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SQL Tutorial in Oracle - 5 Column Alias with Order By
 
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SQL aliases are used to give a database table, or a column in a table, a temporary name. Check out our website: http://www.telusko.com Follow Telusko on Twitter: https://twitter.com/navinreddy20 Follow on Facebook: Telusko : https://www.facebook.com/teluskolearnings Navin Reddy : https://www.facebook.com/navintelusko Follow Navin Reddy on Instagram: https://www.instagram.com/navinreddy20 Subscribe to our other channel: Navin Reddy : https://www.youtube.com/channel/UCxmkk8bMSOF-UBF43z-pdGQ?sub_confirmation=1 Telusko Hindi : https://www.youtube.com/channel/UCitzw4ROeTVGRRLnCPws-cw?sub_confirmation=1
Views: 14847 Telusko
Ordering By Multiple Columns (Introduction to Oracle SQL)
 
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Learn how to order by multiple columns using ORDER BY. The full Introduction to Oracle SQL course is available here: https://www.databasestar.com/introduction-to-oracle-sql-course/
Views: 320 Database Star
Which Order Should Columns Go in an Index?: Finding All the Red Sweets Part 4
 
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When you create an index on multiple columns there's an important question you need to answer: In which order should you list the columns? This video looks at some of the factors you should consider to help answer this question. ============================ 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: 4622 The Magic of SQL
Solved!-Change Column Order in a Table - SQL Server.- Save Changes Not permitted
 
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how to change column order in sql developer change column order mysql change column order sql query change column order oracle how to change column order in sql server 2012 alter table move column oracle sql reverse column order alter column position in sql table prevent saving changes that require the table re-creation saving changes is not permitted sql 2017 saving change is not permitted the changes you have made requires the following the following tables will be saved to your database prevent saving changes option sql can t save table sql server 2008 error were encountered during the save process sql server post save notification sql server
Views: 1713 Maruti AIR Tech
07 04 Index Column Order Matters
 
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ORACLE
Views: 108 oracle ocm
SQL ORDER BY With Multiple Columns
 
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Jamie King of Neumont University demonstrating ORDER BY in regards to multiple columns.
Views: 8224 Jamie King
58. ALTER TABLE for Adding Column by Position without constraints in SQL (Hindi)
 
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Please Subscribe Channel Like, Share and Comment Visit : www.geekyshows.com
Views: 12465 Geeky Shows
APEX27 of 30: Organize IG report: change column order, group & count rows. Issue with  NULL & COUNT.
 
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APEX 18.1 video 27 of 30: Do some housekeeping: Assign new pages to page groups. See some more features in the interactive grid and interactive report pages for organizing and summarizing data. Reorder columns. Use the “control break” and “count” features. See an issue using COUNT when a field might have null values (no data).
Views: 476 Jennifer Kreie
Oracle SQL Tutorial 13 - How to Add Column Constraints (Attributes)
 
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So far, we have this table declaration: CREATE TABLE users( user_id NUMBER, username VARCHAR(50 CHAR) first_name VARCHAR2(50 CHAR), last_name VARCHAR2(50 CHAR) ) We can run this command see that it works. As we are learning though, we are going to want to be able to recreate our table with different settings and such, but if you try to run this command, it will complain that the table already exists. So we first need to delete this table before we start editing settings. When we get more experienced, we will learn about ways to edit the structure of a table that already exists. To fix this, we can get rid of the table using the DROP TABLE command: DROP TABLE users You can run this every time if you need to practice by adding a semicolon after it. This is how you can tell Oracle that you are putting in another command after it. This is known as a delimiter. When you run the script, it is going to run both commands. Now we can go through and reconsider our table structure. This is fine for starting out because we don't have any important data in our database, but once your database is in production you are not going to want to just drop tables. In the last video we discussed different constraints that you can apply to columns in a database table, but how do you actually apply these when you are creating a table? The first way you define constraints is to put them right after the column in your CREATE TABLE statement. CREATE TABLE users( username VARCHAR2(50 CHAR) NOT NULL ) When we define constraints this way, we usually say we are adding column attributes. If you have two constraints you want to add, you just put one after the other with spaces in between. There is no particular order that is required. CREATE TABLE users( username VARCHAR2(50 CHAR) NOT NULL UNIQUE ) In this situation we have already given the column the NOT NULL and UNIQUE attributes, so we should consider making this a primary key: CREATE TABLE users( username VARCHAR2(50 CHAR) PRIMARY KEY ) As you can see, adding column attributes is super easy. We can add a default like this: CREATE TABLE users( username VARCHAR2(50 CHAR) PRIMARY KEY, account_balance NUMBER DEFAULT 0 ) Note that now we need the comma after the first row. There are a few constraints we did not talk go through an example, specifically foreign keys and check constraints. We will be adding these constraints to our database in future videos. In the mean time, I have a thought for you… Many people prefer to name their column constraints. That way, we can refer to certain constraints by name. For example, we might have a primary key constraint that could be named users_pk. The way we are creating these constraints does not allow for this feature, so in the next video we are going to be discussing different ways to create constraints. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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: 24886 Caleb Curry
Oracle tutorial : Pseudo columns in Oracle PL SQL (pseudo column)
 
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Oracle tutorial : Pseudo columns in Oracle PL SQL ( pseudocolumn ) oracle tutorial for beginners rownum in oracle This video will show you what is Pseudo columns in Oracle PL SQL. Pseudo columns are likes ROWNUM, ROENUM, ROWID, NEXTVAL,SYSDTAE , USER etc. pseudocolumn examples Oracle tutorial : Pseudo columns in oracle Oracle supports several special-purpose data elements that are not actually contained in a table, but are available for use in SQL statements. Here is a partial list of pseudo-columns in Oracle a)CURRVAL : When using Oracle SEQUENCE values, the pseudo-column CURRVAL returns the current value of the sequence. for example: schema.sequence_name.CURRVAL b)NEXTVAL :When using Oracle SEQUENCE values, the pseudo-column NEXTVAL returns the next value of the sequence and causes the sequence to increment by one. for example: schema.sequence_name.NEXTVAL c)ROWNUM:ROWNUM returns a number indicating the order in which a row was selected from a table. d)ROWID: ROWID returns the rowid (binary address) of a row in a database table. e)USER :This pseudo-column will always contain the Oracle username under which you are connected to the database. f)SYSDATE:This pseudo-column will contain the current date and time. This column is a standard Oracle DATE datatype. The value represents the current time on the server not the client. For more tutorial please visit #techquerypond https://techquerypond.com https://techquerypond.wordpress.com https://twitter.com/techquerypond
Views: 1607 Tech Query Pond
10 of 15 SQL Basics with Oracle - Sort, Combine columns, Column Aliases
 
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This video shows how to sort data from an SQL query, how to use column aliases in place of actual column names, how to combine 2 or more columns into a single output column and how to create a dynamic column and use a formula to generate data for tha dynamic column. (10 of 15) There is also an "Advanced SQL" series. (Search for "databasemec" for tutorials using SQL Server.)
Views: 3216 Jennifer Kreie
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: 32235 techsapphire
Multiple Indexes on the Same Set of Columns
 
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This video demonstrates how you can use invisible indexes to allow multiple indexes on the same set of columns. Multiple indexes on the same column set is a new feature in Oracle 12c. For more information see: https://oracle-base.com/articles/12c/multiple-indexes-on-same-set-of-columns-12cr1 Website: https://oracle-base.com Blog: https://oracle-base.com/blog Twitter: https://twitter.com/oraclebase Cameo by Scott Spendolini Blog: http://spendolini.blogspot.co.uk/ Twitter: https://twitter.com/sspendol Website: http://www.sumnertech.com/ Cameo appearances are for fun, not an endorsement of the content of this video.
Views: 1435 ORACLE-BASE.com
Does The Order Of Index Columns Matter?
 
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Have you ever wanted to create an index to improve SQL query performance but were unsure of what columns to include or what order to put them in? This video will explain everything you need to know to understand how SQL row store indexes work. Subscribe and turn on notifications to never miss a weekly video: https://www.youtube.com/c/bertwagner?sub_confirmation=1 Related blog post with examples and graphics: https://bertwagner.com/2018/09/04/does-the-order-of-index-columns-matter/ Follow me on Twitter: https://twitter.com/bertwagner
Views: 568 Bert Wagner
Oracle Pseudo Column, Virtual Column , Invisible Column and Unused Column
 
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More Details at, Pseudo Column @ https://www.youtube.com/edit?o=U&video_id=GIGmZwShGh4 Virtual Column @ https://www.youtube.com/edit?o=U&video_id=qUALFDzLDJw Invisible Column @ https://www.youtube.com/edit?o=U&video_id=nz48CdgDCt4 Unused Column @ https://www.youtube.com/edit?o=U&video_id=GWo4VcNZo6Y
Views: 320 Siva Academy
GROUP BY with Multiple Columns (Introduction to Oracle SQL)
 
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Learn how to group with multiple columns using GROUP BY in SQL. The full Introduction to Oracle SQL course is available here: https://www.databasestar.com/introduction-to-oracle-sql-course/
Views: 2803 Database Star
Subscriber Comments Reply Video 10 Modifying the order of column without dropping the table
 
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Subscriber Comments Reply Video 10 Modifying the order of column without dropping the table Link for "Oracle Invisible Column" https://youtu.be/nz48CdgDCt4 Link for "Oracle Pseudo Column, Virtual Column , Invisible Column and Unused Column" https://youtu.be/HgVD8oHhGh0 Click here to subscribe to my youtube channel http://www.youtube.com/channel/UCBt6VrxAIb5jLh9HLDcdwtQ?sub_confirmation=1 Oracle Interview questions and Answers at https://www.youtube.com/playlist?list=PLb1qVSx1k1Vr0v4wVyvT3GEuA0J0M4xBm Oracle 18C New features at https://www.youtube.com/playlist?list=PLb1qVSx1k1Vqe06V1tIBcvnslMPWX69bW Oracle 12C New features at https://www.youtube.com/playlist?list=PLb1qVSx1k1VqM1u2IHWzZIgziqejl6wx- Oracle PLSQL records and collections at https://www.youtube.com/playlist?list=PLb1qVSx1k1VpAFTXopXvAh_D3PLcTntdm
Views: 317 Siva Academy
SQL with Oracle 10g XE - Using ALTER TABLE to Modify Table Columns
 
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In this video I use the ALTER TABLE command to modify an existing field column. The command will allow you to change the data types, whether the field can be null, or even the primary key. When using the ALTER TABLE command you would use the keyword MODIFY to make changes to an existing column. Be careful when changing a data type of the null field as existing data may cause an error if not in compliance with the new change. The code I used to alter the Books table is : ALTER TABLE BOOKS MODIFY ISBN_10 VARCHAR(13); 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: 16417 Lecture Snippets
Column Alias in Oracle
 
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Column Alias in Oracle(How to rename the column header in SQL)
Oracle SQL TUTORIAL – Date columns with Time in Where condition
 
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In this video, we will see how to retrieve records for a specific time duration. SQLs used in this video are given below. select * from employees; alter session set nls_date_format = 'DD-MON-YYYY HH24:MI:SS'; SELECT DBMS_RANDOM.VALUE(0,9) FROM DUAL; SELECT SYSDATE-DBMS_RANDOM.VALUE(0,9) FROM DUAL; SELECT FIRST_NAME,LAST_NAME, SYSDATE-DBMS_RANDOM.VALUE(0,9) CREATED_DATE FROM EMPLOYEES; CREATE TABLE EMP_TEST AS SELECT FIRST_NAME,LAST_NAME, SYSDATE-DBMS_RANDOM.VALUE(0,9) CREATED_DATE FROM EMPLOYEES; SELECT * FROM EMP_TEST ORDER BY CREATED_DATE DESC; select sysdate from dual; select sysdate,trunc(sysdate) from dual; 26 sep 2018 00:00:00 to 26 sep 2018 23:59:59 select sysdate,trunc(sysdate),trunc(sysdate)+0.99999 from dual; Records that got created yesterday.. 25 sep 2018 00:00:00 to 25 sep 2018 23:59:59 select trunc(sysdate-1),trunc(sysdate-1)+0.99999 from dual; SELECT * FROM emp_test WHERE created_date BETWEEN trunc(SYSDATE-1) AND trunc(SYSDATE-1)+0.99999 order by created_date; Retrieve records for 22nd Septembter 2018 SELECT * FROM emp_test WHERE created_date BETWEEN to_date('22-sep-2018 00:00:00','dd-mon-yyyy hh24:mi:ss') AND to_date('22-sep-2018 23:59:59','dd-mon-yyyy hh24:mi:ss') order by created_date; SELECT * FROM emp_test WHERE created_date BETWEEN to_date('22-sep-2018','dd-mon-yyyy') AND to_date('22-sep-2018 23:59:59','dd-mon-yyyy hh24:mi:ss') order by created_date; -- Get all records created in last 24 hours select sysdate,sysdate-1 from dual; SELECT * FROM emp_test where created_date between sysdate-1 and sysdate order by created_date;
Views: 223 Ganesh Anbarasu
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: 303 Oracle SQL
ROWID VS ROWNUM IN ORACLE
 
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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: 4235 Tech Coach
14. Pseudo Columns
 
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In this video you will learn about Pseudo columns used in Oracle engine. This is one of confusing topic for beginners, if you are one you should quickly watch it. You will remember it always after watching. For Support =========== Email: [email protected] Contact Form: http://www.learninhindi.com/home/contact Our Social Media ================ Facebook: https://www.facebook.com/LearnInHindi Twitter: https://twitter.com/LearnInHindi For Training & Videos ===================== For more videos and articles visit: http://www.learninhindi.com Free Java Programming In Hindi Course ===================================== https://www.youtube.com/playlist?list=PLOZ3jentlCDAwwhMyoLISrxkXTADGp7PH Free Oracle PL/SQL Programming In Hindi Course ============================================== https://www.youtube.com/playlist?list=PLB5DA82419C2D99B6 Free C Programming In Hindi Course ================================== https://www.youtube.com/playlist?list=PLOZ3jentlCDAxKpBLMWogxSdy6BZcsAJq Trips & Tricks Channel ====================== https://www.youtube.com/channel/UCGmLfkuCo-3lHHJXRJ9HUMw Programming in Hindi Channel ============================ https://www.youtube.com/channel/UCudElIDgwNrybeAvXIy1HZQ
Views: 41757 ITORIAN
55. ALTER TABLE to Modify existing column in PL/SQL Oracle
 
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In this video you will learn about ALTER TABLE to Modify existing column in PL/SQL Oracle. For Support =========== Email: [email protected] Contact Form: http://www.learninhindi.com/home/contact Our Social Media ================ Facebook: https://www.facebook.com/LearnInHindi Twitter: https://twitter.com/LearnInHindi For Training & Videos ===================== For more videos and articles visit: http://www.learninhindi.com Free Java Programming In Hindi Course ===================================== https://www.youtube.com/playlist?list=PLOZ3jentlCDAwwhMyoLISrxkXTADGp7PH Free Oracle PL/SQL Programming In Hindi Course ============================================== https://www.youtube.com/playlist?list=PLB5DA82419C2D99B6 Free C Programming In Hindi Course ================================== https://www.youtube.com/playlist?list=PLOZ3jentlCDAxKpBLMWogxSdy6BZcsAJq Trips & Tricks Channel ====================== https://www.youtube.com/channel/UCGmLfkuCo-3lHHJXRJ9HUMw Programming in Hindi Channel ============================ https://www.youtube.com/channel/UCudElIDgwNrybeAvXIy1HZQ
Views: 4783 ITORIAN
17. INSERT INTO with Changing order of column in SQL (Hindi)
 
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Please Subscribe Channel Like, Share and Comment Visit : www.geekyshows.com
Views: 19121 Geeky Shows
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: 189701 Manish Sharma
07 05 Demo   Index Column Order
 
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ORACLE
Views: 61 oracle ocm
Oracle Sql :  Lecture 40: GROUP BY with multiple columns
 
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Oracle Sql: GROUP BY with multiple columns https://www.youtube.com/channel/UCnBpiBIOtRgMsk4G7Ri1jbQ
Views: 2197 Oracle SQL
MSSQL - How to change column order in table in few seconds
 
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More Info: http://howtodomssqlcsharpexcelaccess.blogspot.ca/2017/10/mssql-change-column-order-in-table.html
Views: 714 Vis Dotnet
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: 102624 Manish Sharma
Lesson 10 - Query Aliases and ORDER BY (Oracle SQL Certification)
 
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Access all of my courses using the below discount: https://www.jobreadyprogrammer.com/p/all-access-pass/?product_id=1065350&coupon_code=60_PERCENT_DISCOUNT&preview=logged_out #Oracle #Java #Data analysis Get ready to acquire some seriously marketable programming skills! You can't consider yourself a complete end to end developer until you can code in SQL. Today, data has become the hottest topic in technology and a company's biggest asset is their data. All databases require the language SQL to store and retrieve data. Salaries for junior level SQL Developers are upwards of $70,000 - $90,000 dollars a year! The great thing is, for this course, you do not need any prior experience in programming what so ever. SQL is a different animal and we're going to demystify the language from scratch and prepare you with plenty of progressively challenging assignments so that by the time you've completed the course (in 2 months), you can call your self an Oracle SQL Master! Oracle is the most popular relational database in the world! This course will prepare you to be job-ready in just 1 month of study and practice. All exercises and solutions are in the lectures. In several lectures I ask students to pause the video and complete the assignment before resuming to watch my solution. MAKE SURE YOU WORK OUT THE PROBLEMS ON YOUR OWN BEFORE MOVING ON TO MY SOLUTION!! Who this course is for: Anyone willing to get into the software development career Anyone willing to Master SQL and get a job as a well paid Oracle SQL Developer Anyone willing to work hard in mastering the SQL language Anyone who is interested in passing the Oracle 1Z0-071 exam!
Views: 4082 Imtiaz Ahmad
Sorting in Descending Order in SQL Using Order By Desc Clause - SQL LESSON 29
 
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Sorting in Descending Order in SQL Using Order By Desc Clause - SQL LESSON 29
Views: 17551 HandsonERP
Oracle 12C New Feature - Multi Column List Partitioning
 
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Oracle 12C New Feature - Multi Column List Partitioning
Views: 234 Siva Academy
Finding Database Columns By Name in Oracle SQL Developer
 
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How to find all columns in your Oracle Database by searching on the name.
Views: 7398 Jeff Smith
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: 208814 kudvenkat
APEX12 of 30: SQL code to concatenate display columns in a dynamic LOV.  APEX does LOV SQL code
 
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APEX 18.1 video 12 of 30: Look at the data model (data dictionary) using SQL Developer and data then decide what additional static and dynamic LOVs are used. Create the LOVs. See how APEX writes the SQL code when you use the “dynamic list of values” interface. See how to combine more than one column in the LOV’s display column. Combining two or more columns is called concatenating a display column. select lname || ', ' || fname || ': ' || pers_ID as display, pers_id as return from persons order by 1; select lname || ', ' || fname || ': ' || persons.pers_ID as display, persons.pers_id as return from persons inner join employees on persons.pers_id = employees.pers_id order by 1; select city || ', ' || state || ' ' || zip as display, zip_id as return from zips order by 1; select name || ', ' || dom_breed || ': ' || animal_id as display, animal_id as return from animals inner join dom_breed_lookup on animals.dom_breed_id = dom_breed_lookup.dom_breed_id order by name;
Views: 936 Jennifer Kreie
Difference between rows and range
 
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range vs rows in sql server difference between rows clause and range clause in sql server range clause vs rows clause in sql server sql server running total query running total example in sql server In this video we will discuss the difference between rows and range in SQL Server. This is continuation to Part 116. Please watch Part 116 from SQL Server tutorial before proceeding. Let us understand the difference with an example. We will use the following Employees table in this demo. SQL Script to create the Employees table Create Table Employees ( Id int primary key, Name nvarchar(50), Salary int ) Go Insert Into Employees Values (1, 'Mark', 1000) Insert Into Employees Values (2, 'John', 2000) Insert Into Employees Values (3, 'Pam', 3000) Insert Into Employees Values (4, 'Sara', 4000) Insert Into Employees Values (5, 'Todd', 5000) Go Calculate the running total of Salary and display it against every employee row The following query calculates the running total. We have not specified an explicit value for ROWS or RANGE clause. SELECT Name, Salary, SUM(Salary) OVER(ORDER BY Salary) AS RunningTotal FROM Employees So the above query is using the default value which is RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW This means the above query can be re-written using an explicit value for ROWS or RANGE clause as shown below. SELECT Name, Salary, SUM(Salary) OVER(ORDER BY Salary RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS RunningTotal FROM Employees We can also achieve the same result, by replacing RANGE with ROWS SELECT Name, Salary, SUM(Salary) OVER(ORDER BY Salary ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS RunningTotal FROM Employees What is the difference between ROWS and RANGE To understand the difference we need some duplicate values for the Salary column in the Employees table. Execute the following UPDATE script to introduce duplicate values in the Salary column Update Employees set Salary = 1000 where Id = 2 Update Employees set Salary = 3000 where Id = 4 Go Now execute the following query. Notice that we get the running total as expected. SELECT Name, Salary, SUM(Salary) OVER(ORDER BY Salary ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS RunningTotal FROM Employees The following query uses RANGE instead of ROWS SELECT Name, Salary, SUM(Salary) OVER(ORDER BY Salary RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS RunningTotal FROM Employees Notice we don't get the running total as expected. So, the main difference between ROWS and RANGE is in the way duplicate rows are treated. ROWS treat duplicates as distinct values, where as RANGE treats them as a single entity. All together side by side. The following query shows how running total changes 1. When no value is specified for ROWS or RANGE clause 2. When RANGE clause is used explicitly with it's default value 3. When ROWS clause is used instead of RANGE clause SELECT Name, Salary, SUM(Salary) OVER(ORDER BY Salary) AS [Default], SUM(Salary) OVER(ORDER BY Salary RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS [Range], SUM(Salary) OVER(ORDER BY Salary ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS [Rows] FROM Employees Text version of the video http://csharp-video-tutorials.blogspot.com/2015/10/difference-between-rows-and-range.html Slides http://csharp-video-tutorials.blogspot.com/2015/10/difference-between-rows-and-range_8.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
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Tutorial#34 How to find the length of column in Oracle SQL | Length Function
 
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How to find the length of a string/column in Oracle SQL , this course for Oracle SQL beginner or Length Function is used to determine the Length of string OR This function is used to calculate the length of a string or column in query or How to use Length function in Oracle SQL or How to get the length of a string in SQL or The Oracle LENGTH function allows you to find the length of a string, also known as the number of characters in a string. Assignment link: https://drive.google.com/open?id=1b-pcf28jyVvm9GN9pn5I6HYtYiSd_Bj2 In this series we cover the following topics: SQL basics, create table oracle, SQL functions, SQL queries, SQL server, SQL developer installation, Oracle database installation, SQL Statement, OCA, Data Types, Types of data types, SQL Logical Operator, SQL Function,Join- Inner Join, Outer join, right outer join, left outer join, full outer join, self-join, cross join, View, Sub-query, Set Operator. 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
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Oracle Column Alias Name
 
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COLUMN ALIASES are used to make column headings in your result set easier to read. TABLE ALIASES are used to shorten your SQL to make it easier to read or when you are performing a self join (ie: listing the same table more than once in the FROM clause). oracle sql column alias in where clause oracle alias column name with space oracle sql alias subquery oracle column synonym oracle alias select statement oracle join alias alias in oracle sql developer oracle database alias 26. Table Alias in Oracle In this video you will learn about Table Alias in Oracle. I will show you a simple query without table alias and then use a table alias ... SQL Tutorial in Oracle - 5 Column Alias with Order By SQL aliases are used to give a database table, or a column in a table, a temporary name. 7:30 Alias Names In Oracle | Oracle Tutorials for Beginners Oracle PL/SQL World • 92 views 1 month ago Alias Names In Oracle | Oracle Tutorials for Beginners Column Level Alias Names in Oracle Table Level Alias names in Oracle ... 3:01 25. Column Alias in Oracle ITORIAN • 17K views 4 years ago In this video you will learn about Column Alias used in Oracle. I will show you a simple query without column alias and then use a ... 7:24 53. Alias in SQL (Hindi) 8.4K views 1 year ago Please Subscribe Channel Like, Share and Comment Visit : ALIASES in Oracle • 3:07 What are Table Aliases? (Introduction to Oracle SQL) Database Star • 29 views 3 months ago Learn what table aliases are and how to use them. 1:44 PL/SQL Tutorial 3 (Oracle): Using an Alias • 141 views 1 year ago PL/SQL Tutorial 3 (Oracle): Using an Alias In this tutorial I show you how to use an Alias in PL/SQL. Source Code: ... Learn Oracle SQL : Table and Column Aliases Oracle SQL • /oracle-sql-course | Get the complete course today. Learn Oracle SQL : Table And Column Aliases : In this video I ... SQL Tutorial - 28: Aliasing Through AS Clause •In this tutorial we'll see how we can change the display names of fields in result sets. Oracle Database tutorials 1: How to install Oracle Database 11g on windows 7 • 1.2M views 4 years ago How To install Oracle Database 11g enterprise edition On windows 7 64 bit. Full installation in Single video. Enjoy SQL and ... Related 1. What is Database In this video you will learn the very basics of Database. I will try to address it from every best possible way that will make you ... Related SQL Aggregation queries using Group By, Sum, Count and Having From SQL Queries Joes 2 Pros (Vol2) ch4.1. Learn up to write aggregated queries. Column Alias in Oracle Oracle Column Alias in Oracle(How to rename the column header in SQL)
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Oracle Database Security - PL/SQL and SQL Injection Lesson 4 - Demo, First Order Attack
 
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A demonstration of how a poorly written Oracle web application is hacked through poorly written PL/SQL! See all lessons - FREE - at https://www.skillbuilders.com/plsql-sql-injection. See examples of dbms_xdb_config.sethttpport (http listening) and dbms_epg.create_dad (enable access thru http).
Views: 584 SkillBuilders
Part 5   SQL query to find employees hired in last n months
 
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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-5-sql-query-to-find-employees.html This question is asked is many sql server interviews. If you have used DATEDIFF() sql server function then you already know the answer. -- Replace N with number of months Select * FROM Employees Where DATEDIFF(MONTH, HireDate, GETDATE()) Between 1 and N
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SQL with Oracle 10g XE - Creating Calculated Columns with SELECT
 
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In this video I create a calculated field based off the data from an existing column. When creating a calculated column you can use addition, subtraction, multiplication, and division. In the video I increased a column by 10 percent, decreased it by 15 percent and divided it in half. The results are not stored in the table, but are created on-the-fly. If you need parenthesis you can use them to change the order of operations in your math calculation. 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.
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60. ALTER TABLE for Adding Column by Position with constraints in SQL (Hindi)
 
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Please Subscribe Channel Like, Share and Comment Visit : www.geekyshows.com
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Oracle Sql: Lecture 31: ORDER BY clause how to sorting Data
 
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how to sorting Data https://www.youtube.com/channel/UCnBpiBIOtRgMsk4G7Ri1jbQ
Views: 573 Oracle SQL
How to column add and delete in Oracle SQL
 
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How to column add and delete in Oracle SQL
Part 4   Delete duplicate rows in sql
 
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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-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
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MERGING DATA IN MULTIPLE COLUMNS INTO SINGLE COLUMN IN ORACLE
 
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LET US CONSIDER THAT I HAVE DATA IN 2 OR 3 COLUMNS AND I WANT TO MERGE THE DATA INTO SINGLE "COLUMN"..THIS VIDEO TEACHES CLEARLY HOW WE CAN DO THAT IN "ORACLE"..
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Part 1   How to find nth highest salary in sql
 
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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-1-how-to-find-nth-highest-salary_17.html This is a very common SQL Server Interview Question. There are several ways of finding the nth highest salary. By the end of this video, we will be able to answer all the following questions as well. How to find nth highest salary in SQL Server using a Sub-Query How to find nth highest salary in SQL Server using a CTE How to find the 2nd, 3rd or 15th highest salary Let's use the following Employees table for this demo Use the following script to create Employees table Create table Employees ( ID int primary key identity, FirstName nvarchar(50), LastName nvarchar(50), Gender nvarchar(50), Salary int ) GO Insert into Employees values ('Ben', 'Hoskins', 'Male', 70000) Insert into Employees values ('Mark', 'Hastings', 'Male', 60000) Insert into Employees values ('Steve', 'Pound', 'Male', 45000) Insert into Employees values ('Ben', 'Hoskins', 'Male', 70000) Insert into Employees values ('Philip', 'Hastings', 'Male', 45000) Insert into Employees values ('Mary', 'Lambeth', 'Female', 30000) Insert into Employees values ('Valarie', 'Vikings', 'Female', 35000) Insert into Employees values ('John', 'Stanmore', 'Male', 80000) GO To find the highest salary it is straight forward. We can simply use the Max() function as shown below. Select Max(Salary) from Employees To get the second highest salary use a sub query along with Max() function as shown below. Select Max(Salary) from Employees where Salary [ (Select Max(Salary) from Employees) To find nth highest salary using Sub-Query SELECT TOP 1 SALARY FROM ( SELECT DISTINCT TOP N SALARY FROM EMPLOYEES ORDER BY SALARY DESC ) RESULT ORDER BY SALARY To find nth highest salary using CTE WITH RESULT AS ( SELECT SALARY, DENSE_RANK() OVER (ORDER BY SALARY DESC) AS DENSERANK FROM EMPLOYEES ) SELECT TOP 1 SALARY FROM RESULT WHERE DENSERANK = N To find 2nd highest salary we can use any of the above queries. Simple replace N with 2. Similarly, to find 3rd highest salary, simple replace N with 3. Please Note: On many of the websites, you may have seen that, the following query can be used to get the nth highest salary. The below query will only work if there are no duplicates. WITH RESULT AS ( SELECT SALARY, ROW_NUMBER() OVER (ORDER BY SALARY DESC) AS ROWNUMBER FROM EMPLOYEES ) SELECT SALARY FROM RESULT WHERE ROWNUMBER = 3
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