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oracle date and time functions
 
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Video from our Oracle SQL course. Check out the full course at.. http://learn.hackpress.co/courses/oracle-sql-learning-by-example
Views: 42413 etldeveloper
12. DATE, DATATIME and TIMESTAMP Data Type in SQL (Hindi)
 
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Please Subscribe Channel Like, Share and Comment Visit : www.geekyshows.com
Views: 25160 Geeky Shows
Oracle SQL: Exploring Date Functions
 
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http://www.informit.com/store/oracle-sql-livelessons-video-training-downloadable-9780134275741?WT.mc_id=Social_YT Oracle SQL: Exploring Date Functions is an excerpt from Oracle SQL LiveLessons Video Training -- 6+ Hours of Video -- Oracle SQL LiveLessons Video Training covers the basics of the Oracle SQL programming language. This course covers both Oracle standard SQL and the ANSI approved SQL that Oracle supports. The focus of the course is to give students working knowledge of the Oracle SQL language and at the conclusion of this course, students should be able to query the Oracle database. Description In this LiveLessons video course, Oracle ACE Director Dan Hotka will teach you how to use the SQL query language, interpret business questions into SQL code, and how to use Where clauses sub-queries, complex table join conditions, and how to create table objects and populate tables with data. Students will also learn how to access Oracle from Microsoft products such as Excel. In addition, they will learn how analytical SQL can be used for business analysis. This course will use both Toad and SQL Developer for SQL examples. About the Instructor Dan Hotka is a training specialist and an Oracle ACE director who has more than 37 years in the computer industry and more than 31 years of experience with Oracle products. His experience with the Oracle RDBMS dates back to the Oracle V4.0 days. Dan enjoys sharing his knowledge of the Oracle RDBMS. Dan is well published with 12 Oracle books and well over 200 published articles. He is also the video author for Oracle SQL Performance Tuning for Developers LiveLessons and Oracle PL/SQL Programming Fundamentals. He is frequently published in Oracle trade journals, regularly blogs, and speaks at Oracle conferences and user groups around the world. Visit his website at www.DanHotka.com. Skill Level Beginner Learn How To Use the SQL query language Interpret business questions into SQL code Understand Oracle standard SQL and ANSI SQL Work with Where clauses, sub-queries, and complex table join conditions Create table objects and populate these tables with data Access Oracle from Microsoft products such as Excel Use analytical SQL, useful for business analysts Who Should Take This Course Students who are new to SQL and want to learn Oracle SQL Course Requirements Basic knowledge of what is a database, especially RDBMS and what is a computer programming language http://www.informit.com/store/oracle-sql-livelessons-video-training-downloadable-9780134275741?WT.mc_id=Social_YT
Views: 4668 LiveLessons
SQL Date Comparison - How to filter Datetime in SQL Server - SQL Training Online
 
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http://www.sqltrainingonline.com SQL Date Comparison - How to filter Datetime in SQL Server - SQL Training Online In this video, I show you how to do a SQL Date Comparison in SQL Server when your Datetime has an actual time in it. I also include the latest trick that will make this easier if you are using SQL Server 2008 or SQL Server 2012. How do you compare a Datetime in SQL Server? A SQL Datetime stores both Date and Time. So when you are filtering using the SQL Where clause, you have to know if you Datetime is storing the time also. Let's take a look at the employee table in SQL Training Online Simple DB The column we are looking at is the hire date. I want to go after the person who was hired on February, 22 2005. So, I use the following SQL. select * from employee where hire_date='02/22/2005' Now, this works because we don't have any times stored in this column. But, if I change the record from 2005-02-22 00:00:00.000 to 2005-02-22 08:22:25.000 and rerun the query, you see that I don't get any results. That is because the value of 02/22/2005 is really 2005-02-22 00:00:00.000 and I just changed the hire_date to include a time other than 00:00:00.000. So, I have to tweak my query to use a greater than and less than sign. This works. But, to really understand what is going on, let me show you what SQL Server really sees. There are other ways, and in this StackOverflow article you can read more about these other ways. But, I want to point out a few. If you are working in SQL Server 2005 or earlier, the following is supposed to be the fastest performing way to do this. select datediff(dd,0, hire_date),* from employee where dateadd(dd,0, datediff(dd,0, hire_date)) = '2005-02-22' But, if you are working in SQL Server 2008 or SQL Server 2012, they have introduced an actual Date datatype that doesn't include the Time portion. Since this is the case, you can use the CAST function to remove the time from the Datetime. Here is the SQL to do that. select * from employee where CAST(hire_date AS Date) = '2005-02-22' And that's it. If you enjoy the video, please give it a like, comment, or subscribe to my channel. You can visit me at any of the following: SQL Training Online: http://www.sqltrainingonline.com Twitter: http://www.twitter.com/sql_by_joey Google+: https://plus.google.com/#100925239624117719658/posts LinkedIn: http://www.linkedin.com/in/joeyblue Facebook: http://www.facebook.com/sqltrainingonline
Views: 26563 Joey Blue
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: 5200 Subhroneel Ganguly
Oracle SQL TUTORIAL – Date columns with Time in Where condition
 
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In this video, we will see how to retrieve records for a specific time duration. SQLs used in this video are given below. select * from employees; alter session set nls_date_format = 'DD-MON-YYYY HH24:MI:SS'; SELECT DBMS_RANDOM.VALUE(0,9) FROM DUAL; SELECT SYSDATE-DBMS_RANDOM.VALUE(0,9) FROM DUAL; SELECT FIRST_NAME,LAST_NAME, SYSDATE-DBMS_RANDOM.VALUE(0,9) CREATED_DATE FROM EMPLOYEES; CREATE TABLE EMP_TEST AS SELECT FIRST_NAME,LAST_NAME, SYSDATE-DBMS_RANDOM.VALUE(0,9) CREATED_DATE FROM EMPLOYEES; SELECT * FROM EMP_TEST ORDER BY CREATED_DATE DESC; select sysdate from dual; select sysdate,trunc(sysdate) from dual; 26 sep 2018 00:00:00 to 26 sep 2018 23:59:59 select sysdate,trunc(sysdate),trunc(sysdate)+0.99999 from dual; Records that got created yesterday.. 25 sep 2018 00:00:00 to 25 sep 2018 23:59:59 select trunc(sysdate-1),trunc(sysdate-1)+0.99999 from dual; SELECT * FROM emp_test WHERE created_date BETWEEN trunc(SYSDATE-1) AND trunc(SYSDATE-1)+0.99999 order by created_date; Retrieve records for 22nd Septembter 2018 SELECT * FROM emp_test WHERE created_date BETWEEN to_date('22-sep-2018 00:00:00','dd-mon-yyyy hh24:mi:ss') AND to_date('22-sep-2018 23:59:59','dd-mon-yyyy hh24:mi:ss') order by created_date; SELECT * FROM emp_test WHERE created_date BETWEEN to_date('22-sep-2018','dd-mon-yyyy') AND to_date('22-sep-2018 23:59:59','dd-mon-yyyy hh24:mi:ss') order by created_date; -- Get all records created in last 24 hours select sysdate,sysdate-1 from dual; SELECT * FROM emp_test where created_date between sysdate-1 and sysdate order by created_date;
Views: 22 Ganesh Anbarasu
Oracle || Date functions Part-1 by dinesh
 
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Query for employee who hired before 15th of every month in date
 
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Hello friends in SQL language you can write a query for employee who hired before 15th of every month in date easily. Oracle database Unbeatable,Unbreakable Platform..
Views: 2239 Oracle World
SQL Tutorial - SQL DATE Functions like GETDATE, DATEADD, CONVERT
 
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http://www.learningsqlserver2008.com/ https://youtu.be/KmsmPOImpHo - Date functions in SQL Server 2012 GETDATE -- Today's date DATEADD - adding time interval to an existing Date DATEPART - return part of the date like year or month DATEDIFF - Give you the different between two dates DAY - returns the day of the month MONTH - return the Month of the Year YEAR - returns the year in the Sql expression CAST - Converts an expression of one data type to another in SQL Server 2008 R2 CONVERT - Convert expressions of one data type to another in sql server r2 SQL Tutorial
Views: 55615 baghul
MySQL 33 - Datetime, Date, Time Data Types
 
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Next up on our MySQL to-do list is to learn about storing dates and times. There are various data types in MySQL for storing dates and times. It seems MySQL and databases likes to break everything up into multiple data types to make things more organized at the consequence of being confusing and annoying. This video is going to be talking about the DATETIME, DATE, and TIME data types. These are all used to store, you guessed it, dates and times. The one you choose depends on your needs. If you just need dates, choose DATE. If you just need times, choose TIME, if you need both stored together, choose DATETIME. Now you set a column one of these data types whenever you want every row for this field to have some sort of date, time or both…but how exactly is the data formatted? This requires us to understand some convention. For example, in the USA at least, if you have something like 4:30AM, by convention you know the hour is 4 and the minutes are 30. But this is just an agreed upon convention. MySQL has its own convention…For example 2017-02-02. The first thing is the year, the second is the month, and the third is the day. That is for the DATE. The convention for time is 22:54:30. The first is the hour (military time), the second is the minute, and the third is the seconds. Lastly, there can actually be fractions of seconds…up to microseconds! .123456. To use fractional seconds though you must specify to MySQL the precision of the TIME or DATETIME when you create it, for example DATETIME(6) would allow microsecond precision. How do you actually give a date to MySQL? By that I mean let's say you have a table with a column of DATETIME(6), and you want to give a value for that column, how do you format it? It's quoted. For example: '2017-02-02 22:54:30.333333' MySQL interprets this as a DATETIME. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Support me! http://www.patreon.com/calebcurry Subscribe to my newsletter: http://bit.ly/JoinCCNewsletter Donate!: http://bit.ly/DonateCTVM2. ~~~~~~~~~~~~~~~Additional Links~~~~~~~~~~~~~~~ More content: http://CalebCurry.com Facebook: http://www.facebook.com/CalebTheVideoMaker Google+: https://plus.google.com/+CalebTheVideoMaker2 Twitter: http://twitter.com/calebCurry Amazing Web Hosting - http://bit.ly/ccbluehost (The best web hosting for a cheap price!)
Views: 29595 Caleb Curry
TO_CHAR(datetime) Function in SQL Query
 
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TO_CHAR (datetime) : TO_CHAR (datetime) converts a datetime datatype to a value of VARCHAR2 datatype in the format specified by the date format. The following is a list of valid parameters when the TO_CHAR function is used to convert a date to a string. These parameters can be used in many combinations. YEAR Year, spelled out YYYY 4-digit year YYY Last 3 digits of year. YY Last 2 digits of year. Y Last 1 digit of year. IYYY 4-digit year based on the ISO standard Q Quarter of year (1, 2, 3, 4; JAN-MAR = 1). MM Month (01-12; JAN = 01). MON Abbreviated name of month. MONTH Name of month, padded with blanks to length of 9 characters. RM Roman numeral month (I-XII; JAN = I). WW Week of year (1-53) where week 1 starts on the first day of the year and continues to the seventh day of the year. W Week of month (1-5) where week 1 starts on the first day of the month and ends on the seventh. IW Week of year (1-52 or 1-53) based on the ISO standard. D Day of week (1-7). DAY Name of day. DD Day of month (1-31). DDD Day of year (1-366). DY Abbreviated name of day. J Julian day; the number of days since January 1, 4712 BC. HH Hour of day (1-12). HH12 Hour of day (1-12). HH24 Hour of day (0-23). MI Minute (0-59). SS Second (0-59). SSSSS Seconds past midnight (0-86399). FF Fractional seconds. Thanks for watching...:)
Views: 9962 WingsOfTechnology
SPOOL BY CURRENT DATE (SYSDATE) IN ORACLE
 
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SPOOL BY USING SYSDATE IN ORACLE
Views: 430 Rinku Kumar Singh
How to use tricky things with SYSDATE
 
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How to use tricky things with SYSDATE like how to know the next day, next hour, next minuite etc.,
Views: 1072 Techie Rajesh
Oracle TO_DATE Function Explained with Examples
 
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https://www.databasestar.com/oracle-to_date/ The Oracle TO_DATE function is one of the most useful conversion functions in Oracle. It can be a little confusing though. The TO_DATE function is used to convert a character value to a date value. You can use it to convert a string that is in the format of a date, into a date data type. Why would you use this? Converting a character to a date is helpful if you want to insert a date into a column in a table. Being specific about the format (explicit) is better than assuming the conversion will be done for you (implicit). This TO_DATE function only converts to a DATE data type. If you want to convert to the other datetime data types, you’ll have to use other functions such as TO_TIMESTAMP or TO_TIMESTAMP_TZ. The syntax for this function is: TO_DATE(charvalue [, format_mask [, nls_date_language]]) The parameters for this function are: Charvalue: This is the character value that you want to convert to a date. It’s the main input of the function. Format_mask: This is the format that the input value, the charvalue, is in. This is used to help convert your character value into a date, as your character may be in a different format to the default. Nls_date_language: this is used to determine how the output is displayed. For more information about the Oracle TO_DATE function, including all of the SQL shown in this video and the examples, read the related article here: https://www.databasestar.com/oracle-to_date/
Views: 733 Database Star
Oracle - SQL - Date Functions
 
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Oracle - SQL - Date Functions Watch more Videos at https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Anadi Sharma, Tutorials Point India Private Limited.
ORACLE SQL 22: SYSDATE
 
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http://studyandshare.wordpress.com/ http://www.facebook.com/groups/studyandsharevn/
Views: 1427 studyandsharevn
DATE FUNCTION in oracle
 
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Views: 472 Adam Tech
SQL,  How to insert date data type, lesson 14
 
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14th video of the series, learning structured Query Language. How to insert date data type into a column. Using oracle platform.
Views: 40978 hammadshams
Learn Oracle | How to use the Character Functions, Date Functions in SQL
 
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Pebbles present, Learn Oracle 10g with Step By Step Video Tutorials. Learn Oracle 10g Tutorial series contains the following videos : Learn Oracle - History of Oracle Learn Oracle - What is Oracle - Why do we need Oracle Learn Oracle - What is a Database Learn Oracle - What is Grid Computing Learn Oracle - What is Normalization Learn Oracle - What is ORDBMS Learn Oracle - What is RDBMS Learn Oracle - Alias Names, Concatenation, Distinct Keyword Learn Oracle - Controlling and Managing User Access (Data Control Language) Learn Oracle - Introduction to SQL Learn Oracle - Oracle 10g New Data Types Learn Oracle - How to Alter a Table using SQL Learn Oracle - How to Create a Package in PL SQL Learn Oracle - How to Create a Report in SQL Plus Learn Oracle - How to Create a Table using SQL - Not Null, Unique Key, Primary Key Learn Oracle - How to Create a Table using SQL Learn Oracle - How to Create a Trigger in PL SQL Learn Oracle - How to Delete Data from a Table using SQL Learn Oracle - How to Drop and Truncate a Table using SQL Learn Oracle - How to Insert Data in a Table using SQL Learn Oracle - How to open ISQL Plus for the first time Learn Oracle - How to Open SQL Plus for the First Time Learn Oracle - How to Update a Table using SQL Learn Oracle - How to use Aggregate Functions in SQL Learn Oracle - How to use Functions in PL SQL Learn Oracle - How to use Group By, Having Clause in SQL Learn Oracle - How to Use Joins, Cross Join, Cartesian Product in SQL Learn Oracle - How to use Outer Joins (Left, Right, Full) in SQL Learn Oracle - How to use the Character Functions, Date Functions in SQL Learn Oracle - How to use the Merge Statement in SQL Learn Oracle - How to use the ORDER BY Clause with the Select Statement Learn Oracle - How to use the SELECT Statement Learn Oracle - How to use the Transactional Control Statements in SQL Learn Oracle - How to use PL SQL Learn Oracle - Data Types in PL SQL Learn Oracle - Exception Handling in PL SQL Learn Oracle - PL SQL Conditional Logics Learn Oracle - PL SQL Cursor Types - Explicit Cursor, Implicit Cursor Learn Oracle - PL SQL Loops Learn Oracle - Procedure Creation in PL SQL Learn Oracle - Select Statement with WHERE Cause Learn Oracle - SQL Operators and their Precedence Learn Oracle - Using Case Function, Decode Function in SQL Learn Oracle - Using Logical Operators in the WHERE Clause of the Select Statement Learn Oracle - Using Rollup Function, Cube Function Learn Oracle - Using Set Operators in SQL Learn Oracle - What are the Different SQL Data Types Learn Oracle - What are the different types of Databases Visit Pebbles Official Website - http://www.pebbles.in Subscribe to our Channel – https://www.youtube.com/channel/UCNNjWVsQqaMYccY044vtHJw?sub_confirmation=1 Engage with us on Facebook at https://www.facebook.com/PebblesChennai Please Like, Share, Comment & Subscribe
Views: 2016 Pebbles Tutorials
2 13 SYSDATE vs CURRENT DATE
 
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Oracle SQL SYSDATE vs CURRENT_DATE
Views: 308 Mahesh Peiris
DateTime functions in SQL Server   Part 25
 
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In this video we will learn about different DateTime data types, and different date time functions in sql server. We will also understand the difference between terms UTC (Coordinated Universal Time) and Time Zone offset. Text version of the video http://csharp-video-tutorials.blogspot.co.uk/2012/09/datetime-functions-in-sql-server-part-25.html Slides http://csharp-video-tutorials.blogspot.com/2013/08/part-25-datetime-functions-in-sql-server.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: 193650 kudvenkat
Oracle TO_TIMESTAMP Function
 
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https://www.databasestar.com/oracle-to_timestamp/ The Oracle TO_TIMESTAMP function can be confusing, but we’ll explain it in this video. This function allows you to convert a string value into a TIMESTAMP value. A TIMESTAMP value is a type of DATE, but has a few components: - A date, including day, month, and year - A time, including hours, minutes, seconds, and fractional seconds This is a useful data type because it allows you to store a time down to fractions of a second. The syntax of the TO_TIMESTAMP function is: TO_TIMESTAMP ( input_string [, format_mask] [, nls_param] ) The input_string parameter is the string you want to convert. The format_mask is where you specify the format of the input_string parameter. This is so you can specify the input_string in a variety of formats, and just use this format_mask to indicate which format it is in. The nls_param parameter is another optional parameter, and allows you to specify the returning language of the month and day names. The default format will depend on the region you’re running your database in. In my example (using Oracle Express in Australia), the default format is ‘DD-MM-RRRR HH:MI:SS AM’. For more information on the Oracle TO_TIMESTAMP function, including the SQL used in this video, read the related article here: https://www.databasestar.com/oracle-to_timestamp/
Views: 302 Database Star
SQL 014 SELECT DATE, TIME and TIMESTAMP
 
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Explains an overview of SQL DATE, TIME and TIMESTAMP. From http://ComputerBasedTrainingInc.com SQL Course. Learn by doing SQL commands for ANSI Standard SQL, Access, DB2, MySQL, Oracle, PostgreSQL, and SQL Server.
Views: 5148 cbtinc
Get Date and Time From Current DateTime - SQL in Sixty Seconds #025
 
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A very common question is how to get the current datetime in SQL Server. The most obvious question which is asked as a follow up to an earlier question is how to find only date or only time from current datetime in SQL Server. This sixty second video describes the same. For the script demonstrated in this video and for further learning go to: http://bit.ly/RDukOu
Views: 30172 Pinal Dave
Date and Time in Oracle In Telugu
 
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#KOTHA_ABHISHEK http://htmlintelugu1.blogspot.com http://cssintelugu1.blogspot.com http://javascriptintelugu1.blogspot.com http://sqlintelugu1.blogspot.com http://javaintelugu1.blogspot.com
Views: 925 KOTHA ABHISHEK
Date Time Handiling Using To_Date and To_Char (Oracle)
 
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Date Time Handling Using To_Date and To_Char (Oracle) Discussion on an Interview question Useful Links: http://docs.oracle.com/cd/B19306_01/server.102/b14200/functions183.htm https://www.techonthenet.com/oracle/functions/to_date.php
Views: 2661 CodeSmith 001
Date and Time Formats
 
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Date and Time formats when retrieving and inserting date into DATE datatype
Views: 391 Hemant K Chitale
38. Date Functions - Add_Months, Last_Day, Months_Between, Next_Day, To_Date, New_Time in Oracle
 
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In this video you will learn about Date Functions { Add_Months(), Last_Day(), Months_Between(), Next_Day(), To_Date(), New_Time() } in Oracle. Unlike other programming language Oracle also uses functions to perform common operations. For Support =========== Email: [email protected] Contact Form: http://www.learninhindi.com/home/contact Our Social Media ================ Facebook: https://www.facebook.com/LearnInHindi Twitter: https://twitter.com/LearnInHindi For Training & Videos ===================== For more videos and articles visit: http://www.learninhindi.com Free Java Programming In Hindi Course ===================================== https://www.youtube.com/playlist?list=PLOZ3jentlCDAwwhMyoLISrxkXTADGp7PH Free Oracle PL/SQL Programming In Hindi Course ============================================== https://www.youtube.com/playlist?list=PLB5DA82419C2D99B6 Free C Programming In Hindi Course ================================== https://www.youtube.com/playlist?list=PLOZ3jentlCDAxKpBLMWogxSdy6BZcsAJq Trips & Tricks Channel ====================== https://www.youtube.com/channel/UCGmLfkuCo-3lHHJXRJ9HUMw Programming in Hindi Channel ============================ https://www.youtube.com/channel/UCudElIDgwNrybeAvXIy1HZQ
Views: 18630 ITORIAN
Custom date time format in Oracle SQL Developer?
 
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From Oracle SQL Developer's menu go to Tools -- Preferences. From the Preferences dialog, select Database -- NLS from the left panel. From the list of NLS parameters, enter DD-MON-RR HH24:MI:SS or for 24-Hour, DD-MON-YY HH24:MI:SS Or just for an active session use below instead. alter SESSION set NLS_DATE_FORMAT = 'required_date_format' i.e. alter SESSION set NLS_DATE_FORMAT = 'DD-MM-YYYY HH24:MI:SS' into the Date Format field. Save and close the dialog.
Views: 413 Maruti AIR Tech
113- Oracle SQL 12c: Managing Data in Different Time Zones 1
 
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EXAM 1Z0-061 EXAM 1Z0-071 •Time Zones. •Timestamp Data type •timestamp with time zone •timestamp with local time zone •V$TIMEZONE_NAMES •DBTIMEZONE •SESSIONTIMEZONE •current_date •current_timestamp •Localtimestamp •alter session set time_zone •Extract expression •TZ_OFFSET •from_tz •to_timestamp •to_yminterval •to_dsinterval
Views: 1480 khaled alkhudari
Date functions in PostgreSQL , Time functions in PostgreSQL
 
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Video talks about Date functions in PostgreSQL Time functions in PostgreSQL Also part of functions in PostgreSQL PostgreSQL date functions PostgreSQL tutorial videos PostgreSQL training videos
Views: 1832 Training2SQL MSBI
Part 20   Using ROWVERSION or TIMESTAMP to detect concurrency conflicts
 
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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/2014/10/part-20-using-rowversion-or-timestamp.html This is continuation to Part 19. Please watch Part 19 before proceeding. In this video we will discuss how to use ROWVERSION or TIMESTAMP columns to detect concurrency conflicts in linq to sql. Let us understand this with an example. By default LINQ to SQL uses all the columns of the table in the WHERE clause to detect concurrency conflicts. The query would look as shown below. exec sp_executesql N'UPDATE [dbo].[Accounts] SET [AccountBalance] = @p3 WHERE ([AccountNumber] = @p0) AND ([AccountName] = @p1) AND ([AccountBalance] = @p2)', N'@p0 int,@p1 nvarchar(4000),@p2 int,@p3 int',@p0=1,@p1=N'John Mary',@p2=1000,@p3=1500 This is OK if we have a few columns in the table. In real time applications we may have tables with large number of columns. For example, what if the table has 30 columns. The WHERE clause would be huge and it can impact the performance of the application. In situations like this we can use ROWVERSION or TIMESTAMP columns. Here are the steps Step 1 : Add a Version column to the Accounts table. The datatype of the column must be either ROWVERSION or TIMESTAMP. The value for this column is automatically generated by the database if the row gets changed. So this column can alone be used to detect concurrency conflicts. ALTER TABLE Accounts ADD [Version] ROWVERSION Step 2 : In Visual Studio, delete the Account Entity from the Sample.dbml file Step 3 : In Server Explorer window in Visual Studio, right click on Accounts table and select "Refresh". Step 4 : Drag and drop Accounts table on the Designer surface of Sample.dbml file. Notice that a Version Property is automatically added. Navigate to Sample.Designer.cs file and look at the code generated for this property. Notice that IsVersion & IsDbGenerated properties are set to true. [global::System.Data.Linq.Mapping.ColumnAttribute(Storage="_Version", AutoSync=AutoSync.Always, DbType="rowversion NOT NULL", CanBeNull=false, IsDbGenerated=true, IsVersion=true, UpdateCheck=UpdateCheck.Never)] public System.Data.Linq.Binary Version { get { return this._Version; } set { if ((this._Version != value)) { this.OnVersionChanging(value); this.SendPropertyChanging(); this._Version = value; this.SendPropertyChanged("Version"); this.OnVersionChanged(); } } } Testing for concurrency conflicts : Let's now simulate the scenario of 2 users updating the same record at the same time. To do this Step 1 : Throw a break point on the line where we call db.SubmitChanges(); in btnDeposit_Click() method. Step 2 : Run the application in Debug mode, and click "Deposit $500" button. The execution should stop on SubmitChanges() method. Step 3 : At this point open SQL Server Management Studio. a) Execute the following SELECT query Select * from Accounts where AccountNumber = 1 b) Notice the Value of Version column c) Execute the following UPDATE query Update Accounts set AccountBalance = AccountBalance - 300 Where AccountNumber = 1 d) Now notice that the Value of Version column is automatically changed to a new value Step 4 : Open SQL Profiler and run a new trace. Step 5 : Now come back to Visual Studio and press F5 to continue the execution. Notice that "ChangeConflictException" is thrown as expected. Step 6 : In SQL Profiler notice that the UPDATE query that is generated has used Version column in the WHERE clause to detect concurrency conflicts. exec sp_executesql N'UPDATE [dbo].[Accounts] SET [AccountBalance] = @p2 WHERE ([AccountNumber] = @p0) AND ([Version] = @p1) SELECT [t1].[Version] FROM [dbo].[Accounts] AS [t1] WHERE ((@@ROWCOUNT) ] 0) AND ([t1].[AccountNumber] = @p3)', N'@p0 int,@p1 timestamp,@p2 int,@p3 int',@p0=1,@p1=0x0000000000002715,@p2=1500,@p3=1
Views: 15363 kudvenkat
SQL Tutorial - 45: Date & Time Functions (Part-1)
 
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In this tutorial we'll see how we can add dates, subtract dates, view current date and current time using ADDDATE(), SUBDATE(), CURDATE() and CURTIME Functions respectively.
Views: 33469 The Bad Tutorials
Oracle SQL Video Tutorial 18 - Working with DATE functions
 
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Oracle SQL Video Tutorials 18 - Working with DATE functions explained
Views: 4872 Just Channel
Oracle TO_TIMESTAMP_TZ Function
 
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https://www.databasestar.com/oracle-timezone-functions/ The Oracle TO_TIMESTAMP_TZ function can be confusing, but we’ll explain it in this video. This function allows you to convert a string value into a TIMESTAMP WITH TIME ZONE value. A TIMESTAMP WITH TIME ZONE value is a type of DATE, but has a few components: - A date, including day, month, and year - A time, including hours, minutes, and seconds - A time zone, which is the number of hours and minutes difference from GMT This is a useful data type because it allows you to store dates in different time zones, and allow users in other time zones to see the data in a way that makes sense to them. The time zone part is the difference from GMT. This means that a “+7:00” is 7 hours ahead of GMT (e.g. Bangkok) and “-5:00” is 5 hours behind GMT (e.g. US Eastern Standard Time). The syntax of the TO_TIMESTAMP_TZ function is: TO_TIMESTAMP_TZ ( input_string [, format_mask] [, nls_param] ) The input_string parameter is the string you want to convert. The format_mask is where you specify the format of the input_string parameter. This is so you can specify the input_string in a variety of formats, and just use this format_mask to indicate which format it is in. The nls_param parameter is another optional parameter, and allows you to specify the returning language of the month and day names. For more information on the Oracle TO_TIMESTAMP_TZ function, including the SQL used in this video, read the related article here: https://www.databasestar.com/oracle-timezone-functions/
Views: 75 Database Star
Learn MySQL In Arabic #06 - Data Type - Date & Time
 
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Learn MySQL Data & Time Data Type with examples Date Datetime TimeStamp Time Year
Views: 12478 Elzero Web School
37. Conversion Functions To Char, To Date, NVL, Decode in PL/SQL Oracle
 
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In this video you will learn about Conversion Functions To Char, To Date, NVL, Decode in PL/SQL Oracle. For Support =========== Email: [email protected] Contact Form: http://www.learninhindi.com/home/contact Our Social Media ================ Facebook: https://www.facebook.com/LearnInHindi Twitter: https://twitter.com/LearnInHindi For Training & Videos ===================== For more videos and articles visit: http://www.learninhindi.com Free Java Programming In Hindi Course ===================================== https://www.youtube.com/playlist?list=PLOZ3jentlCDAwwhMyoLISrxkXTADGp7PH Free Oracle PL/SQL Programming In Hindi Course ============================================== https://www.youtube.com/playlist?list=PLB5DA82419C2D99B6 Free C Programming In Hindi Course ================================== https://www.youtube.com/playlist?list=PLOZ3jentlCDAxKpBLMWogxSdy6BZcsAJq Trips & Tricks Channel ====================== https://www.youtube.com/channel/UCGmLfkuCo-3lHHJXRJ9HUMw Programming in Hindi Channel ============================ https://www.youtube.com/channel/UCudElIDgwNrybeAvXIy1HZQ
Views: 8540 ITORIAN
Oracle Core, Лекция 5
 
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Ссылка на файл с презентацией: https://docs.google.com/presentation/d/1xANFkC3tkFdby_HIFEEwtqInJqKlgx4ykiIbarK1EPE/edit?usp=sharing (презентация может быть с анимацией) Ссылка на краткий конспект лекции: https://docs.google.com/document/d/1x80R-XlWBI_zFzNN2JMmby2wIvBb7jnfshn9axNXEKs/edit?usp=sharing 1. Общие сведения, история возникновения PL/SQL 2. Среда исполнения 3. Структура PL/SQL блока (declare, begin, exception, end). Именованные/неименованные (анонимные) блоки pl/sql. Вложенные блоки pl/sql 4. Набор разрешенных символов. Требования к именованию идентификаторов. Представление v$reserved_words 5. Арифметические операторы. Логические операторы отношения. 6. Комментарии и метки 7. Основные типы и структуры данных (скалярный, составной, ссылка, lob) 8. Значение null 9. Числовые типы: Number, Number(n), Number(n, m), Pls_Integer/Binary_Integer, Binary_Float, Binary_Double, Natural, Naturaln, Positive, Positiven, Signtype, Simple_Integer, Simple_Float, Simple_Double) 10. Строковые типы: Char, Varchar2, NChar, NVarchar2, Raw, Long, Long Raw 11. Rowid и Urowid 12. Операции со строками. Взаимодействие строк со значением Null 13. Типы для моментов и интервалов времени: Date, Timestamp, Interval. Возможные операции 14. Тип Boolean 15. Типы Lob: BFile, BLob, CLob, NCLob 16. Объявление переменных и констант 17. Составные и динамические типы: Record, %RowType, %Type 18. Пользовательские подтипы Subtype 19. Выражения 20. Функции для работы с NULL: Decode, Nvl, Nvl2, Coalesce 21. Преобразование типов явное и неявное. 22. Таблица неявного преобразования типов. 23. Таблица явного преобразования типов 24. Основные управляющие структуры 25. Конструкция IF...THEN..ELSIF...ELSE 26. Конструкция выбора по условию CASE (простой и с поиском) 27. Циклы Loop... end loop, While loop, For loop, цикл по курсору 28. Оператор Goto Oracle Database, БД Oracle, вебинар Oracle, презентация Oracle, урок Oracle, лекция Oracle, обучение Oracle
Oracle SQL Select Part_2
 
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Oracle SQL Select Part_2
Views: 35 Engin Kosova
Range Partitioning in Oracle
 
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In this video I have explained what is range partitioning along with it's 2 real project use cases. I have also explained interval Partitioning as an extension of Range partitioning If you have not watched my Initial Videos on partitioning I will recommended watching them before watching this video Apologies for the 10 second video glitch between 6 and 7 minutes :(
Views: 3338 Tech Coach
Oracle ADD_MONTHS Function
 
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https://www.databasestar.com/oracle-add_months/ The Oracle ADD_MONTHS allows you to add a specified number of months to a date value, and return the new date value. It’s great for performing calculations on dates, or date arithmetic, which can be hard in many different programming languages. The syntax of the ADD_MONTHS function is: ADD_MONTHS ( input_date, number_months ) The function returns a DATE value. The parameters of this function are: - input_date (mandatory): This is the starting date, or the date that you will add a number of months to. - number_months (mandatory): This is an integer value that represents the number of months to add to input_date. The input_date can be any datetime value, or even a character value that can be converted to a date. Also, the number_months can be any number value, or a character value that can be converted to a number. What if the number of days in the two months are different? For example, adding a month to Jan 31 could result in Feb 31, which does not exist. Well, in this case, Oracle would work out that the date does not exist, and use the last date of the month (e.g. Feb 28). You can also provide a negative value for ADD_MONTHS to subtract months from the specified date. For more information about the Oracle ADD_MONTHS function, including all of the SQL shown in this video and the examples, read the related article here: https://www.databasestar.com/oracle-add_months/
Views: 359 Database Star
How To Using Date Fomat In SQL Server
 
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This video for the SQL Programmer beginner only it will show you how to using date format in SQL Server
Views: 10354 Sourn Sarim
SQL 052 Data Types, Date, Time and Timestamp Data, Compare Database Usage
 
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Explains the Date, Time and Timestamp data with a comparison of usage by the major databases. From http://ComputerBasedTrainingInc.com SQL Course. Learn by doing SQL commands for ANSI Standard SQL, Access, DB2, MySQL, Oracle, PostgreSQL, and SQL Server.
Views: 2392 cbtinc
ADD DATE COLUMN DATATYPE, INSERT DATE VALUES in Oracle SQL
 
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Oracle SQL tutorials, How to add date datatype, insert date datatype values
Oracle DBTIMEZONE Function
 
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https://www.databasestar.com/oracle-timezone-functions/ The Oracle DBTIMEZONE function returns the database timezone offset of the database. It returns it in the format of +/- TZH:TZM, or the time zone region name. It’s useful to know what timezone the database is in when working with dates and different time zones, as it can impact the queries you write. The syntax for this function is quite simple: DBTIMEZONE There are no parameters - just the function name. You can’t actually change the timezone of the database using this function. It uses the timezone of the operating system of the server the database runs on. It’s similar to the SESSIONTIMEZONE function, but that function returns the timezone of your session and not the database server. It’s also similar to the SYSTIMESTAMP function, but that function returns the date, time, and timezone of the database, where DBTIMEZONE just returns the timezone. For more information about the Oracle DBTIMEZONE 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: 80 Database Star
Overview of SQL Server Data Types: Time Zone Aware Dates
 
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This video is part of LearnItFirst's Transact-SQL Programming: SQL Server 2008/R2 course. More information on this video and course is available here: http://www.learnitfirst.com/Course161 In the last video, you looked at a mixture of old and new temporal data types. In this video, Scott focuses on DATETIME2 and DATETIMEOFFSET. He will start by reviewing some date/time commands and introducing some new ones, and you will see some important things to keep in mind when using a DATETIMEOFFSET data type. What is the disadvantage of using the DATEADD function instead of the SWITCHOFFSET function? Highlights from this video: - What command returns the UTC date? - The SYSDATETIME function - What is the advantage of using DATETIME2? - How do you get a time zone aware version of DATETIME2? - Changing the time zone and much more...
Views: 5403 LearnItFirst.com

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