Customer_Id , DATENAME(MONTH, Sales_Date) AS [Month] , Sales_Amount FROM dbo.Sales ) AS Src PIVOT ( SUM(Sales_Amount) FOR Sales_Customer_Id IN ([1], [2], [3], [4], [5], [6], [7], [8]) ) AS Pvt Please feel free to post comments.
Views: 6981 BeardedDev
Tutorial#73 How to Rename Multiple Columns in Single Query in Oracle SQL Database
 
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Explaining how to alter/Rename columns in Single Query of oracle database, this can be the interview question for Oracle SQL follow me on: Facebook Page: https://www.facebook.com/LrnWthr-319371861902642/?ref=bookmarks Contacts Email: [email protected] Instagram: https://www.instagram.com/equalconnect/ Twitter: https://twitter.com/LrnWthR #Oracle #equalConnectCoach #rakeshmalviya
Views: 118 EqualConnect Coach
Part 6   Transform rows into columns in sql server
 
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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-6-transform-rows-into-columns-in.html This is another common sql server interview question. We will be using Countries table in this example. SQL to create the table Create Table Countries ( Country nvarchar(50), City nvarchar(50) ) GO Insert into Countries values ('USA','New York') Insert into Countries values ('USA','Houston') Insert into Countries values ('USA','Dallas') Insert into Countries values ('India','Hyderabad') Insert into Countries values ('India','Bangalore') Insert into Countries values ('India','New Delhi') Insert into Countries values ('UK','London') Insert into Countries values ('UK','Birmingham') Insert into Countries values ('UK','Manchester') Here is the interview question. Write a sql query to transpose rows to columns. Using PIVOT operator we can very easily transform rows to columns. Select Country, City1, City2, City3 From ( Select Country, City, 'City'+ cast(row_number() over(partition by Country order by Country) as varchar(10)) ColumnSequence from Countries ) Temp pivot ( max(City) for ColumnSequence in (City1, City2, City3) ) Piv
Views: 218397 kudvenkat
Data Dictionary View in Oracle | Oracle Data Dictionary Query | Oracle Sql Developer | Oracle SQL
 
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JSON in Oracle 12C Part 1 - Creating JSON Columns in Tables
 
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This is the first video in a series of videos on how to handle JSON data in Oracle 12C. In this video, I'll show you how to create columns in a table that will be used to hold JSON data.
Views: 6038 Pretty Printed
08 of  13 - Oracle APEX 5 - List of values (LOV) for a field in a form; display a hidden column
 
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A new series using APEX 18.1 is now available. https://youtu.be/vgrkiIpJEiQ This is one in a series of videos about creating an application using Oracle APEX 5. In this video we create two lists of values (LOVs) in the Shared Components section of our application. We use each LOV in place of a field in a form. We see how APEX will help us write the SQL for a LOV. The difference between a "display value"and a "return value"is discussed. Finally, we display the primary key field in a form, which APEX hides by default. See the primary key field in a form can be helpful during application development. SQL scripts for this series are available to download at: http://db.kreie.net
Views: 41547 Jennifer Kreie
Excel Magic Trick 1349: Power Query with Input Variables from Excel Sheet to Extract Records
 
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Download File: http://people.highline.edu/mgirvin/excelisfun.htm See how to use Power Query (Get & Transform) with Input Variables from Excel Sheet to Extract Records and create a Revenue Report. Here are the steps: 1. (00:15) Introduction including Preview of Finished Solution and Preview of steps necessary to accomplish this goal. 2. (02:00) Import and transform Data Set, including removing Columns, Filter For Records and adding an extra Column to calculate Net Revenue using the Number.Round Power Query Function. 3. (06:38) Load Report to Sheet 4. (07:09) Import each Parameter/Criteria Table. 5. (07:36) Convert each Criteria Table to a single Text Item using the Record.Field Power Query Function. 6. (11:38) Declare and Insert Variables into M Code for Report 7. (14:10) Test Reporting System 8. (14:30) Create Recorded Macro To Refresh All and assign it to a Form button 9. (16:40) Test Macro and Reporting System 10. (17:25) Summary
Views: 95898 ExcelIsFun
flashback in Oracle | Oracle SQL Tutorial Videos | Mr.Vijay Kumar
 
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flashback in Oracle | 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: 18461 Naresh i Technologies
SQL Tutorial - 14: The SELECT Query
 
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In this tutorial we'll talk about the SELECT Statement in SQL that is used to pull data from tables in a database.
Views: 93976 The Bad Tutorials
SQL: Delete Vs Truncate Vs Drop
 
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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: 76526 radhikaravikumar
Getting Started with PL/SQL Table Functions: Pipelined Table Functions
 
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Pipelined table functions are table functions in which rows are returned or "piped" back to the calling query before the function has completed, avoiding the blocking behavior of normal PL/SQL functions and reduce PGA consumption. This video is part of the Oracle Dev Gym class "Getting Started with Table Functions". You can watch it independent of the class, but then you miss out on the tutorials and quizzes! So visit https://devgym.oracle.com/pls/apex/dg/class/getting-started-with-pl-sql-table-functions.html and register for the class! ======================================== Practically Perfect PL/SQL with Steven Feuerstein Copyright © 2018 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.
Getting Started with PL/SQL Table Functions 2. Returning Multiple Columns
 
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In this second module in the series, Steven Feuerstein explores the code you need to write when you want your table function to return an array with multiple columns. Best taken as part of the Oracle Dev Gym PL/SQL Table Functions class: https://devgym.oracle.com/pls/apex/dg/class/pl-sql-table-functions.html ======================================== Practically Perfect PL/SQL with Steven Feuerstein Copyright © 2018 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.
How to Join 3 tables in 1 SQL query
 
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Get your first month on the Joes 2 Pros Academy for just $1 with code YOUTUBE1. Visit http://www.joes2pros.com Offer expires July 1, 2015 From the newly released 2 Disc DVD set (SQL Queries Joes 2 Pros Vol2) this video shows how to join 3 tables in 1 query.
Views: 273755 Joes2Pros SQL Trainings
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: 194891 Joes2Pros SQL Trainings
Oracle SQL Developer: Query Builder Demo
 
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How to build queries with your mouse versus the keyboard. 2018 Update: If you'd like to see how to convert your Oracle style JOINS to ANSI style (in the FROM vs the WHERE clause) see this post https://www.thatjeffsmith.com/archive/2018/10/query-builder-on-inline-views-and-ansi-joins/
Views: 84227 Jeff Smith
SQL script to insert into many to many table
 
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Text Article http://csharp-video-tutorials.blogspot.com/2017/02/sql-script-to-insert-into-many-to-many.html Slides http://csharp-video-tutorials.blogspot.com/2017/02/sql-script-to-insert-into-many-to-many_6.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 how to insert data into a table that has many-to-many relationship Create table Students ( Id int primary key identity, StudentName nvarchar(50) ) Go Create table Courses ( Id int primary key identity, CourseName nvarchar(50) ) Go Create table StudentCourses ( StudentId int not null foreign key references Students(Id), CourseId int not null foreign key references Courses(Id) ) Go Students - Id column is identity column Courses - Id column is identity column StudentCourses - StudentId and CourseId columns are foreign keys referencing Id column in Students and Courses tables As you can see, StudentCourses is a bridge table that has many to many relationship with Students and Courses tables. This means a given student can be enrolled into many courses and a given course can have many students enrolled. Below is the question asked in an interview for SQL Server Developer role. Write a SQL script to insert data into StudentCourses table. Here are the rules that your script should follow. 1. There will be 2 inputs for the script Student Name - The name of the student who wants to enroll into a course Course Name - The name of the course the student wants to enroll into 2. If the student is already in the Students table, then use that existing Student Id. If the student is not already in the Students table, then a row for that student must be inserted into the Students table, and use that new student id. 3. Along the same lines, if the course is already in the Courses table, then use that existing Course Id. If the course is not already in the Courses table, then a row for that course must be inserted into the Courses table, and use that new course id. 4. There should be no duplicate student course enrollments, i.e a given student must not be enrolled in the same course twice. For example, Tom must not be enrolled in C# course twice. Answer : To avoid duplicate student course enrollments create a composite primary key on StudentId and CourseId columns in StudentCourses table. With this composite primary key in place, if someone tries to enroll the same student in the same course again we get violation of primary key constraint error. Alter table StudentCourses Add Constraint PK_StudentCourses Primary Key Clustered (CourseId, StudentId) Here is the SQL script that inserts data into the 3 tables as expected Declare @StudentName nvarchar(50) = 'Sam' Declare @CourseName nvarchar(50) = 'SQL Server' Declare @StudentId int Declare @CourseId int -- If the student already exists, use the existing student ID Select @StudentId = Id from Students where StudentName = @StudentName -- If the course already exists, use the existing course ID Select @CourseId = Id from Courses where CourseName = @CourseName -- If the student does not exist in the Students table If (@StudentId is null) Begin -- Insert the student Insert into Students values(@StudentName) -- Get the Id of the student Select @StudentId = SCOPE_IDENTITY() End -- If the course does not exist in the Courses table If (@CourseId is null) Begin -- Insert the course Insert into Courses values(@CourseName) -- Get the Id of the course Select @CourseId = SCOPE_IDENTITY() End -- Insert StudentId & CourseId in StudentCourses table Insert into StudentCourses values(@StudentId, @CourseId) If required, we can very easily convert this into a stored procedure as shown below. Create procedure spInsertIntoStudentCourses @StudentName nvarchar(50), @CourseName nvarchar(50) as Begin Declare @StudentId int Declare @CourseId int Select @StudentId = Id from Students where StudentName = @StudentName Select @CourseId = Id from Courses where CourseName = @CourseName If (@StudentId is null) Begin Insert into Students values(@StudentName) Select @StudentId = SCOPE_IDENTITY() End If (@CourseId is null) Begin Insert into Courses values(@CourseName) Select @CourseId = SCOPE_IDENTITY() End Insert into StudentCourses values(@StudentId, @CourseId) End Use the following statement to execute the stored procedure Execute spInsertIntoStudentCourses 'Tom','C#'
Views: 103686 kudvenkat
How to Create Table Oracle Datbase Using Sqlplus [Hindi/Urdu].
 
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Hi Friends !!!!! In this video we will show the how the create table using sqlplus usin this command. Open cmd type Sqlplus enter First connect the Database Enter workspace name entre password Show of all the table in your database is query is a) Select * from tab; Create table Query is b) Create table Student_Information( E_name varchar2(25), E_ID number(10), E_Designation varchar2(20)); Where Student_Information is table name Related video Links : How to Install Java Netbeans IDE in Windows 7, 8.1, 10 [Hindi/Urdu]: https://youtu.be/jOYMNognZXM How To Install Java On Window 10, 8.1, 7 64 bit Operating System [Hindi/Urdu] : https://youtu.be/y2-g09nY33A How to install Windows 7, 8.1,10 from a flash drive or Pandrive . [Hindi/Urdu] : https://youtu.be/s4kNcirxWrc How to Make Bootable Your Pandrive [Hindi/Urdu] : https://youtu.be/BPx_Ua_aCfY How to install Oracle 11G XE On Windows 10, 8.1, 7 Operating System in [Hindi/Urdu] : https://youtu.be/-2k4QCIpIOs How to Create Table Oracle Datbase Using Sqlplus [Hindi/Urdu] : https://youtu.be/EHnAebRP6Yw How To Insert Table Oracle Database Using Sqlplus [Hindi/Urdu]: https://youtu.be/Fu0tlCml8F8 How TO DELETE ROW, MODIFY, UPDATE COLUMN, DROP TABLE in Oracle SQL Using Cmd [Hindi/Urdu]: https://youtu.be/prz9Pr0PFEg How to recover format or delete Pandrive, Sdcard, Memory Card Or Harddisk Data [Hindi/Urdu] : https://youtu.be/0GGDHVTxDh0 How to install Oracle SQl Developer And How to Connect Your Database Sql Developer[Hindi/Urdu] : https://youtu.be/608nx3mT10c How to use SQL Distinct Keyword in Cmd Or Oracle SQL Developer [Hindi/Urdu] : https://youtu.be/ofLLZ9-EG_E How to use SQL AND Or OR operator [Hindi/Urdu] : https://youtu.be/zzqDp7U3rC8 How To Use SQL Where Operation using CMD [Hindi/Urdu] : https://youtu.be/EHmL0Wa14UY How To Use SQL ASC and DESC Operation using cmd [Hindi/Urdu] : https://youtu.be/UI0hat_RMX0 For Any Query Email Add : [email protected] Facebook Page link : https://www.facebook.com/Technical-Education-4-You-144220269545756/?ref=nf&hc_ref=ART3p2EX_iIdZHm96Uz36P99q7xfycGfo54RJafY-f0O4n1bdvWU_5xGHpPrOpLepi4
Learn Oracle SQL : Table and Column Aliases
 
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http://bit.ly/oracle-sql-course | Get the complete course today. Learn Oracle SQL : Table And Column Aliases : In this video I explain what aliases are and why you would want to uses aliases for tables and columns, and show you the different ways you can use the define them. This is an excerpt of the course " Oracle SQL From Scratch " which you can get at a discounted price here: http://bit.ly/oracle-sql-course You can find additional Oracle SQL related articles and educational content in my blog here: http://standout-dev.com/
Views: 314 Oracle SQL
Converting JSON Data to Relational Data in Oracle 12C
 
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JSON data is nice, but it is difficult to work with directly in Oracle. By converting it to relational data (rows and columns) we can easily work with it. This video demonstates how to convert JSON data to relational data using json_table.
Views: 7445 Pretty Printed
Part 2   SQL query to get organization hierarchy
 
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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/2014/05/part-2-sql-query-to-get-organization.html To get the best out of this video, the following concepts need to be understood first. These are already discussed in SQL Server Tutorial. 1. Self-Join - http://www.youtube.com/watch?v=qnYSN_7qwgg 2. CTE - http://www.youtube.com/watch?v=ZXB5b-7HJHk 3. Recursive CTE - http://www.youtube.com/watch?v=GGoV0wTMCg0 Here is the problem definition: 1. Employees table contains the following columns a) EmployeeId, b) EmployeeName c) ManagerId 2. If an EmployeeId is passed, the query should list down the entire organization hierarchy i.e who is the manager of the EmployeeId passed and who is managers manager and so on till full hierarchy is listed. For example, Scenario 1: If we pass David's EmployeeId to the query, then it should display the organization hierarchy starting from David. Scenario 2: If we pass Lara's EmployeeId to the query, then it should display the organization hierarchy starting from Lara. We will be Employees table for this demo. SQL to create and populate Employees table with test data Create table Employees ( EmployeeID int primary key identity, EmployeeName nvarchar(50), ManagerID int foreign key references Employees(EmployeeID) ) GO Insert into Employees values ('John', NULL) Insert into Employees values ('Mark', NULL) Insert into Employees values ('Steve', NULL) Insert into Employees values ('Tom', NULL) Insert into Employees values ('Lara', NULL) Insert into Employees values ('Simon', NULL) Insert into Employees values ('David', NULL) Insert into Employees values ('Ben', NULL) Insert into Employees values ('Stacy', NULL) Insert into Employees values ('Sam', NULL) GO Update Employees Set ManagerID = 8 Where EmployeeName IN ('Mark', 'Steve', 'Lara') Update Employees Set ManagerID = 2 Where EmployeeName IN ('Stacy', 'Simon') Update Employees Set ManagerID = 3 Where EmployeeName IN ('Tom') Update Employees Set ManagerID = 5 Where EmployeeName IN ('John', 'Sam') Update Employees Set ManagerID = 4 Where EmployeeName IN ('David') GO Here is the SQL that does the job Declare @ID int ; Set @ID = 7; WITH EmployeeCTE AS ( Select EmployeeId, EmployeeName, ManagerID From Employees Where EmployeeId = @ID UNION ALL Select Employees.EmployeeId , Employees.EmployeeName, Employees.ManagerID From Employees JOIN EmployeeCTE ON Employees.EmployeeId = EmployeeCTE.ManagerID ) Select E1.EmployeeName, ISNULL(E2.EmployeeName, 'No Boss') as ManagerName From EmployeeCTE E1 LEFT Join EmployeeCTE E2 ON E1.ManagerID = E2.EmployeeId
Views: 316979 kudvenkat
Oracle Big Data SQL: 1 - Query JSON Data
 
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This video shows you how to create an Oracle external table over JSON format data and query the JSON data via the external table using Oracle Big Data SQL. ================================= To improve the video quality, click the gear icon and set the Quality to 1080p/720p HD. For more information, see http://www.oracle.com/goto/oll and http://docs.oracle.com Copyright © 2018 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.
Analytical Functions in oracle explained with real examples
 
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This video explains analytical functions and how they are implemented in real projects. Analytical functions are somewhat similar to aggregate functions,but they offer much more. Why use analytical function ? They allow you to write fast and concise queries which otherwise will involve self join and long processing times They allow you to perform aggregate functions independently on sets of partitions. You can access values from previous rows in current row and you can restrict the window on which you want to apply this analytical function. I have given additional practice exercises along with the dataset so that you can comfortably work with analytical functions. You can find the sample problems along with dataset in the below link. http://www.internshipsfromhome.com/oracle-analytical-functions-ddl-and-dml/
Views: 31330 Tech Coach
SQL: Explain Plan for knowing the Query performance
 
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In this tutorial, you'll learn how to compare queries to know the better performance query..
Views: 104830 radhikaravikumar
How to find nth Max salary in a table
 
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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: 15031 Kishan Mashru
How to aggregate ROWS in Oracle SQL
 
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In this training video we will learn how to use aggregation operators in Oracle SQL
Views: 29 Spod ssppoodd
Oracle SQL Injection and DIOS query
 
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Disclaimer: Only For Educational Purposes Long Story Short, Demonstration of Oracle SQL Injection With a Dump In One shot Query To Get All Tables/Columns/rows In One Shot Without Much character limits Visit here for a complete tutorial : http://securityidiots.com/Web-Pentest/SQL-Injection/oracle-sql-injection-dios-query.html
Views: 5053 securityidiots.com
Oracle SQL Developer Web: CREATE and EDIT TABLEs
 
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Demonstration of using Oracle SQL Developer Web's GUIs for creating a new table or editing an existing table - all in your browser.
Views: 2003 Jeff Smith
SQL Joins Tutorial for Beginners - Inner Join, Left Join, Right Join, Full Outer Join
 
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Learn how to create SQL Joins. The first 10 minutes teach you the basics. Inner Join, Left Outer Join, Right Outer Join, and Full Outer Join. The second 10 minutes show you are few techniques that will help you as you start building joins. READ THE ORIGINAL ARTICLE WITH THE TABLE SCRIPS http://www.sqltrainingonline.com/sql-joins-tutorial-for-beginners/ YOUTUBE NEWS UPDATES http://www.youtube.com/user/sqltrainingonline VISIT SQLTRAININGONLINE.COM FOR TONS MORE VIDEO NEWS & TIPS http://www.sqltrainingonline.com SUBSCRIBE FOR OTHER SQL TIPS AND NEWS! http://www.youtube.com/subscription_center?add_user=sqltrainingonline SUBSCRIBE TO OUR EMAIL LIST! http://www.sqltrainingonline.com LET'S CONNECT! Facebook: http://facebook.com/SQLTrainingOnline Twitter: http://twitter.com/sql_by_joey Linkedin: http://linkedin.com/in/joeyblue SQLTrainingOnline: http://www.sqltrainingonline.com
Views: 244460 Joey Blue
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: 137420 kudvenkat
Indexes in SQL Server -- making queries run faster
 
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Indexes in SQL Server make queries run faster and more efficiently. With the size of databases increasing almost exponentially, being able to return results quickly with minimal stress on the underlying server is crucial. This tutorial includes a practical demonstration of performance gains obtained from creating Clustered, Non-Clustered, and Column indexes. In the demonstration clustered and non-clustered indexes result in a 10 x increase in query performance compared to using no index. The Column index results in further a 10 x increase in performance over the Clustered and Non-clustered indexes (100 x faster than using no index). The video also outlines the basic concepts behind indexes and demonstrates how to quickly created indexes in SQL Server Management studio. Code and sample databases are available from http://www.analyticsinaction.com/indexes/ I also have a comprehensive 60 minute T-SQL course available at Udemy : https://www.udemy.com/t-sql-for-data-analysts/?couponCode=ANALYTICS50%25OFF
Views: 52635 Steve Fox
SQL with Oracle 10g XE - Using GROUP BY to Group Results of a Query
 
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In this video I use the GROUP BY clause to organize the results of a function by groups or categories. If you are looking to run a function on a column and have those results grouped together then you will need to use the GROUP BY clause to run the query. This video is part of a series of videos with the purpose of learning the SQL language. For more information visit Lecture Snippets at http://lecturesnippets.com.
Views: 5825 Lecture Snippets
Selecting Individual Columns (Introduction to Oracle SQL)
 
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How to select individual columns in a SELECT statement. The full Introduction to Oracle SQL course is available here: https://www.databasestar.com/introduction-to-oracle-sql-course/
Views: 336 Database Star
Collections in Oracle PLSQL
 
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Complete Oracle PL/SQL Tutorial for Beginners Playlist here https://www.youtube.com/playlist?list=PLI5t0u6ye3FE_9SZcS0cQZDU2qn0uB1Oi ************************************************** Composite DataType - Collections in Oracle PL SQL 1. Difference Between Records and Collections 2. Types of Collections in Oracle 3. VARRAYS 4. Nested Table 3. Associative Arrays / Index BY Tables 4. Multi Dimensional Arrays Using Collections and Records
Views: 24043 yrrhelp
Leaner, Faster Code with Advanced SQL Techniques
 
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Connor Mcdonald, Developer Advocate for SQL, Oracle Most SQL is so simple to write that we can hand off the job to an ORM tool or a similar mechanism. But by delving a little deeper into more-advanced SQL facilities, we can get performance benefits and write a lot less middle-tier code. This session highlights some SQL techniques for solving problems that would otherwise require a lot of complex coding. Learn how to become a more productive developer by expanding your knowledge of the SQL language.
Views: 10443 Oracle Developers
SQL, Structured Query Language, lesson 11,  using oracle web application, Creating a table
 
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How to use different interfaces to connect to Database. Also learn how to assign constraints while creating a table.
Views: 5506 hammadshams