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SQL Inline Table Valued Functions
 
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Jamie King of Neumont University briefly showing how to create an inline tabled valued function in T-SQL.
Views: 2384 Jamie King
How to return multiple values from a function in oracle pl/sql ? (without using out parameter)
 
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This video demonstrates how a function can return multiple values to the calling environment, but without using multiple out parameters, the video shows an example on how we can create a object, a nested table based on the object and then returning the nested table type from the function.
Views: 16948 Kishan Mashru
Oracle tutorial : How to return multiple values from the Function in Oracle PL/SQL
 
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Oracle tutorial : How to return multiple values from the Function in Oracle PLSQL pl sql function This video tutorial tell you How to return multiple rows from the Function in Oracle PLSQL Using the TYPE object you can able return multiple rows from the function.Here object concept of oracle is used. Subscribe on youtube: https://www.youtube.com/channel/UCpiyAesWNYOXSz5GPq8lbkA For more tutorial please visit #techquerypond https://techquerypond.wordpress.com https://twitter.com/techquerypond
Views: 5753 Tech Query Pond
Analytical Functions in oracle explained with real examples
 
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This video explains analytical functions and how they are implemented in real projects. Analytical functions are somewhat similar to aggregate functions,but they offer much more. Why use analytical function ? They allow you to write fast and concise queries which otherwise will involve self join and long processing times They allow you to perform aggregate functions independently on sets of partitions. You can access values from previous rows in current row and you can restrict the window on which you want to apply this analytical function. I have given additional practice exercises along with the dataset so that you can comfortably work with analytical functions. You can find the sample problems along with dataset in the below link. http://www.internshipsfromhome.com/oracle-analytical-functions-ddl-and-dml/
Views: 13830 Tech Coach
SQL 21 NVL function Ae47
 
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Use of NVL in oracle to deal with null values
Views: 1194 hammadshams
Hierarchical Queries in Oracle (CONNECT BY)
 
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This video demonstrates one of the ways to query hierarchical data from Oracle. For more information see: https://oracle-base.com/articles/misc/hierarchical-queries Website: https://oracle-base.com Blog: https://oracle-base.com/blog Twitter: https://twitter.com/oraclebase Cameo by Arjen Visser Blog: http://blog.dbvisit.com/ Twitter: https://twitter.com/dbvisit Website: http://www.dbvisit.com/ Cameo appearances are for fun, not an endorsement of the content of this video.
Views: 25885 ORACLE-BASE.com
Getting Started with PL/SQL Table Functions 2. Returning Multiple Columns
 
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In this second module in the series, Steven Feuerstein explores the code you need to write when you want your table function to return an array with multiple columns. Best taken as part of the Oracle Dev Gym PL/SQL Table Functions class: https://devgym.oracle.com/pls/apex/dg/class/pl-sql-table-functions.html ======================================== Practically Perfect PL/SQL with Steven Feuerstein Copyright © 2018 Oracle and/or its affiliates. Oracle is a registered trademark of Oracle and/or its affiliates. All rights reserved. Other names may be registered trademarks of their respective owners. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the “Materials”). The Materials are provided “as is” without any warranty of any kind, either express or implied, including without limitation warranties or merchantability, fitness for a particular purpose, and non-infringement.
4 of 6  SQL Advanced with Oracle  - Inline subquery and rownum
 
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This video gives an example of an inline subquery, a query in the FROM clause of another query. We also see how we might use the rownum option to limit how many rows of output we get. (4 of 6) There is also an "SQL Fundamentals" series. (Search for "databasemec" for tutorials using SQL Server.)
Views: 10399 Jennifer Kreie
5 of 6  SQL Advanced with Oracle - A query with nested aggregate functions
 
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This video gives an example of nested aggregate functions. A subquery with aggregate functions is placed in the WHERE clause of the outer query, which also contains aggregate functions. (5 of 6) There is also an "SQL Fundamentals" series. (Search for "databasemec" for tutorials using SQL Server.)
Views: 9027 Jennifer Kreie
An in depth analysis of inline functions
 
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A brief explanation on inline functions in c++
Views: 666 Shriram Vasudevan
Working with dates in Oracle PLSQL.
 
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Dates in Oracle PL SQL is definitely the most powerful among all other databases. It gives us full flexibility to manipulate it of our choice, whether you are calculating days, months or year, printing date and time in various format. Useful date functions add_months, months_between, last_day, next_day and to_char helps us a lot in handling date time in our pl sql programming.
Views: 5174 Subhroneel Ganguly
Return sys_refcursor through function in PL/SQL
 
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How to return a set of Table row data through function using sys_refcursor in PL/SQL A simple tutorial to demonstrate using ref cursor in pl sql function opening and return ref cursor.
Views: 2863 Subhroneel Ganguly
Oracle Core, Лекция 7
 
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Ссылка на файл с презентацией: https://docs.google.com/presentation/d/1Afp1WPhUBryLLSQz9hLffrva27KIaGUNlSo6ycL7CvU/edit?usp=sharing (презентация может быть с анимацией) Ссылка на краткий конспект лекции: https://docs.google.com/document/d/1_eXR7XOgdxcGXSO09Pbuh5_pLkysXeHNkZ-8Q5Ym1tE/edit?usp=sharing 1. Структура процедуры/функции: create or replace procedure/function. Вызов с правами создателя/вызывающего (authid definer/current_user). Pipelined функции. Determenistic функции. 2. Пакеты. Структура спецификации и тела пакета: create or replace package/create or replace package body. 3. Перегрузка процедур/функций в пакетах 4. Глобальные переменные в пакетах 5. INLINE Pragma 6. SERIALLY_REUSABLE Pragma 7. Conditional compilation Pragma 8. Ограничения языка PL/SQL 9. Package Writing Guidelines 10. PL/SQL Source Text Wrapping 11. Спецификация без тела 12. Dependencies: dependent object, referenced object. Представление dba_dependencies. 13. Типы зависимостей: direct dependent, indirect dependent, cascading invalidation, coarse-grained invalidation, fine-grained invalidation 14. Запуск удаленных процедур (через dblink) 15. Jobs. Представления dba_jobs, dba_jobs_running. Пакет dbms_job 16. Метод dbms_job.submit 17. Scheduler. Представления dba_scheduler_jobs, dba_scheduler_running_jobs. Пакет dbms_scheduler 18. Методы dbms_scheduler.create_job и dbms_scheduler.drop_job 19. Периодичность запуска scheduler jobs 20. Создание цепочек (chans) джобов. Методы: dbms_scheduler.create_chain, dbms_scheduler.define_chain_step, dbms_scheduler.define_chain_rule, dbms_scheduler.enable 21. Native/interpreted компиляция Oracle Database, БД Oracle, вебинар Oracle, презентация Oracle, урок Oracle, лекция Oracle, обучение Oracle
Efficient Function Calls From SQL (Part 4) : Scalar Subquery Caching vs PL/SQL Function Result Cache
 
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The fourth part of a mini-series of videos showing how you can improve the performance of function calls from SQL. In this episode, we compare Scalar Subquery Caching with the the Cross-Session PL/SQL Function Result Cache to see which we should use for best performance. For more information see: https://oracle-base.com/articles/misc/efficient-function-calls-from-sql#scalar-subquery-caching-revisited Website: https://oracle-base.com Blog: https://oracle-base.com/blog Twitter: https://twitter.com/oraclebase Cameo by Alex Gorbachev : Blog: http://www.oracloid.com/ Twitter: https://twitter.com/alexgorbachev Website: http://www.pythian.com/about/alex-gorbachev/ Cameo appearances are for fun, not an endorsement of the content of this video.
Views: 1505 ORACLE-BASE.com
Use NOCOPY to Improve Performance
 
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The NOCOPY parameter hint tells the PL/SQL compiler to pass OUT and IN-OUT parameters "by reference" (meaning: do not copy in, nor copy out). The result is better performance and reduced PGA consumption. ====================================== Practically Perfect PL/SQL with Steven Feuerstein 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.
How to Code Oracle Analytic Functions
 
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Many more free Oracle Database and SQL tutorials at http://skillbuilders.com/free-oracle-tutorials. SQL is a language that allows you to perform queries to answer a wide range of questions about your data. While standard SQL is quite powerful, there are many questions that it cannot answer at all or that it can only answer with complex and inefficient SQL workarounds. Questions about running totals, percent of total, and ranking within a group fall into this area. Also, more complex issues such as Top-N within a group and aggregates over a range also fall in this arena. These questions can be easily answered via a new class of SQL statements called Analytic Functions. This presentation will show you how to use Oracle's Analytic Function extensions to SQL to answer these questions simply and efficiently.
Views: 25880 SkillBuilders
SQL: Inline Views
 
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In this Tutorial, you'll learn the advantages of inline view and how to make use of it..
Views: 17546 radhikaravikumar
Lead and Lag functions in SQL Server 2012
 
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In this video we will discuss about Lead and Lag functions. Lead and Lag functions Introduced in SQL Server 2012 Lead function is used to access subsequent row data along with current row data Lag function is used to access previous row data along with current row data ORDER BY clause is required PARTITION BY clause is optional Syntax LEAD(Column_Name, Offset, Default_Value) OVER (ORDER BY Col1, Col2, ...) LAG(Column_Name, Offset, Default_Value) OVER (ORDER BY Col1, Col2, ...) Offset - Number of rows to lead or lag. Default_Value - The default value to return if the number of rows to lead or lag goes beyond first row or last row in a table or partition. If default value is not specified NULL is returned. We will use the following Employees table for the examples in this video 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', 1000) Insert Into Employees Values (2, 'John', 'Male', 2000) Insert Into Employees Values (3, 'Pam', 'Female', 3000) Insert Into Employees Values (4, 'Sara', 'Female', 4000) Insert Into Employees Values (5, 'Todd', 'Male', 5000) Insert Into Employees Values (6, 'Mary', 'Female', 6000) Insert Into Employees Values (7, 'Ben', 'Male', 7000) Insert Into Employees Values (8, 'Jodi', 'Female', 8000) Insert Into Employees Values (9, 'Tom', 'Male', 9000) Insert Into Employees Values (10, 'Ron', 'Male', 9500) Go Lead and Lag functions example WITHOUT partitions : This example Leads 2 rows and Lags 1 row from the current row. When you are on the first row, LEAD(Salary, 2, -1) allows you to move forward 2 rows and retrieve the salary from the 3rd row. When you are on the first row, LAG(Salary, 1, -1) allows us to move backward 1 row. Since there no rows beyond row 1, Lag function in this case returns the default value -1. When you are on the last row, LEAD(Salary, 2, -1) allows you to move forward 2 rows. Since there no rows beyond the last row 1, Lead function in this case returns the default value -1. When you are on the last row, LAG(Salary, 1, -1) allows us to move backward 1 row and retrieve the salary from the previous row. SELECT Name, Gender, Salary, LEAD(Salary, 2, -1) OVER (ORDER BY Salary) AS Lead_2, LAG(Salary, 1, -1) OVER (ORDER BY Salary) AS Lag_1 FROM Employees Lead and Lag functions example WITH partitions : Notice that in this example, Lead and Lag functions return default value if the number of rows to lead or lag goes beyond first row or last row in the partition. SELECT Name, Gender, Salary, LEAD(Salary, 2, -1) OVER (PARTITION By Gender ORDER BY Salary) AS Lead_2, LAG(Salary, 1, -1) OVER (PARTITION By Gender ORDER BY Salary) AS Lag_1 FROM Employees Text version of the video http://csharp-video-tutorials.blogspot.com/2015/10/lead-and-lag-functions-in-sql-server.html Slides http://csharp-video-tutorials.blogspot.com/2015/10/lead-and-lag-functions-in-sql-server_5.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: 46699 kudvenkat
Tutorial 51 : Inline View
 
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Hi Friends! Here we are learning about INLINE VIEWS in Oracle. Hope the concept and example would be clear to you. For any confusion or doubt, let me know in comment box. YourSmartCode Facebook Link : https://www.facebook.com/yoursmartcode My Personal Facebook Link : https://www.facebook.com/saurabhsagarsinha1 Thanks! Happy Coding.
Views: 203 YourSmartCode
SQL 12c Tutorial 17 :  SQL Inline View Sub-Queries examples
 
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SQL 12c Tutorial 17 : SQL Inline View Sub-Queries examples SQL 12c Tutorial for beginners Oracle SQL 12c Tutorial for beginners SQL In Line Views SQL Sub Queries
Views: 659 TechLake
SQL: Analytical Functions
 
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In this tutorial, you'll learn how to use the analytical functions..
Views: 35462 radhikaravikumar
How to use Read Database Cleanse function in MDM 9.7.1 Oracle
 
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This video explains the Read Database Cleanse function, its uses along with Tips and Tricks to use inline database functions
Views: 844 Informatica Support
Using an inline view in an sql statement in SQL / PLSQL
 
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Using an inline view in an sql statement in SQL/PLSQL
Views: 2495 Subhroneel Ganguly
SQL: Rank & Dense_rank functions
 
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In this tutorial, you'll learn the difference between rank() and dense_rank() functions..
Views: 25981 radhikaravikumar
DIFFERENCE BETWEEN PROCEDURE AND FUNCTION IN ORACLE PL/SQL WITH EXAMPLE
 
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The audio and video now synced. This video is a free tutorial on the difference between procedure and a function. The tutorial demonstrates the difference between oracle PL/SQL stored procedure and a function, also it shows the different type of return statement in both of the database objects and various ways to execute a procedure and a function. By learning the difference the users can make an effective judgment on when to use procedure and when to use a function. If you want more such videos of exciting and amazing 'difference between' concepts, check out the links below: union and union all: https://youtu.be/n9FqQOd8liY char and varchar2: https://youtu.be/039qzwjWf4k replace and translate: https://youtu.be/HKYF77BGzOE in and exists: https://youtu.be/REX4IjRYlFw rank and dense_rank: https://youtu.be/WGSX998hZ9M delete and truncate: https://youtu.be/u76wMm2byXo %type and %rowtype: https://youtu.be/MlLUFeZ_3eM
Views: 4100 Kishan Mashru
PL/SQL tutorial 38: Introduction to PL/SQL functions in Oracle Database
 
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PL/SQL tutorial for beginners Introduction to PL/SQL functions in Oracle Database by Manish Sharma ------------------------------------------------------------------------ ►►►LINKS◄◄◄ Blog : http://bit.ly/introduction-to-plsql-function Previous Tutorial ► Blocks in Oracle Database https://youtu.be/rbarR4_gaH8 ► ------------------------------------------------------------------------- ►►►Let's Get Free Uber Cab◄◄◄ Use Referral Code UberRebellionRider and get $20 free for your first ride. ------------------------------------------------------------------------- ►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 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/ ___Facebook Official Page___ https://www.facebook.com/RebellionRider.official/ 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: 42569 Manish Sharma
PL/SQL: Difference between Views & MV
 
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In this tutorial, you'll know what are difference between views & materialized views..
Views: 30925 radhikaravikumar
SQL  Inline Views
 
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Views: 409 STUDENTS EDUCATION
SQL tutorial 60: SQL View in Oracle Database By Manish Sharma RebellionRider
 
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SQL View in Oracle Database. In this tutorial you will learn how to create a vie as well as how to replace a view along with the examples of all the DML e.g. DESCRIBE, SELECT, UPDATE, INSERT and Delete on view by Manish Sharma RebellionRider ------------------------------------------------------------------------ ►►►LINKS◄◄◄ Blog : http://bit.ly/sql-view-in-oracle-database Previous Tutorial ► Tut 5: SELECT statement http://youtu.be/f_mVBVgnqmM ------------------------------------------------------------------------- ►►►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 [email protected] Please please LIKE and SHARE my videos it makes me happy. Thanks for liking, commenting, sharing and watching more of our videos This is Manish from RebellionRider.com ♥ I LOVE ALL MY VIEWERS AND SUBSCRIBERS
Views: 39764 Manish Sharma
ORACLE SQL 18: Nested group functions
 
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http://studyandshare.wordpress.com/ http://www.facebook.com/groups/studyandsharevn/
Views: 787 studyandsharevn
Oracle Rowid, RowNum and row_number
 
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Oracle Rowid, RowNum and row_number... Explained in detailed...
Views: 5413 CONNECT TO LEARN
Subqueries: Databases for Developers #11
 
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In SQL you can base queries on the results of other queries. This video explains the various types of subquery and their uses, covering: - Inline views - IN & EXISTS - Common table expressions/subquery factoring/with clause - Scalar subqueries Take the course; Databases for Developers: Next Level https://blogs.oracle.com/academy/take-your-sql-skills-to-the-next-level-with-this-free-online-10-part-tutorial Further reading: About Queries and Subqueries: https://docs.oracle.com/en/database/oracle/oracle-database/18/sqlrf/About-Queries-and-Subqueries.html Using Subqueries: https://docs.oracle.com/en/database/oracle/oracle-database/18/sqlrf/Using-Subqueries.html Need help with SQL? Ask us over on AskTOM: https://asktom.oracle.com Twitter: https://twitter.com/ChrisRSaxon Daily SQL Twitter tips: https://twitter.com/SQLDaily All Things SQL blog: https://blogs.oracle.com/sql/ ============================ The Magic of SQL with Chris Saxon Copyright © 2015 Oracle and/or its affiliates. Oracle is a registered trademark of Oracle and/or its affiliates. All rights reserved. Other names may be registered trademarks of their respective owners. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the “Materials”). The Materials are provided “as is” without any warranty of any kind, either express or implied, including without limitation warranties or merchantability, fitness for a particular purpose, and non-infringement.
Views: 1293 The Magic of SQL
Oracle Function Result Cache | Steven Feuerstein
 
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Returning for his seventh 2 Minute Tech Tip, Oracle architect and "Oracle PL/SQL Programming 6e" author Steven Feuerstein delivers the details on the Function Result Cache, a feature introduced in Oracle Database 11g that can add a performance boost to your applications.
Oracle   Views Part -1 by Dinesh
 
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Oracle || Corelated Subqueries Part - 1 by Dinesh
 
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Oracle PL/SQL Tutorials | Oracle PL:SQL Inline Cursor | by Mr.Vaman Deshmukh
 
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Oracle FROM_TZ Function
 
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https://www.databasestar.com/oracle-timezone-functions/ The Oracle FROM_TZ function is used to convert a value in a TIMESTAMP data type, and a specific TIME ZONE, to a TIMESTAMP WITH TIME ZONE value. It’s a helpful conversion function if you work with times and time zones a lot. The syntax of the FROM_TZ function is: FROM_TZ ( timestamp_value, timezone_value ) The parameters of this function are: - timestamp_value: the value in a TIMESTAMP format to convert. - timezone_value: this is the timezone value that the timestamp_value will be converted in to. If you want to know what values can be used as a timezone value, you can look in the database view here: SELECT * FROM v$timezone_names; For more information about the Oracle FROM_TZ function, including all of the SQL shown in this video and the examples, read the related article here: https://www.databasestar.com/oracle-timezone-functions/
Views: 45 Database Star
SQL Table Valued Functions
 
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Video talks about SQL Inline Table Valued Functions Table functions Step by step SQL Training videos SQL Tutorial SSIS Tutorial Please check below channel for more videos ... https://www.youtube.com/channel/UCgWvQ6cBxZwABl_hL48ayXg
Views: 624 Training2SQL MSBI
Querying a table   Part 3 Single Row Numeric Functions Oracle SQL
 
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This video shows how to Querying a table Part 3 Single Row Numeric Functions in Oracle SQL. Try to share these videos for poor students and subscribe this channel for more upcoming other technical videos.
Views: 46 Technology mart
Creating a Simple Table Valued Function
 
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Craft Simple Inline TVF
Views: 4704 Mike
NOT NULL AND CHECK CONSTRAINT IN ORACLE SQL WITH EXAMPLE
 
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This video tutorial contains information about constraints in an RDBMS system, along with the inline and out of line constraint declaration type available in Oracle SQL. The video also demonstrates examples with check and not null constraint in Oracle SQL.
Views: 784 Kishan Mashru
NVL2 Function in SQL Query
 
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NVL2(): The Oracle NVL2 function extends the functionality found in the NVL function. It lets you substitutes a value when a null value is encountered as well as when a non-null value is encountered. Syntax: NVL2( string1, value_if_NOT_null, value_if_null ) Arguments: string1 is the string to test for a null value. value_if_NOT_null is the value returned if string1 is not null. value_if_null is the value returned if string1 is null. Queries used in video: select ename, NVL2(mgr,'Yes','No Manager') from emp; select ename,sal,NVL2(comm,'Has some value here','No Value') from emp;
Views: 1564 WingsOfTechnology
Dynamic SQL vs Stored Procedure
 
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Text version of the video http://csharp-video-tutorials.blogspot.com/2017/05/dynamic-sql-vs-stored-procedure.html Slides http://csharp-video-tutorials.blogspot.com/2017/05/dynamic-sql-vs-stored-procedure_5.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 SQL Server Tutorial Videos https://www.youtube.com/playlist?list=PL08903FB7ACA1C2FB In this video we will discuss the advantages and disadvantages of Dynamic SQL and Stored Procedures based on the following aspects 1. Separating database logic from business logic 2. Network traffic 3. SQL Injection Attacks 4. Cached query plans reuse 5. Maintenance 6. Implementing flexible logic Separating database logic from business logic : Stored procedures allow us to keep database logic separate from business logic. The benefit of keeping database logic separate from the business logic is that, if there is an issue with the business logic you know you only have to check the application code. On the other hand if the issue is with the database logic, you will only have to check and modify the stored procedure. Another added benefit here is that, if you change the stored procedure there is no need to compile your application code and deploy it. Just modify the stored procedure and you are done. You will loose this benefit if you are composing your dynamic sql statements in client code, as you will have to change the application code if there is a bug. Changing the application code requires compilation, build and deployment. Network traffic : Stored procedures reduce network traffic as only the procedure name and a few parameters need to be sent over the network. With dynamic SQL, you will have to send your entire sql statement over the network. If the query is a complex one, with 50 to 60 lines, imagine the increased network traffic between the client application and the database server. SQL Injection Attacks : Stored procedures prevent SQL injection attacks. In general, dynamic SQL open doors for SQL injection attacks if not careful. However, even with dynamic SQL, we can prevent SQL injection attacks by using parameterised queries. In some cases where you need to pass a table name or a column name as a parameter, it is not possible to use parameterised queries with dynamic sql. In such cases use QUOTENAME() function to prevent SQL injection attacks. Cached query plans reuse : Stored procedures provide increased performance as cached query plans reusability increases. Even with dynamic SQL, if we use parameterised queries, cached query plan reusability increases, which in turn increases the performance. If you are not using parameterised queries, SQL Server auto-parameterisation feature can automatically detect parameter values and create parameterised queries which promotes query plan reusability and in turn performance. One important thing to keep in mind is that, from a performance standpoint OLTP queries benefit from cached query plan reuse. However, with OLAP systems as your data drifts and optimizer choices change, OLAP queries benefit from unique plans, so query plan reuse may not be desirable in this case for performance. Maintenance : With static SQL in a stored procedure, a syntax error is reported immediately so ease of writing is definitely one of the benefits of using a stored procedure. On the other hand if you have dynamic SQL in the stored procedure, and if there is a syntax error you wouldn't know it until you run it. Stored procedures with static SQL are also easy to maintain as you can use sp_depends procedure to check the dependencies on other SQL objects. For example, let's say you have a database with lot of tables, and you want to know if a certain table is referenced, because you are considering changing or dropping it. In this case using sp_depends TableName will let us know if it is referenced anywhere, so we can make changes without breaking anything. On the other hand if you are using dynamic sql in a stored procedure or sending it from a client, you loose this benefit. Implementing flexible logic : Sometimes, with stored procedures it is hard to implement flexible logic compared with dynamic SQL. For example, we want to implement a "Search" stored procedure with 20 or more filters. This stored procedure can get complex. To make things worse what if we want to specify conditions like AND, OR etc between these search filters. The stored procedure can get extremely large, complicated and difficult to maintain. One way to reduce the complexity is by using dynamic SQL. Depending on for which search filters the user has provided the values on the "Search Page", we build the WHERE clause dynamically at runtime, which can reduce complexity.
Views: 15886 kudvenkat
PL/SQL:Exceptions
 
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In this tutorial, you'll learn the difference between compile & run time error and how to handle the exceptions..
Views: 14954 radhikaravikumar
Oracle   joins Part -4 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............
Cast and Convert functions in SQL Server   Part 28
 
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In this video we will learn, converting one data type to another using cast() and convert() functions. We will also learn how to use the style parameter, with convert() function. Finally we will look at a practical example of using CAST or CONVERT functions, along with group by. We will also talk about the differences between CAST and CONVERT functions and when to choose one over the other. Text version of the video http://csharp-video-tutorials.blogspot.com/2012/09/cast-and-convert-functions-in-sql.html Slides http://csharp-video-tutorials.blogspot.com/2013/08/part-28-cast-and-convert-functions.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: 169191 kudvenkat

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