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SEQUENCES IN ORACLE SQL WITH EXAMPLES (asc, desc, cycle, nocycle, cache, nocache)
 
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This video tutorial is to understand the working of sequences in oracle SQL. The video demonstrations explain all the attributes of a create sequence statement such as start with, increment by, maxvalue, nomaxvalue, minvalue, nominvalue, cycle, nocycle, cache, nocache, order, and noorder. All the parameters are explained with appropriate examples so that the user can understand them clearly. For more detail refer to the link: http://plsqlnsql.blogspot.com/2017/01/sequences.html
Views: 2079 Kishan Mashru
DESCRIBE or DESC Keyword in Oracle | Oracle Tutorials for Beginners
 
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DESCRIBE or DESC Keyword in Oracle | Oracle Tutorials for Beginners DESCRIBE Keyword in Oracle DESC Keyword in Oracle DESCRIBE Keyword in Oracle SQL DESC Keyword in Oracle SQL DESCRIBE Keyword in SQL DESC Keyword in SQL Oracle Tutorials for Beginners Oracle SQL for Beginners Oracle Database for Beginners Oracle SQL Tutorials for Biners Oracle Database tutorials for Beginners oracle describe table structure desc table in sql server descending order in oracle how to see table structure in oracle sql developer desc command in mysql pl sql describe table desc command in sql example describe table in sql query how to see table structure in oracle sql developer desc table in sql server sql query to view table structure in oracle oracle describe table invalid sql statement describe table in sql query oracle desc table order by column name describe not working in oracle oracle show tables how to see table structure in oracle sql developer how to get table structure in oracle 11g sql query to list all tables in a database describe table in oracle sql developer sql query to view table structure in sql server oracle get list of tables in schema oracle show tables describe table structure in sql server
Views: 491 Oracle PL/SQL World
032-Oracle SQL Arabic Course  - Sequence اوراكل ديفلوبر
 
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Oracle SEQUENCES - Beginner .......................................­.................... تواصل معانا علي الفيس بوك من هنا : https://www.facebook.com/askgad .......................................­.................... تواصل معانا علي موقعنا من هنا : https://www.askgad.com/
Views: 1423 Ask Gad
Oracle DB - Sequence
 
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Oracle DB - Sequence Watch More Videos at: https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Parth Panjabi, Tutorials Point India Private Limited
075-Oracle SQL 12c: Sequences practice 1
 
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تعلم اوراكل حتى الاحتراف تعلم اوراكل من الصفر EXAM 1Z0-061 EXAM 1Z0-071
Views: 1219 khaled alkhudari
ORDER BY CLAUSE FOR EXPERT IN ORACLE SQL WITH EXAMPLE
 
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This is a free video tutorial on writing order by clause in an oracle sql statement. This video tutorial demonstrated how we can use column name, column number, expression, function, null first, null last, asc and desc in an order by clause. Also the video tutorial explains the possible cause and the solution to ora-01791: not a selected expression oracle error
Views: 602 Kishan Mashru
Oracle - SQL - Creating Sequences
 
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Oracle - SQL - Creating Sequences Watch more Videos at https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Anadi Sharma, Tutorials Point India Private Limited.
Oracle || Synonyms by  Siva
 
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DURGASOFT is INDIA's No.1 Software Training Center offers online training on various technologies like JAVA, .NET , ANDROID,HADOOP,TESTING TOOLS , ADF, INFORMATICA,TABLEAU,IPHONE,OBIEE,ANJULAR JS, SAP... courses from Hyderabad & Bangalore -India with Real Time Experts. Mail us your requirements to [email protected] so that our Supporting Team will arrange Demo Sessions. Ph:Call +91-8885252627,+91-7207212428,+91-7207212427,+91-8096969696. http://durgasoft.com http://durgasoftonlinetraining.com https://www.facebook.com/durgasoftware http://durgajobs.com https://www.facebook.com/durgajobsinfo............
Sql Tutorial - How to create SEQUENCE in Oracle
 
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Hi guys today we understanding about sequence in SQL language how to create and modify sequence and how these are beneficial to speedup the process of insertion.Oracle database #SqlTutorial Unbeatable,Unbreakable Platform..
Views: 4899 Oracle World
Creating SQL table and sorting accordance to ascending & descending using ORACLE 10g. hd
 
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How to create a table and sorting it according to ascending & descending order. Program used is ORACLE® 10g. 🏁Watch in 720p or 480p for better view. ➡MrSuicideSheep-https://www.youtube.com/channel/UC5nc_ZtjKW1htCVZVRxlQAQ http://facebook.com/synchronicemusic http://soundcloud.com/synchronice ➡NCS-https://www.youtube.com/channel/UC_aEa8K-EOJ3D6gOs7HcyNg ➡ Unknown Brain- http://soundcloud.com/UnknownBrain ➡Chris Linton-http://soundcloud.com/chris-linton-1 ➡MrRevillz - https://www.youtube.com/channel/UCd3TI79UTgYvVEq5lTnJ4uQ https://soundcloud.com/mrrevillz ➡MAX - https://www.youtube.com/user/MaxSchneider1 https://itunes.apple.com/us/album/the-say-max-ep/id863989577 http://open.spotify.com/artist/1bqxdqvUtPWZri43cKHac8
Views: 275 Ankur Debbarma
TUTORIAL MEMBUAT PHYSICAL DATABASE DARI ORACLE SQL DEVELOPER
 
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Tutorial kasar : -sqlplus oa/oa -connect as sysdba; -create user paijo identified by paijo; -grant all privilege to paijo; -connect paijo/paijo -show user //lalu buat file di oracle home dengan nama paijo.sql dengan isi: ========================================= DROP TABLE "DOKTERS"; DROP TABLE "PASIENS"; DROP TABLE "DIAGNOSAS"; CREATE TABLE DOKTERS ("ID_DTR" VARCHAR (7), "NAMA" VARCHAR (25) NOT NULL, "ALAMAT" VARCHAR (30) NOT NULL, CONSTRAINT "ID_DTR_PK" PRIMARY KEY ("ID_DTR") USING INDEX ENABLE); CREATE TABLE PASIENS ("ID_PSN" VARCHAR (9), "NAMA" VARCHAR (25) NOT NULL, "ALAMAT" VARCHAR (30), CONSTRAINT "ID_PSN_PK" PRIMARY KEY ("ID_PSN") USING INDEX ENABLE); CREATE TABLE DIAGNOSAS ("TANGGAL" DATE, "HASIL" VARCHAR (30) NOT NULL, "ID_DTR" VARCHAR (7), "ID_PSN" VARCHAR (9), CONSTRAINT "TGL_PK" PRIMARY KEY ("TANGGAL", "ID_DTR", "ID_PSN") USING INDEX ENABLE); ====================================== [email protected] -desc dokters; -desc pasiens; -desc diagnosas; //lalu buat file di oracle home dengan nama alter_paijo.sql dengan isi: ===================================== ALTER TABLE DIAGNOSAS ADD CONSTRAINT "DIA_ID_DTR" FOREIGN KEY ("ID_DTR") REFERENCES DOKTERS ("ID_DTR"); ALTER TABLE DIAGNOSAS ADD CONSTRAINT "DIA_ID_PSN" FOREIGN KEY ("ID_PSN") REFERENCES PASIENS ("ID_PSN"); =================================== [email protected]_paijo.sql //lalu buat file di oracle home dengan nama isi_paijo.sql dengan isi: =================================== INSERT INTO DOKTERS VALUES('D100799','PAIJO','JALAN IN AJA'); INSERT INTO DOKTERS VALUES('D120498','PAINO','JALAN JALAN'); INSERT INTO DOKTERS VALUES('D071297','PAIWO','JALAN YANG BENAR'); INSERT INTO PASIENS VALUES('PSN130193','JARWO','JALAN LURUS'); INSERT INTO PASIENS VALUES('PSN040494','JARVIS','JALAN GRAK'); INSERT INTO PASIENS VALUES('PSN121212','JARAN','JALAN BERBELOK'); INSERT INTO DIAGNOSAS VALUES(TO_DATE('18-12-18','DD-MM-YY'),'PARU KERING','D100799','PSN130193'); INSERT INTO DIAGNOSAS VALUES(TO_DATE('19-12-18','DD-MM -YY'),'KAGETAN','D120498','PSN040494'); INSERT INTO DIAGNOSAS VALUES(TO_DATE('20-12-18','DD-MM-YY'),'GATEL','D071297','PSN121212'); ================================ [email protected]_paijo.sql -select * from dokters; -select * from pasiens; -select * from diagnosas; //lalu buat file di oracle home dengan nama select_paijo.sql dengan isi: ============================== SELECT DOKTERS.ID_DTR, DOKTERS.NAMA, PASIENS.ID_PSN, PASIENS.NAMA, DIAGNOSAS.TANGGAL, DIAGNOSAS.HASIL FROM DOKTERS, PASIENS, DIAGNOSAS WHERE DOKTERS.ID_DTR = DIAGNOSAS.ID_DTR AND PASIENS.ID_PSN= DIAGNOSAS.ID_PSN =========================== [email protected]_paijo.sql
Creating a sequence in Oracle SQL
 
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This video shows how to Create a sequence in Oracle SQL . Try to share these videos for poor students and subscribe this channel for more upcoming other technical videos.
Views: 179 Technology mart
Oracle sequence
 
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sequences in oracle
Views: 48 charan sai maraka
Oracle tutorial : How to create Id with AUTO INCREMENT in Oracle PL SQL
 
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Oracle tutorial: How to create Id with AUTO INCREMENT in Oracle oracle tutorial for beginners sequence in oracle identity key in sql In this Oracle tutorial , we can create an auto increment field using ‘sequence’ object that can be assigned as primary keys. Using Oracle ‘sequence’ object, you can generate new values for a column. An Oracle sequence is an object like a table or a stored procedure. Examples CREATE SEQUENCE SYSTEM.MYSEQ START WITH 1 MAXVALUE 999999999999999999999999999 MINVALUE 1 NOCYCLE CACHE 20 NOORDER; CREATE OR REPLACE TRIGGER TR_CITY BEFORE INSERT ON CITY FOR EACH ROW BEGIN SELECT LPAD(LTRIM(RTRIM(TO_CHAR(myseq.NEXTVAL))),10,'0') INTO :NEW.id FROM DUAL; END; / Subscribe on youtube: https://www.youtube.com/channel/UCpiyAesWNYOXSz5GPq8lbkA For more tutorial please visit #techquerypond https://techquerypond.wordpress.com https://twitter.com/techquerypond identity column
Views: 9336 Tech Query Pond
part 2 create sequence minvalue
 
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sequence, minvalue, increment, oracle 10g
Oracle DB 12c - Indexes Enhancements
 
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Oracle DB 12c - Indexes Enhancements Watch more videos at https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Parth Panjabi, Tutorials Point India Private Limited
Order by in SQL | Order by clause in Oracle | sorting in sql
 
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Order by in SQL | Order by clause in Oracle Use Order by in SQL to sort the results of a query by a given column or columns. facebook page www.facebook.com/learningseveryday Blog www.ethtimes1.blogspot.com In this video of Order by in sql , we will see how to arrange output data of a query in ascending or descending order . The Order by in SQL is used in a SELECT statement to sort results either in ascending or descending order. Order by in sql, is sql's way of sorting in sql. You can sort output of a query using order by in sql. Usually data in tables of sql is unordered form. Tables in sql are treated as sets of mathematics. In set theory , members of sets can be represented in any order. Similarly records or rows in tables of sql can be in any form. But sometimes we may need output of a query in ascending or descending order. ORDER BY Syntax SELECT column1, column2, ... FROM table_name ORDER BY column1, column2, ... ASC|DESC; To arrange output of a query in sql, we have to use order by in sql. Order by in sql is very easy to use. In video we had explained this concept with examples. Suppose we write a query as : select ename, city from employee; This wil list data on the screen . But we can not predict order of data. Suppose we supply it as : select ename, city from employee order by ename; This will sort the output in ascending order of enames because of order by clause. If you do not mention order in order by clause in Oracle , it will sort query results in ascending order by default. How to use order by in sql : Select ename , city from employee order by ename; This will list name and city of all the employees from employee table in ascending order of enames. You can also arrange data in descending order by using keyword desc in the query. Select ename , city from employee order by ename desc; please watch video in full length to clear the idea of order by in sql. You can also perform two columns sorting in sql, using order by in sql. If the content of the video is interesting, please share this video and subscribe this channel. Example: SELECT * FROM Individual ORDER BY LastName DESC; -~-~~-~~~-~~-~- Please watch: "what is flow chart | symbols of flowchart explained in hindi" https://www.youtube.com/watch?v=k2I8gp1NGGU -~-~~-~~~-~~-~-
Views: 127 Learning Everyday
Oracle SQL Tutorial For Beginners | Oracle SQL Online Training - Session 1
 
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Course : Oracle SQL Online Training Mode of Training : Online Duration : 40 Hours Timings : Flexible Oracle SQL Online Training Demo Registration Link : http://svsoftsolutions.com/demo.aspx Introduction to SQL What is SQL? What Can SQL do? RDBMS SQL Syntax Database Tables SQL Statements Overview of Most Important SQL Commands SELECT UPDATE DELETE INSERT CREATE TABLE ALTER TABLE DROP TABLE CREATE INDEX DROP INDEX SQL SELECT Statement SELECT syntax Demo Database SELECT Column Example SELECT * Example SQL Distinct SELECT DISTINCT Statement SELECT DISTINCT Syntax SELECT DISTINCT Example SQL WHERE Clause WHERE Clause WHERE Clause Example Operators in the WHERE Clause SQL AND & OR Operators AND Operator Example OR Operator Example Combining AND & OR SQL ORDER BY ORDER BY Syntax ORDER BY Example ORDER BY DESC Example ORDER BY Several Column Examples SQL Insert Into INSERT INTO Syntax INSERT INTO Examples Insert Data into Specified Columns SQL UPDATE UPDATE Syntax UPDATE Example Watch out UPDATE statement. SQL DELETE DELETE Syntax DELETE Examples Delete All the Data SQL Aliases SQL Alias Syntax for Columns Alias Example for Table Columns Alias Example for Tables. SQL Joins Different SQL JOINs INNER JOIN LEFT OUTER JOIN RIGHT OUTER JOIN FULL OUTER JOIN SQL UNION UNION Syntax UNION Example UNION ALL Syntax UNION ALL Example SQL Insert Into Select INSERT INTO SELECT Syntax INSERT INTO SELECT Examples SQL Create Table CREATE TABLE Syntax CREATE TABLE Example SQL Constraints CREATE TABLE + CONSTRAINT Syntax NOT NULL Constraint UNIQUE Constraint UNIQUE Constraint on CREATE TABLE UNIQUE Constraint on ALTER TABLE To DROP a UNIQUE Constraint PRIMARY KEY Constraint PRIMARY KEY Constraint on CREATE TABLE PRIMARY KEY Constraint on ALTER TABLE To DROP a PRIMARY KEY Constraint FOREIGN KEY Constraint FOREIGN KEY Constraint on CREATE TABLE FOREIGN KEY Constraint on ALTER TABLE To DROP a FOREIGN KEY Constraint CHECK Constraint CHECK Constraint on CREATE TABLE CHECK Constraint on ALTER TABLE To DROP a CHECK Constraint DEFAULT Constraint on CREATE TABLE DEFAULT Constraint on ALTER TABLE To DROP a DEFAULT Constraint SQL Create Index CREATE INDEX Syntax CREATE UNIQUE INDEX Syntax CREATE INDEX Example SQL DROP Command The DROP INDEX Statement The DROP TABLE Statement The DROP DATABASE Statement The TRUNCATE TABLE Statement SQL ALTER Command The ALTER TABLE Statement ALTER TABLE Example Change Data Type Example DROP COLUMN Example SQL VIEWS CREATE VIEW Statement CREATE VIEW Syntax CREATE VIEW Examples CREATE OR REPLACE VIEW Syntax Dropping a View SQL NULL Values Working with NULL Values IS NULL IS NOT NULL SQL NULL Functions NVL COALESCE For more details visit our website : www.svsoftsolutions.com Or reach us @ USA : +1-845-915-8712 (Toll Free), India : +91-9642373173
Views: 1389 SV Soft Solutions
Oracle - SQL - Sorting Data
 
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Oracle - SQL - Sorting Data Watch more Videos at https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Anadi Sharma, Tutorials Point India Private Limited.
SQL tutorial 61: SEQUENCE in Oracle Database By Manish Sharma RebellionRider
 
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This tutorial is all about Sequence In Oracle Database. In this SQL Tutorial you will learn How to create a sequence How to populate a Primary key column (auto increment in Oracle) using Sequence How to drop a sequence ------------------------------------------------------------------------ ►►►LINKS◄◄◄ Blog : http://bit.ly/sql-sequence-in-oracle-database-rebellionrider-manish-sharma Previous Tutorial ► How To Insert Data into Table using SQL Developer http://youtu.be/YYQCSV6MzTk ► INSERT INTO Command http://youtu.be/uQXgqFtxI_k ► How to copy /Insert data into a table from another table http://youtu.be/m3Ep8tAMqok ------------------------------------------------------------------------- ►►►Help Me In Getting A Job◄◄◄ ►Help Me In Getting A Good Job By Connecting With Me on My LinkedIn and Endorsing My Skills. All My Contact Info is Down Below. You Can Also Refer Me To Your Company Thanks ------------------------------------------------------------------------- Copy Cloud referral link || Use this link to join copy cloud and get 20GB of free storage https://copy.com?r=kb4rc1 -------------------------------------------------------------------------- ►Make sure you SUBSCRIBE and be the 1st one to see my videos! -------------------------------------------------------------------------- Amazon Wishlist: http://bit.ly/wishlist-amazon ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ►►►Find me on Social Media◄◄◄ Follow What I am up to as it happens on https://twitter.com/rebellionrider https://www.facebook.com/imthebhardwaj http://instagram.com/rebellionrider https://plus.google.com/+Rebellionrider http://in.linkedin.com/in/mannbhardwaj/ http://rebellionrider.tumblr.com/ http://www.pinterest.com/rebellionrider/ You can also Email me at for E-mail address please check About section Please please LIKE and SHARE my videos it makes me happy. Thanks for liking, commenting, sharing and watching more of our videos This is Manish from RebellionRider.com ♥ I LOVE ALL MY VIEWERS AND SUBSCRIBERS
Views: 42496 Manish Sharma
Synonyms in Oracle PL SQL
 
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Synonyms in Oracle #techquerypond sql synonyms oracle synonym what is Synonyms in Oracle ? 1)A synonym is an alternative name tO objects. 2)Objects like tables, views, sequences, stored procedures. 3)Generally we use to granting or revoking the access. 4)It means that the synonym is a public synonym and is accessible to all users. 5)Please note user must first have the appropriate privileges to access synonym. To get more information watch the above video. For example: CREATE PUBLIC SYNONYM EMP FOR EMPLOYEE; SELECT * FROM EMP; DROP PUBLIC SYNONYM EMP; https://techquerypond.wordpress.com https://techquerypond.com https://twitter.com/techquerypond
Views: 1330 Tech Query Pond
Oracle - Managing Views, Sequences, Synonyms, and Index
 
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Oracle - Managing Views, Sequences, Synonyms, and Index
Views: 242 Si Ruy
Oracle | Sequence & Synonyms by Dinesh
 
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DURGASOFT is INDIA's No.1 Software Training Center offers online training on various technologies like JAVA, .NET , ANDROID,HADOOP,TESTING TOOLS , ADF, INFORMATICA,TABLEAU,IPHONE,OBIEE,ANJULAR JS, SAP... courses from Hyderabad & Bangalore -India with Real Time Experts. Mail us your requirements to [email protected] so that our Supporting Team will arrange Demo Sessions. Ph:Call +91-8885252627,+91-7207212428,+91-7207212427,+91-8096969696. http://durgasoft.com http://durgasoftonlinetraining.com https://www.facebook.com/durgasoftware http://durgajobs.com https://www.facebook.com/durgajobsinfo............
PL/SQL tutorial 52: How To Create Nested table as Database Object by Manish Sharma
 
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RebellionRider.com presents PL/SQL Tutorial on How To Create permanent Nested Table Type Collection based on primitive datatype in Oracle Database by Manish Sharma ------------------------------------------------------------------------ ►►►LINKS◄◄◄ Blog : http://bit.ly/nested-table Previous Tutorial ► Nested table in PL/SQL Block https://youtu.be/EUYyiFCzU0I ------------------------------------------------------------------------- ►Make sure you SUBSCRIBE and be the 1st one to see my videos! ------------------------------------------------------------------------- ►►►Find me on Social Media◄◄◄ Follow What I am up to as it happens on https://twitter.com/rebellionrider http://instagram.com/rebellionrider https://plus.google.com/+Rebellionrider http://in.linkedin.com/in/mannbhardwaj/ ___Facebook Official Page of Manish Sharma___ https://www.facebook.com/TheRebellionRider/ ___Facebook Official Page of RebellionRider.com___ https://www.facebook.com/RebellionRider.official/ You can also Email me at for E-mail address please check the About section Please please LIKE and SHARE my videos it makes me happy. Thanks for liking, commenting, sharing and watching more of our videos This is Manish from RebellionRider.com ♥ I LOVE ALL MY VIEWERS AND SUBSCRIBERS
Views: 20303 Manish Sharma
How to create a View in Oracle Database with SQL.
 
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This is a online training video o oracle tutorial on how to create a view in Oracle. How it is stored in database. Just not mentioned one thing that how to view the view. Just type desc view name.
Views: 5180 Subhroneel Ganguly
Tutorials#77 Oracle sequence  - How to create  sequence  in Oracle SQL Database
 
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Explaining How to create a sequence in Oracle SQL Database or what is a sequence in SQL or sequence in SQL Server or sequence in oracle database ----------------------------------------------------------- Practice question on Sequence : https://drive.google.com/open?id=1EcWrlRw-OF-b8lN789GBIpO-6Fh6q-Q_ ---------------------------------------------------------- A sequence is an object which is used to generate the auto number or number sequence automatically Assignment: Assignment link will be available soon: 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, SubQuery, 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 #equalConnectCoach #rakeshmalviya
Views: 45 EqualConnect Coach
8. Describe Table in SQL (Hindi)
 
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Please Subscribe Channel Like, Share and Comment Visit : www.geekyshows.com
Views: 43589 Geeky Shows
Unique and Non Unique Indexes in sql server   Part 37
 
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In this video we will learn about 1. What is a Unique Index 2. Difference between unique index and unique constraint Text version of the video http://csharp-video-tutorials.blogspot.com/2012/09/unique-and-non-unique-indexes-part-37.html Slides http://csharp-video-tutorials.blogspot.com/2013/09/part-37-unique-non-unique-indexes.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists
Views: 205340 kudvenkat
SQL Magic: Dynamic Pivot, Polymorphic Table Functions and More
 
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In October's session, Chris Saxon covered SQL magic, including the following highlights: - 0:50 - how to find table name for index (sub)partitons from *_ind_(sub)partitions - 2:00 - SQL Magic! the dynamic pivot update; converting rows & columns in a table via an update statement - 8:30 - Polymorphic table functions; the describe function & fetch_rows procedure; PTFs and the optimizer; examples on LiveSQL.oracle.com. AskTOM Office Hours offers free, monthly training and tips on how to make the most of Oracle Database, from Oracle product managers, developers and evangelists. Music by bensound.com https://asktom.oracle.com/ Oracle Developers portal: https://developer.oracle.com/ Sign up for an Oracle Cloud trial: https://cloud.oracle.com/en_US/tryit Music by bensound.com
Views: 312 Oracle Developers
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: 175445 Manish Sharma
Get Table Names with Column Names and Data Types in SQL Server - SQL Server Tutorial
 
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In this video ,we will generate the script that will return us all the table names with column names and data type of those columns. We often need this information. Let's say we are going to prepare mapping document for load the data from Source Database to Destination database. We can get the list of all tables with column names and data types from Source Database and Destination Database and then paste in Excel and map the required input columns to output columns for ETL Process. Blog link with scripts used in video http://sqlage.blogspot.com/2015/02/get-all-tables-with-column-names-and.html
Views: 46257 TechBrothersIT
SelectTec | Aula Nº 12 |Create Table Primary key - Oracle SQL Developer
 
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primary key syntax: create table nome_tabela (coluna1 tipo not null, coluna2 tipo, constraint nome_pk primary key (coluna1) );
Views: 3425 SelectTec
Oracle Sequences and Synonyms
 
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DURGASOFT is INDIA's No.1 Software Training Center offers online training on various technologies like JAVA, .NET , ANDROID,HADOOP,TESTING TOOLS , ADF, INFORMATICA, SAP... courses from Hyderabad & Bangalore -India with Real Time Experts. Mail us your requirements to [email protected] so that our Supporting Team will arrange Demo Sessions. Ph:Call +91-8885252627,+91-7207212428,+91-7207212427,+91-8096969696. http://durgasoft.com http://durgasoftonlinetraining.com https://www.facebook.com/durgasoftware http://durgajobs.com https://www.facebook.com/durgajobsinfo......
sql tutorial | create sequence in oracle in HINDI | Sequences in Oracle in HINDI
 
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sql tutorial | create sequence in oracle | Sequences in Oracle in HINDI To create sequence in oracle, we have to use create sequence statement of oracle. This video of create sequence in oracle, will give you hands on practice about sequences in oracle. We have used screen capture option for making this video of sequences in oracle. The main objective of this video create sequence in oracle is to give the users a real hands on practice to use sequences in oracle. The language of the video is hindi, if you wish to watch this video in english, please suggest in comment section of this video. Oracle uses the concept of SEQUENCE to create numerical primary key values as we add rows of data into a table. Whereas numerical primary key population for MySQL and SQL Server is tied to individual tables, in Oracle the SEQUENCE construct is created separately and is not tied to an individual table. Hope this video of sequences in oracle, is helpful for you. Music www.bensound.com facebook page www.facebook.com/learningseveryday -~-~~-~~~-~~-~- Please watch: "what is flow chart | symbols of flowchart explained in hindi" https://www.youtube.com/watch?v=k2I8gp1NGGU -~-~~-~~~-~~-~-
Views: 217 Learning Everyday
Oracle Tutorial || Oracle|Sql -Other DB Objects-Sequence Part - 1 by basha
 
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DURGASOFT is INDIA's No.1 Software Training Center offers online training on various technologies like JAVA, .NET , ANDROID,HADOOP,TESTING TOOLS ,ADF,INFORMATICA,TABLEAU,IPHONE,OBIEE,ANJULAR JS, SAP... courses from Hyderabad & Bangalore -India with Real Time Experts. Mail us your requirements to [email protected] so that our Supporting Team will arrange Demo Sessions. Ph:Call +91-8885252627,+91-7207212428,+91-7207212427,+91-8096969696. http://durgasoft.com http://durgasoftonlinetraining.com https://www.facebook.com/durgasoftware http://durgajobs.com https://www.facebook.com/durgajobsinfo......
When to use Oracle Database Bitmap Indexes Lesson 1
 
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This tutorial will identify some use cases for Oracle bitmap indexes, including some of the more advanced capabilities. See all lessons, free, at http://www.skillbuilders.com/when-to-use-oracle-bitmap-indexes. Indexing your Oracle Database for best performance? There are cases, depending on data structures and queries, where b-tree indexes are not useful (e.g. scan access paths perform inadequately). In these cases, bitmap indexes may be a better solution. Bitmap indexes are a powerful tool, but they need to be used with care. Inappropriate use may cause problems worse than those they solve. The tutorial covers somewhat more advanced cases such as using bitmap join indexes to denormalize a snowflake schema, and to enable star transformations in queries that join fact tables to several dimension tables. This training will benefit any Oracle DBA administering a Data Warehouse or VLDB and "power" developers working in same. Instructor: Oracle Certified Master DBA John Watson, SkillBuilders
Views: 552 SkillBuilders
SelectTec | Aula Nº 13 | Primary key - Oracle SQL Developer
 
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primary key syntax: create table nome_tabela (coluna1 tipo not null, coluna2 tipo, constraint nome_pk primary key (coluna1) );
Views: 2700 SelectTec
What is REVERSE INDEX? What does REVERSE INDEX mean? REVERSE INDEX meaning & explanation
 
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What is REVERSE INDEX? What does REVERSE INDEX mean? REVERSE INDEX meaning - REVERSE INDEX definition - REVERSE INDEX explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. SUBSCRIBE to our Google Earth flights channel - https://www.youtube.com/channel/UC6UuCPh7GrXznZi0Hz2YQnQ Database management systems provide multiple types of indexes to improve performance and data integrity across diverse applications. Index types include b-trees, bitmaps, and r-trees. In database management systems, a reverse key index strategy reverses the key value before entering it in the index. E.g., the value 24538 becomes 83542 in the index. Reversing the key value is particularly useful for indexing data such as sequence numbers, where each new key value is greater than the prior value, i.e., values monotonically increase. Reverse key indexes have become particularly important in high volume transaction processing systems because they reduce contention for index blocks. Reversed key indexes use b-tree structures, but preprocess key values before inserting them. Simplifying, b-trees place similar values on a single index block, e.g., storing 24538 on the same block as 24539. This makes them efficient both for looking up a specific value and for finding values within a range. However if the application inserts values in sequence, each insert must have access to the newest block in the index in order to add the new value. If many users attempt to insert at the same time, they all must write to that block and have to get in line, slowing down the application. This is particularly a problem in clustered databases, which may require the block to be copied from one computer's memory to another's to allow the next user to perform their insert. Reversing the key spreads similar new values across the entire index instead of concentrating them in any one leaf block. This means that 24538 appears on the same block as 14538 while 24539 goes to a different block, eliminating this cause of contention. (Since 14538 would have been created long before 24538, their inserts don't interfere with each other.) Reverse indexes are just as efficient as unreversed indexes for finding specific values, although they aren't helpful for range queries. Range queries are uncommon for artificial values such as sequence numbers. When searching the index, the query processor simply reverses the search target before looking it up. Typically, applications delete data that is older on average before deleting newer data. Thus, data with lower sequence numbers generally go before those with higher values. As time passes, in standard b-trees, index blocks for lower values end up containing few values, with a commensurate increase in unused space, referred to as "rot". Rot not only wastes space, but slows query speeds, because a smaller fraction of a rotten index's blocks fit in memory at any one time. In a b-tree, if 14538 gets deleted, its index space remains empty. In a reverse index, if 14538 goes before 24538 arrives, 24538 can reuse 14538's space.
Views: 767 The Audiopedia
Oracle SQL Tutorial For Beginners | Oracle SQL Online Training - Session 2
 
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Course : Oracle SQL Online Training Mode of Training : Online Duration : 40 Hours Timings : Flexible Oracle SQL Online Training Demo Registration Link : http://svsoftsolutions.com/demo.aspx Introduction to SQL What is SQL? What Can SQL do? RDBMS SQL Syntax Database Tables SQL Statements Overview of Most Important SQL Commands SELECT UPDATE DELETE INSERT CREATE TABLE ALTER TABLE DROP TABLE CREATE INDEX DROP INDEX SQL SELECT Statement SELECT syntax Demo Database SELECT Column Example SELECT * Example SQL Distinct SELECT DISTINCT Statement SELECT DISTINCT Syntax SELECT DISTINCT Example SQL WHERE Clause WHERE Clause WHERE Clause Example Operators in the WHERE Clause SQL AND & OR Operators AND Operator Example OR Operator Example Combining AND & OR SQL ORDER BY ORDER BY Syntax ORDER BY Example ORDER BY DESC Example ORDER BY Several Column Examples SQL Insert Into INSERT INTO Syntax INSERT INTO Examples Insert Data into Specified Columns SQL UPDATE UPDATE Syntax UPDATE Example Watch out UPDATE statement. SQL DELETE DELETE Syntax DELETE Examples Delete All the Data SQL Aliases SQL Alias Syntax for Columns Alias Example for Table Columns Alias Example for Tables. SQL Joins Different SQL JOINs INNER JOIN LEFT OUTER JOIN RIGHT OUTER JOIN FULL OUTER JOIN SQL UNION UNION Syntax UNION Example UNION ALL Syntax UNION ALL Example SQL Insert Into Select INSERT INTO SELECT Syntax INSERT INTO SELECT Examples SQL Create Table CREATE TABLE Syntax CREATE TABLE Example SQL Constraints CREATE TABLE + CONSTRAINT Syntax NOT NULL Constraint UNIQUE Constraint UNIQUE Constraint on CREATE TABLE UNIQUE Constraint on ALTER TABLE To DROP a UNIQUE Constraint PRIMARY KEY Constraint PRIMARY KEY Constraint on CREATE TABLE PRIMARY KEY Constraint on ALTER TABLE To DROP a PRIMARY KEY Constraint FOREIGN KEY Constraint FOREIGN KEY Constraint on CREATE TABLE FOREIGN KEY Constraint on ALTER TABLE To DROP a FOREIGN KEY Constraint CHECK Constraint CHECK Constraint on CREATE TABLE CHECK Constraint on ALTER TABLE To DROP a CHECK Constraint DEFAULT Constraint on CREATE TABLE DEFAULT Constraint on ALTER TABLE To DROP a DEFAULT Constraint SQL Create Index CREATE INDEX Syntax CREATE UNIQUE INDEX Syntax CREATE INDEX Example SQL DROP Command The DROP INDEX Statement The DROP TABLE Statement The DROP DATABASE Statement The TRUNCATE TABLE Statement SQL ALTER Command The ALTER TABLE Statement ALTER TABLE Example Change Data Type Example DROP COLUMN Example SQL VIEWS CREATE VIEW Statement CREATE VIEW Syntax CREATE VIEW Examples CREATE OR REPLACE VIEW Syntax Dropping a View SQL NULL Values Working with NULL Values IS NULL IS NOT NULL SQL NULL Functions NVL COALESCE For more details visit our website : www.svsoftsolutions.com Or reach us @ USA : +1-845-915-8712 (Toll Free), India : +91-9642373173
Views: 62 SV Soft Solutions
[CSIS 1550] - MySQL: Views, Users, Indexes and Constraints
 
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[CSIS 1550] - MySQL: Views, Users, Indexes and Constraints OVERVIEW This lecture introduces us to various tasks performed by and responsibilities of the database administrator (DBA). * VIEWS * Creating simple views * Creating views from joins * Creating views with custom field names * Pros and Cons of Views * USERS * Creating * Granting rights * Revoking rights * Removing users * Note: Public key word (page 194) does not work * INDEXES * Creating * Dropping * Unique Indexes * Data Integrity * Constraints READING ASSIGNMENT The lecture is based on pages 181 through 205 of the text book ACTIVITIES In class, we will work through several examples together. Each of these exercises will refresh our memories of earlier concepts we've learned, and will further build on them as we create views, users, indexes and constraints. CODE - Views To create a view, use the following structure shown below CREATE VIEW [Give the View a Name] [(enter custom field names, in parenthesis, if you want)] AS [Some query]; For example: CREATE VIEW REP2 (ID, NAME) AS SELECT REP_NUM, CONCAT(FIRST_NAME, " ", LAST_NAME) FROM REP; The above will create a view called "REP2" that uses ID and NAME as the field names. It will give you a view like this: SELECT * FROM REP2; +----+-----------------+ | id | name | +----+-----------------+ | 20 | Kaiser, Valerie | | 35 | Hull, Richard | | 65 | Perez, Juan | +----+-----------------+ Users: creation Creating users is a simple process. Below is the structure: CREATE USER '[Give the User a Name]' IDENTIFIED BY '[Give the User a Password]'; For example: CREATE USER 'Beavis' IDENTIFIED BY 'Password'; Users: access Once a users are created, you can grant them various levels of access using the following structure: GRANT [List Privilege(s) Here] [(field names, if you'd like)] ON [Database Name Here].[Table Name Here] TO [User's Name Here]; For Example, the query below will grant user "Beavis" the ability to select the REP_NUM, FIRST_NAME and LAST_NAME fields from the Rep table in the Premiere database: GRANT SELECT (REP_NUM, LAST_NAME, FIRST_NAME) ON PREMIERE.REP TO 'Beavis'; To revoke access, the syntax is very similiar: REVOKE [List Privilege(s) separated by commas Here] ON [Database Name Here].[Table Name Here] FROM [User's Name Here]; For example, the query below will revoke all privileges on all tables in all databases from user "Beavis." REVOKE ALL ON *.* FROM 'Beavis'; Below is a list of some of the privileges that can be granted or revoked: UPDATE INSERT DELETE SELECT DROP ALTER ALL Indexes Indexes make it much quicker to access records in a database. The syntax for creating, viewing and dropping an index is as follows: CREATE INDEX [Give the Index a Name] ON [Name of the Table] ([Field Name sort direction, Field Name sort direction, etc.]) SHOW INDEX FROM [Table Name]; DROP INDEX [Index Name] ON [TABLE]; For example: CREATE INDEX CustName ON CUSTOMER (CUSTOMER_NAME DESC); SHOW INDEX FROM CUSTOMER; DROP INDEX CustName on CUSTOMER; Unique Index Unique indexes have two purposes. They act as a standard index (see above) They prevent duplicate data entry (much like a primary key) The syntax is identical to the standard index syntax with one exception. The word "UNIQUE" is used in the CREATE query. CREATE UNIQUE INDEX [Give the Index a Name] ON [Name of the Table] ([Field Name sort direction, Field Name sort direction, etc.)] Constraints As a control freak we want to make sure that we protect the data every way we know how. Contraints can be a very useful tool for that very purpose. There are many types of constraints. Here are just a few: * Primary Keys * Foreign Keys * Legal Values Our focus today is on Foreign Keys. Enforcing a Foreign Key Constraint will prevent a user from being able to add a foreign key value in a table if it does not already exist as a Primary Key in a specified table. For example, to prevent users from enter a rep_num value in the customer table that does not exist in the rep table, we can use a foreign key constraint: ALTER TABLE CUSTOMER ADD FORIEGN KEY (REP_NUM) REFERENCES REP(REP_NUM); Currently, the only rep_num values in the rep table are 20, 35 and 65. If a user tries to use the value 75 (for example) in the customer table, the above Constraint prevents that from happening because 75 is not a valid rep_num in the rep table. RESOURCES https://dev.mysql.com/doc/refman/5.7/en/create-view.html https://dev.mysql.com/doc/refman/5.7/en/adding-users.html https://dev.mysql.com/doc/refman/5.7/en/drop-user.html https://dev.mysql.com/doc/refman/5.7/en/create-index.html https://dev.mysql.com/doc/refman/5.5/en/create-table-foreign-keys.html
Views: 152 StoneColdProfessor
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
Views: 883929 kudvenkat
Oracle ||  Referential Integrity Constrants Part-1 by Dinesh
 
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DURGASOFT is INDIA's No.1 Software Training Center offers online training on various technologies like JAVA, .NET , ANDROID,HADOOP,TESTING TOOLS ,ADF,INFORMATICA,TABLEAU,IPHONE,OBIEE,ANJULAR JS, SAP... courses from Hyderabad & Bangalore -India with Real Time Experts. Mail us your requirements to [email protected] so that our Supporting Team will arrange Demo Sessions. Ph:Call +91-8885252627,+91-7207212428,+91-7207212427,+91-8096969696. http://durgasoft.com http://durgasoftonlinetraining.com https://www.facebook.com/durgasoftware http://durgajobs.com https://www.facebook.com/durgajobsinfo......
Rank and Dense Rank in SQL Server
 
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rank and dense_rank example difference between rank and dense_rank with example rank vs dense_rank in sql server 2008 sql server difference between rank and dense_rank In this video we will discuss Rank and Dense_Rank functions in SQL Server Rank and Dense_Rank functions Introduced in SQL Server 2005 Returns a rank starting at 1 based on the ordering of rows imposed by the ORDER BY clause ORDER BY clause is required PARTITION BY clause is optional When the data is partitioned, rank is reset to 1 when the partition changes Difference between Rank and Dense_Rank functions Rank function skips ranking(s) if there is a tie where as Dense_Rank will not. For example : If you have 2 rows at rank 1 and you have 5 rows in total. RANK() returns - 1, 1, 3, 4, 5 DENSE_RANK returns - 1, 1, 2, 3, 4 Syntax : RANK() OVER (ORDER BY Col1, Col2, ...) DENSE_RANK() OVER (ORDER BY Col1, Col2, ...) RANK() and DENSE_RANK() functions without PARTITION BY clause : In this example, data is not partitioned, so RANK() function provides a consecutive numbering except when there is a tie. Rank 2 is skipped as there are 2 rows at rank 1. The third row gets rank 3. DENSE_RANK() on the other hand will not skip ranks if there is a tie. The first 2 rows get rank 1. Third row gets rank 2. SELECT Name, Salary, Gender, RANK() OVER (ORDER BY Salary DESC) AS [Rank], DENSE_RANK() OVER (ORDER BY Salary DESC) AS DenseRank FROM Employees RANK() and DENSE_RANK() functions with PARTITION BY clause : Notice when the partition changes from Female to Male Rank is reset to 1 SELECT Name, Salary, Gender, RANK() OVER (PARTITION BY Gender ORDER BY Salary DESC) AS [Rank], DENSE_RANK() OVER (PARTITION BY Gender ORDER BY Salary DESC) AS DenseRank FROM Employees Use case for RANK and DENSE_RANK functions : Both these functions can be used to find Nth highest salary. However, which function to use depends on what you want to do when there is a tie. Let me explain with an example. If there are 2 employees with the FIRST highest salary, there are 2 different business cases 1. If your business case is, not to produce any result for the SECOND highest salary, then use RANK function 2. If your business case is to return the next Salary after the tied rows as the SECOND highest Salary, then use DENSE_RANK function Since we have 2 Employees with the FIRST highest salary. Rank() function will not return any rows for the SECOND highest Salary. WITH Result AS ( SELECT Salary, RANK() OVER (ORDER BY Salary DESC) AS Salary_Rank FROM Employees ) SELECT TOP 1 Salary FROM Result WHERE Salary_Rank = 2 Though we have 2 Employees with the FIRST highest salary. Dense_Rank() function returns, the next Salary after the tied rows as the SECOND highest Salary WITH Result AS ( SELECT Salary, DENSE_RANK() OVER (ORDER BY Salary DESC) AS Salary_Rank FROM Employees ) SELECT TOP 1 Salary FROM Result WHERE Salary_Rank = 2 You can also use RANK and DENSE_RANK functions to find the Nth highest Salary among Male or Female employee groups. The following query finds the 3rd highest salary amount paid among the Female employees group WITH Result AS ( SELECT Salary, Gender, DENSE_RANK() OVER (PARTITION BY Gender ORDER BY Salary DESC) AS Salary_Rank FROM Employees ) SELECT TOP 1 Salary FROM Result WHERE Salary_Rank = 3 AND Gender = 'Female' Text version of the video http://csharp-video-tutorials.blogspot.com/2015/10/rank-and-denserank-in-sql-server.html Slides http://csharp-video-tutorials.blogspot.com/2015/10/rank-and-denserank-in-sql-server_1.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists
Views: 73969 kudvenkat
SelectTec | Aula Nº 14 | Drop Table - Oracle SQL Developer
 
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drop table syntax: drop table nome_tabela ;
Views: 2388 SelectTec
Oracle SQL Programming - Searching and Sorting (SELECT)
 
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A practical demonstration of searching and sorting records using Oracle. Includes the use of various WHERE clause operators that can be used with the SELECT keyword, and the use of the ORDER BY clause.
Views: 114 Brian Green
Advantages and disadvantages of indexes in sql server   Part 38
 
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In this video we will learn about 1. Advantages and disadvantages of indexes 2. The types of queries that can benefit from indexes 3. Covering Queries Text version of the video http://csharp-video-tutorials.blogspot.com/2012/09/advantages-and-disadvantages-of-indexes.html Slides http://csharp-video-tutorials.blogspot.com/2013/09/part-38-adv-dis-adv-of-indexes.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists
Views: 158583 kudvenkat
Difference between rank dense rank and row number in SQL
 
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row_number vs rank vs dense_rank in sql server dense_rank vs rank vs row_number sql server rank dense_rank row_number in sql server In this video we will discuss the similarities and difference between RANK, DENSE_RANK and ROW_NUMBER functions in SQL Server. Similarities between RANK, DENSE_RANK and ROW_NUMBER functions Returns an increasing integer value starting at 1 based on the ordering of rows imposed by the ORDER BY clause (if there are no ties) ORDER BY clause is required PARTITION BY clause is optional When the data is partitioned, the integer value is reset to 1 when the partition changes SQL Script to create the Employees table Create Table Employees ( Id int primary key, Name nvarchar(50), Gender nvarchar(10), Salary int ) Go Insert Into Employees Values (1, 'Mark', 'Male', 6000) Insert Into Employees Values (2, 'John', 'Male', 8000) Insert Into Employees Values (3, 'Pam', 'Female', 4000) Insert Into Employees Values (4, 'Sara', 'Female', 5000) Insert Into Employees Values (5, 'Todd', 'Male', 3000) Notice that no two employees in the table have the same salary. So all the 3 functions RANK, DENSE_RANK and ROW_NUMBER produce the same increasing integer value when ordered by Salary column. SELECT Name, Salary, Gender, ROW_NUMBER() OVER (ORDER BY Salary DESC) AS RowNumber, RANK() OVER (ORDER BY Salary DESC) AS [Rank], DENSE_RANK() OVER (ORDER BY Salary DESC) AS DenseRank FROM Employees You will only see the difference when there ties. Now let's include duplicate values for Salary column. To do this First delete existing data from the Employees table DELETE FROM Employees Insert new rows with duplicate valuse for Salary column Insert Into Employees Values (1, 'Mark', 'Male', 8000) Insert Into Employees Values (2, 'John', 'Male', 8000) Insert Into Employees Values (3, 'Pam', 'Female', 8000) Insert Into Employees Values (4, 'Sara', 'Female', 4000) Insert Into Employees Values (5, 'Todd', 'Male', 3500) Notice 3 employees have the same salary 8000. When you execute the following query you can clearly see the difference between RANK, DENSE_RANK and ROW_NUMBER functions. SELECT Name, Salary, Gender, ROW_NUMBER() OVER (ORDER BY Salary DESC) AS RowNumber, RANK() OVER (ORDER BY Salary DESC) AS [Rank], DENSE_RANK() OVER (ORDER BY Salary DESC) AS DenseRank FROM Employees Difference between RANK, DENSE_RANK and ROW_NUMBER functions ROW_NUMBER : Returns an increasing unique number for each row starting at 1, even if there are duplicates. RANK : Returns an increasing unique number for each row starting at 1. When there are duplicates, same rank is assigned to all the duplicate rows, but the next row after the duplicate rows will have the rank it would have been assigned if there had been no duplicates. So RANK function skips rankings if there are duplicates. DENSE_RANK : Returns an increasing unique number for each row starting at 1. When there are duplicates, same rank is assigned to all the duplicate rows but the DENSE_RANK function will not skip any ranks. This means the next row after the duplicate rows will have the next rank in the sequence. Text version of the video http://csharp-video-tutorials.blogspot.com/2015/10/difference-between-rank-denserank-and.html Slides http://csharp-video-tutorials.blogspot.com/2015/10/difference-between-rank-denserank-and_2.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists
Views: 40577 kudvenkat
Oracle Database | Bangla Tutorials 31 :: Truncate Table |(Remove all Record a Table)
 
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www.facebook.com/oracle.shohag Email : [email protected] Website : www.oraclebangla.com skype id : shoahgcid2013 Topics :Truncate Table
Views: 2697 Oracle Bangla

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