TRIM Function In Oracle | Character Manipulation |Single Row Functions | Oracle Tutorial for Beginners TRIM in oracle with example TRIM examples Oracle Database Tutorial for Beginners Oracle Tutorial Oracle SQL TRIM() Functions Oracle TRIM SQL TRIM Functions LTRIM Function in SQL LTRIM Function in Oracle RTRIM Function in SQL RTRIM FUnction in Oracle oracle trim multiple characters ltrim function in oracle oracle substring function How to remove space in Oracle String LTRIM and RTRIM in SQL LTRIM and RTRIM in Oracle oracle remove spaces how to remove space in oracle column oracle rtrim trim function in oracle stack overflow ltrim and rtrim in oracle ltrim and rtrim in oracle oracle trim function oracle substring function ltrim sql oracle string functions lpad oracle sql ltrim characters from string
Views: 365 Oracle PL/SQL World
executed in oracle database 11g version 2
Views: 174 Education 4u
SELECT "Hello World" FROM DUAL The first thing you should know about writing queries is that this SQL is not whitespace sensitive. That means we can space this out however we wish. The only requirement is that you do not separate keywords out with spaces. They must be as one entity. Another gotcha is that when you are inside of quotes, whitespace becomes very important. That means if inside of a string you put a character and then 10 spaces, every single one of those spaces is going to part of that string: SELECT "Hello World" FROM DUAL The next thing you should notice is the capitalization. When we type SQL, by convention we capitalize all keywords. I personally really like this because you can easily see the difference between keywords and words that we created or use. But obviously we could capitalize the letters in the quotes. Keep in mind that this is a convention, meaning you do not have to follow this. Oracle is also case insensitive in that SELECT and select both do the same thing. Strings, once again, care about casing. Take this, for example: SELECT 'true' FROM DUALWHERE 'Hello' = 'Hello' And compare the results to this: SELECT 'true' FROM DUALWHERE 'Hello' = 'hello' Only the first one outputs the value true. Once we get into creating database objects such as tables with columns, those are not case sensitive either. That means instead of selecting from DUAL, you can select from DuAl Finally, I shall introduce you to comments. Comments allow you to tell the database engine that you want it to ignore a certain part of your code and not execute it. This is helpful if you want to document your code. It is also useful if you want to have multiple SQL statements open in one tab, but don't want to hover over the one you want to execute. You can comment out the ones you are not using and uncomment them when you are done. Using – will comment out the rest of the line, Using /* */ will comment everything between. This can even be used over multiple lines. But now, let's move onto the important stuff… CREATING TABLES!!!!! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ HELP 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: 17909 Caleb Curry
This video talks about SQL Trim Functions Remove extra space in SQL SQL LTRIM RTRIM in sql trim in sql sql trim ltrim in sql extra space removal in sql sql extra space removal sql space removal sql trims
Views: 376 Training2SQL MSBI
https://www.databasestar.com/oracle-trim/ The Oracle RTRIM function allows you to remove a specific character from the right side of a string. It’s one of the most commonly used string manipulation functions in SQL, in my experience. The “R” in “RTRIM” stands for “right”. It’s often used to remove spaces from the right of a string. However it can be used to remove other characters, such as trailing slashes from URLs. The syntax for the RTRIM function is: RTRIM(input_string, [trim_character]) The input_string is the text you want to remove characters from. It can be any kind of expression, such as a specific text value or a column. The trim_character is the character you want to remove from the right of the string. It’s an optional parameter, and if you don’t specify it, then a space character is used by the function. The parameters can be any type of string. The function will return either a VARCHAR2 or a LOB data type, depending on the type of data you specify in the parameters. You can specify more than one value for the trim_character, and the RTRIM function will remove both characters from the right of the string. The function is similar to the LTRIM value, where LTRIM removes characters from the left of the string. For more information on the RTRIM function, including the SQL used in this video, read the related article here: https://www.databasestar.com/oracle-trim/
Views: 129 Database Star
Hi Friends! Here we are learning about TRIM(), LTRIM() and RTRIM() function. Hope you'll understand about these functions. Let me know for any confusion or doubt. You can write me in comment box or can mail me. eMail Id - [email protected] Useful Tutorial Links : 1. SQL SINGLE ROW FUNCTION EXPLAINED https://youtu.be/VPtlTNVHDZc 2. SQL LENGTH() FUNCTION -- Length() Function Part-1 https://youtu.be/-EUd-CJLt0M -- Length() Function Part-2 https://youtu.be/I3gEsN_iYJo Thanks!
Views: 405 YourSmartCode
This clip will show you how to check each Table size, Number of records, Disk usage in SQL Database. You can see how to write the query to get details of all tables in terms of size, records, space utilization and free space on disk for tables. http://daynamicsaxaptatutorials.blogspot.com This is axapta ERP blog for Technical and functional fields and includes Microsoft Dynamics Axapta tutorials and Dynamics Axapta Coverage. This blog also contains x++ code help for Ax developer and solution of technical and functional daily issues. This blog is specific for Microsoft dynamics programming. Enterprise portal, SharePoint services, business connectors and Enterprise Resource Planning applications and sql database.It will help to get Microsoft Business Solutions.
Views: 945 Santosh kumar Singh
New STRING_SPLIT() function in SQL Server 2016 to split a string into multiple values & rows. Check the whole "SQL Server 2016" series here: https://www.youtube.com/playlist?list=PLU9JMEzjCv16mB9n4av00uZB5TJsdK3CG Check the details and code on my SQL blog at: https://sqlwithmanoj.com/2016/03/10/new-in-built-table-valued-function-string_split-in-sql-server-2016-to-split-strings/ Check my SQL FB Page at: https://www.facebook.com/sqlwithmanoj
Views: 9048 SQL with Manoj
1.Shrink the Table: Shrinking is started from 10g. In this method I’m using user u1 and table name sm1. Now I’m deleting some rows in sm1 COUNT ---------- 1048576 Table sm1 has 1048576 rows. [email protected]: delete from sm1 where deptno=10; 262144 rows deleted. I deleted above number of rows. Rows COUNT ---------- 786432 And I’m giving commit [email protected]: commit; Commit complete. So now we have 786432 rows in sm1 table. Now see the following command [email protected]: select OWNER,TABLESPACE_NAME,SEGMENT_NAME,SEGMENT_TYPE,BYTES/1024/1024||' mb'"space",BLOCKS,EXTENTS from dba_segments where tablespace_name like 'U%TS'; OWNER TABLESPACE_NAME SEGMENT_NAME SEGMENT_TYPE space BLOCKS EXTENTS ----- --------------- ------------- ------------- ------ ---------- ---------- U1 U1TS SM1 TABLE 29 mb 3712 44 After I deleted some rows in sm1 table still above result showing same values, so now our duty is shrink this table. This is done by following 2 ways, i By using COMPACT key word: In this method shrinking is done in two phases. In the first phase all fragmented space are just defragmented, but still the High Water Mark is persist with last used block only. That mean used free blocks are not de allocated and HWM is not updated here. Issue the following command before use shrink command. [email protected] alter table sm1 enable row movement; Table altered. There is particular use with above command, when we shrink the table all rows are moves to contiguous blocks, so here row movement should be done. By default the row movement is disabled for any table, so above command enabled the row movement. Then execute shrink command now. [email protected]: alter table sm1 shrink space compact; Table altered. Now see the space of table by using below command. [email protected]: select OWNER,TABLESPACE_NAME,SEGMENT_NAME,SEGMENT_TYPE,BYTES/1024/1024||' mb'"space",BLOCKS,EXTENTS from dba_segments where tablespace_name like 'U%TS'; OWNER TABLESPACE_NAME SEGMENT_NAME SEGMENT_TYPE space BLOCKS EXTENTS ----- --------------- ------------- ------------- ------ ---------- ---------- U1 U1TS SM1 TABLE 29 mb 3712 44 So here seems nothing happened with above shrink command, but internally the fragmented space is defragmented. But the high water mark is not updated, used free blocks are also not de allocated. For de allocating the used blocks we have to execute below command. This is the second phase. [email protected]: alter table sm1 shrink space; Table altered. Now see the space by using below command. [email protected]: select OWNER,TABLESPACE_NAME,SEGMENT_NAME,SEGMENT_TYPE,BYTES/1024/1024||' mb'"space",BLOCKS,EXTENTS from dba_segments where tablespace_name like 'U%TS'; OWNER TABLESPACE_NAME SEGMENT_NAME SEGMENT_TYPE space BLOCKS EXTENTS ----- --------------- ------------- ------------- ---------- ---------- ---------- U1 U1TS SM1 TABLE 20.8125 mb 2664 36 So now the space of sm1 table is reduced. Note: Actually the alter table sm1 shrink space command will complete these two phases of the shrinking of table at a time. But here we done shrink process in two phases because when we use alter table sm1 shrink space command the table locked temporarily some time period, during this period users unable to access the table. So if we use alter table sm1 shrink space compact command the table is not locked but space is defragmented. When we not in business hours issue the second phase shrink command then users are won’t get any problem. ii Because of above method the table dependent objects are goes to invalid state, to overcome this problem we have to use below command. [email protected]: alter table sm1 shrink space cascade; Table altered. The above command also shrinks the space of all dependent objects. We also do this in two phases like above two phases. See the below command. [email protected]: alter table sm1 shrink space compact cascade; Table altered. And then [email protected]: alter table sm1 shrink space cascade; Table altered. Transporting tablespace to different platform by Using RMAN : https://www.youtube.com/watch?v=CN401PUKK4A Oracle EBS apps Upgrade from 12 2 to 12 2 5 (start CD 51) : https://www.youtube.com/watch?v=zeO4goqR70Y Transport tablespace by using RMAN.: https://www.youtube.com/watch?v=YG6kWX7Par8
Views: 7112 BhagyaRaj Katta
So far, we have this table declaration: CREATE TABLE users( user_id NUMBER, username VARCHAR(50 CHAR) first_name VARCHAR2(50 CHAR), last_name VARCHAR2(50 CHAR) ) We can run this command see that it works. As we are learning though, we are going to want to be able to recreate our table with different settings and such, but if you try to run this command, it will complain that the table already exists. So we first need to delete this table before we start editing settings. When we get more experienced, we will learn about ways to edit the structure of a table that already exists. To fix this, we can get rid of the table using the DROP TABLE command: DROP TABLE users You can run this every time if you need to practice by adding a semicolon after it. This is how you can tell Oracle that you are putting in another command after it. This is known as a delimiter. When you run the script, it is going to run both commands. Now we can go through and reconsider our table structure. This is fine for starting out because we don't have any important data in our database, but once your database is in production you are not going to want to just drop tables. In the last video we discussed different constraints that you can apply to columns in a database table, but how do you actually apply these when you are creating a table? The first way you define constraints is to put them right after the column in your CREATE TABLE statement. CREATE TABLE users( username VARCHAR2(50 CHAR) NOT NULL ) When we define constraints this way, we usually say we are adding column attributes. If you have two constraints you want to add, you just put one after the other with spaces in between. There is no particular order that is required. CREATE TABLE users( username VARCHAR2(50 CHAR) NOT NULL UNIQUE ) In this situation we have already given the column the NOT NULL and UNIQUE attributes, so we should consider making this a primary key: CREATE TABLE users( username VARCHAR2(50 CHAR) PRIMARY KEY ) As you can see, adding column attributes is super easy. We can add a default like this: CREATE TABLE users( username VARCHAR2(50 CHAR) PRIMARY KEY, account_balance NUMBER DEFAULT 0 ) Note that now we need the comma after the first row. There are a few constraints we did not talk go through an example, specifically foreign keys and check constraints. We will be adding these constraints to our database in future videos. In the mean time, I have a thought for you… Many people prefer to name their column constraints. That way, we can refer to certain constraints by name. For example, we might have a primary key constraint that could be named users_pk. The way we are creating these constraints does not allow for this feature, so in the next video we are going to be discussing different ways to create constraints. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Support me on Patreon! http://www.patreon.com/calebcurry Subscribe to my newsletter: http://bit.ly/JoinCCNewsletter Donate!: http://bit.ly/DonateCTVM2. ~~~~~~~~~~~~~~~Additional Links~~~~~~~~~~~~~~~ More content: http://CalebCurry.com Facebook: http://www.facebook.com/CalebTheVideoMaker Google+: https://plus.google.com/+CalebTheVideoMaker2 Twitter: http://twitter.com/calebCurry Amazing Web Hosting - http://bit.ly/ccbluehost (The best web hosting for a cheap price!)
Views: 22514 Caleb Curry
In this video i'm going to demonstrate you about oracle sql single row functions step by step. concat funcation, substr function, instr function, lpad function, rpad function, trim function, replace function.
Views: 2774 OCP Technology
SQL RTRIM function removes all space ,characters from the Right-hand side of a string or How to use Rtrim Function in Oracle SQL or how to remove spaces using RTRIM Function or How to use LTRIM, RTRIM & TRIM functions step by step. Assignment link: https://drive.google.com/open?id=1GrQ_yV-56OaWvb371rXBAQJhTA8si_-S 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
Views: 83 EqualConnect Coach
In this tutorial, you'll learn how to use trim function PL/SQL (Procedural Language/Structured Query Language) is Oracle Corporation's procedural extension for SQL and the Oracle relational database. PL/SQL is available in Oracle Database (since version 7), TimesTen in-memory database (since version 11.2.1), and IBM DB2 (since version 9.7). Oracle Corporation usually extends PL/SQL functionality with each successive release of the Oracle Database. PL/SQL includes procedural language elements such as conditions and loops. It allows declaration of constants and variables, procedures and functions, types and variables of those types, and triggers. It can handle exceptions (runtime errors). Arrays are supported involving the use of PL/SQL collections. Implementations from version 8 of Oracle Database onwards have included features associated with object-orientation. One can create PL/SQL units such as procedures, functions, packages, types, and triggers, which are stored in the database for reuse by applications that use any of the Oracle Database programmatic interfaces. PL/SQL works analogously to the embedded procedural languages associated with other relational databases. For example, Sybase ASE and Microsoft SQL Server have Transact-SQL, PostgreSQL has PL/pgSQL (which emulates PL/SQL to an extent), and IBM DB2 includes SQL Procedural Language, which conforms to the ISO SQL’s SQL/PSM standard. The designers of PL/SQL modeled its syntax on that of Ada. Both Ada and PL/SQL have Pascal as a common ancestor, and so PL/SQL also resembles Pascal in several aspects. However, the structure of a PL/SQL package does not resemble the basic Object Pascal program structure as implemented by a Borland Delphi or Free Pascal unit. Programmers can define public and private global data-types, constants and static variables in a PL/SQL package. PL/SQL also allows for the definition of classes and instantiating these as objects in PL/SQL code. This resembles usage in object-oriented programming languages like Object Pascal, C++ and Java. PL/SQL refers to a class as an "Abstract Data Type" (ADT) or "User Defined Type" (UDT), and defines it as an Oracle SQL data-type as opposed to a PL/SQL user-defined type, allowing its use in both the Oracle SQL Engine and the Oracle PL/SQL engine. The constructor and methods of an Abstract Data Type are written in PL/SQL. The resulting Abstract Data Type can operate as an object class in PL/SQL. Such objects can also persist as column values in Oracle database tables. PL/SQL is fundamentally distinct from Transact-SQL, despite superficial similarities. Porting code from one to the other usually involves non-trivial work, not only due to the differences in the feature sets of the two languages, but also due to the very significant differences in the way Oracle and SQL Server deal with concurrency and locking. There are software tools available that claim to facilitate porting including Oracle Translation Scratch Editor, CEITON MSSQL/Oracle Compiler  and SwisSQL. The StepSqlite product is a PL/SQL compiler for the popular small database SQLite. PL/SQL Program Unit A PL/SQL program unit is one of the following: PL/SQL anonymous block, procedure, function, package specification, package body, trigger, type specification, type body, library. Program units are the PL/SQL source code that is compiled, developed and ultimately executed on the database. The basic unit of a PL/SQL source program is the block, which groups together related declarations and statements. A PL/SQL block is defined by the keywords DECLARE, BEGIN, EXCEPTION, and END. These keywords divide the block into a declarative part, an executable part, and an exception-handling part. The declaration section is optional and may be used to define and initialize constants and variables. If a variable is not initialized then it defaults to NULL value. The optional exception-handling part is used to handle run time errors. Only the executable part is required. A block can have a label. Package Packages are groups of conceptually linked functions, procedures, variables, PL/SQL table and record TYPE statements, constants, cursors etc. The use of packages promotes re-use of code. Packages are composed of the package specification and an optional package body. The specification is the interface to the application; it declares the types, variables, constants, exceptions, cursors, and subprograms available. The body fully defines cursors and subprograms, and so implements the specification. Two advantages of packages are: Modular approach, encapsulation/hiding of business logic, security, performance improvement, re-usability. They support object-oriented programming features like function overloading and encapsulation. Using package variables one can declare session level (scoped) variables, since variables declared in the package specification have a session scope.
Views: 3006 radhikaravikumar
http://www.sqltrainingonline.com SQL Null or Empty - How to Check for Null or Empty Column in SQL Server - SQL Training Online You can download the sample table script at http://www.sqltrainingonline.com/how-to-filter-for-sql-null-or-empty-string/. In this video, I show you how to filter for a SQL null or empty string. It can be difficult to filter a null because you can't simply compare with an equal sign. You have to use a special IS NULL clause to make the filter work. I also show you how to combine both the SQL Null and Empty String together in a special trick with the isnull SQL Server function. I use SQL Server 2012 to demonstrate the technique. Let me know what you think by commenting or sharing on twitter, facebook, google+, etc. 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: 18487 Joey Blue
How To Properly Uninstall oracle database 11g from windows 7 and 8 manually without formatting your Computer By Manish Sharma Rebellion Rider Blog Link http://bit.ly/uninstall-oracle-11g-from-win-7 Website: www.RebellionRider.com Manual Un-Installation of Oracle Database 11g. This video will show you proper process on uninstalling Oracle database 11g from windows 7 64 bit. How to uninstall oracle 11g on windows 7 / How to uninstall oracle 10g on windows 7 Read How to uninstall oracle 11g on windows http://www.rebellionrider.com/how-to-uninstall-oracle-database-11g-from-windows-7.html YouTube Video on How to create database http://bit.ly/create-database-using-DBCA 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
Views: 258865 Manish Sharma
PHP in Hindi Tutorials for Beginners String Library Functions - ltrim - remove space from beginning -- left side of string rtrim - remove space from end -- right side of string trim - remove space from both side - left and right side string Download Code : http://gestyy.com/wt2Nmp Visit Another Channel - Technology News - Tips Tricks Hack Android Windows - https://goo.gl/BohWiZ #mohammedi #computers
Views: 1658 Mohammedi Computers
In this video you will learn how to delete large number of records from a SQL Server Table. By watch this video you will learn following topics 1--How to Delete large number of records from SQL Server Table in small chunks 2--What is the difference between Full Recovery Mode and Simple Recovery Mode 3--Does Transactional Log file grow if we set the database to Simple Recovery and Delete huge number or records? 4--How to get the record count while Transactions is deleting the records by using NoLock Option 5--How to Shrink Log file and release unused space to Operating System 6- How to write script to delete records in small chunks from SQL Server Table Blog post link for scripts used in the video: http://sqlage.blogspot.com/2015/03/how-to-delete-huge-data-from-sql-server.html
Views: 9657 TechBrothersIT
Trim is one of the most frequently used operation over String data types. A developer often come across a scenario where they have the string with leading and trailing spaces around string. However, in SQL Server there is no TRIM function. In this video we will learn how quickly we can achieve same functionality. Read for more info: http://bit.ly/Wb7UBu
Views: 13809 Pinal Dave
Link for SQL concat function: http://www.rebellionrider.com/SQL-concat-function.htm SQL Concat function/SQL concat() function First function of SQL character manipulation function. Two have in depth knowledge of SQL concatenation operator Please watch my video on SQL concatenation Operator http://youtu.be/PYMeFe72Bas 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 Link for SQL function introduction Video 10 http://youtu.be/5rx8Q4x4-qI Link SQL concat Article http://www.rebellionrider.com/SQL-concat-function.htm Contacts E-Mail [email protected] Twitter https://twitter.com/rebellionrider Instagram http://instagram.com/rebellionrider Facebook. https://www.facebook.com/imthebhardwaj Linkedin. in.linkedin.com/in/mannbhardwaj/ Thanks for linking, commenting, sharing and watching more of our videos This is Manish from RebellionRider.com -------------------------------------------------------------------------------------------- SQL Concat () function is a Character manipulation function which is a category of SQL character function. We have already discussed the intro of SQL character function in Video 10. You can find link of this video in description below. Ok let's go ahead. SQL Concat () function concatenates two separate character string into one character string. Let's see the syntax Concat (string_1 , String_2) Note here that SQL Concat function takes only two arguments at a time. This SQL Concat function will return string_1 concatenated with string_2. This also means that it will return a single string which is a combined string of parameter String_1 and String_2. Both the parameters of SQL Concat function String_1 and string_2 can be of any data-type. You can even specify the columns of the table here. SQL Concat function is equivalent to the concatenation operator (||). SQL concatenation operator is represented by double solid vertical bars or we can say double pipe signs. Question: How to concatenate more than two strings as SQL Concat that can have only 2 parameters and what is the difference between SQL Concat Function and SQL concatenation operator? The one answer for the second Question What is the Difference between SQL Concat Function and SQL concatenation operator? Is While SQL Concat function takes only two parameters, The Concat operator can be repeated as often as is necessary. Meaning, by the help of SQL Concat operator you can combine as many strings as you want. And Concatenation operator is also not supported by several databases such as SQL server so this might cause problem. To answer the first question How to concatenate more than two strings as SQL Concat that can have only 2 parameters? We will have to jump over SQL developer. Let's see some examples. Say we want to retrieve the full name of an employee from Employees table. Let's try it using SQL Concat function. SELECT Concat (first_name, last_name) AS "Full Name" FROM employees; Here in this query we use two column names - first_name and last_name as arguments of our Concat function Execute. As you can see here, we get full name of our employee but there is no space in between first name and last name. We will see how to format this string using SQL Concat function in a few seconds But before that, let's see how to do the same task using SQL concatenation operator. SELECT first_name ||last_name AS "Full name" FROM employees; As you can see this query also produces the same result. Now we will see how to format full name of employees First we will do this using SQL concatenation Operator. SELECT first_name||' '||last_name AS "Full name" FROM employees; Now you can see we get space between first name and last name of the employee. Again, let's do it using SQL Concat function. Here we will see the nested function concept where we will be using nested Concat function to achieve this formatted string. SELECT Concat (Concat (first_name, ' '), last_name) FROM employees; Inner Concat function has two parameters. These are our first column name first_name and an empty string which will be a space between first name and second name. This Concat will now return a string which is the first name with space. This returning string will be the first input of our Outer Concat and column last_name will be the second input. All together this will give us the desired output. As you can see this method is complex than the first one where we use SQL concatenation operator.
Views: 79794 Manish Sharma
link of SQL substr blog : http://www.rebellionrider.com/SQL-substr-function.htm SQL substr function SQL Substr function will return a sub string of a specified length from the source string beginning at a given position. 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 ---------------------------------------------------------------------------- As the name suggests SQL Substr function will return substring from a given source string. Let's see the Syntax Substr (source_string, start_pos, Substr_length) As we can see SQL substr function takes 3 parameters. First one is Source string from which you want to extract the segment. Second parameter is Starting position for sub string from the Source string. And the third parameter is Substr_length which is the length for the substring. First two parameters are mandatory to specify while third one is optional. So we can say. SQL Substr function will return a sub string of a specified length from the source string beginning at a given position. First parameter source string can be of any data type CHAR, VARCHAR2, NCHAR, NVARCHAR2, CLOB, or NCLOB whereas both start_pos, Substr_length parameters must be number data type. The returning result of SQL Substr function is of same data type of source string. Let's see an example of SQL Substr function. SELECT substr('www.RebellionRider.com',5,14) FROM dual; Here in this query url of my website www.RebellionRider.com is our source string with the total length of 22 characters, Now, I want to extract the name of my website that is, RebellionRider. So if you count the total length of the name of the website, it is 14. That's why I have specified 14 as my third parameter of SQL Substr function which is substr_length. Also the name of the website RebellionRider is starting from 5th position therefore I have specified 5 at second parameter of SQL substr function which is strt_pos or starting position. Execute it. Here is our result RebellionRider When starting position is larger than the length of source string. In this case SQL Substr function will return NULL as a result. Let's do an example. SELECT substr('www.RebellionRider.com',23,14) FROM dual; As you can see here I have specified 23 at starting position and the total length of our source string is 22 characters Let's execute And the result is Null. Second scenario When the Substr_length is greater than source string In this case the segment return is the substring from starting position to the end of the string. For example SELECT substr('www.RebellionRider.com',5,23) FROM dual; Our starting position is at 5 means at the first R of RebellionRider and length of substring is set to 23 which is greater than the length of source string that is 22. Execute. As you can see we get a substring from first R of RebellionRider till the end of the source String. Third scenario When you supply numeric or arithmetic expression or a DATE instead of character as Source string to SQL Substr function In this scenario If you have supplied a numeric string instead of character as source string, the oracle engine casts them as a character when they occur as parameter to SQL Substr function. And if you have supplied Arithmetic expression or a DATE then The Oracle engine first solves or evaluates the Arithmetic expression or the DATE Then casts them as a character. Means if you have arithmetic expression in your source string then oracle will first solve it and then change or say cast the value of its result into character. Let's see some example. SELECT substr(50000-7,2,4) FROM dual; Oracle first evaluates the arithmetic expression that is 50000-7 equals to 49993. And then oracle engine casts this result 49993 into a character string. Means 49993 will be a 5 characters string. Starting position of substring is 2, that means from the first 9 of 49993 We specified the length of substring is 4 so we must get 9993 as our result. Let's check execute
Views: 81827 Manish Sharma
Explains the String Scalar Function TRIM to remove leading or trailing characters. From http://ComputerBasedTrainingInc.com SQL Course. Learn by doing SQL commands for ANSI Standard SQL, Access, DB2, MySQL, Oracle, PostgreSQL, and SQL Server.
Views: 756 cbtinc
SQL 12c Tutorial 10 : SQL Single Row Character Functions SQL 12c Tutorial for beginners Oracle SQL 12c Tutorial Case Conversion Functions UPPER LOWER INITCAP Character Manipulation functions CONCAT LENGTH SUBSTR INSTR REPLACE TRANSLATE TRIM LTRIM RTRIM LPAD RPAD
Views: 286 TechLake
Delete, Truncate and Drop all can be used to remove the contents of a table but they have significant differences and unique properties. While Delete is a DML statement, truncate and DROP are DDL. Delete can be used to remove partial/Selective data. While truncate removes the entire content of the table.
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Below is link for Useful Pl/SQL Books http://goo.gl/XMy0tt ---------------------------------------------------------- Difference Between Delete and Truncate in Detail On bigger picture they serve the same purpose but there are many Differences listed with examples Point Delete Truncate 1. Data Recovery Delete: Come under the DML Category, we need to commit or Rollback explicitly to make the changes permanent, so we can recover the data by Rollback command fully with in a session or up to a point if Save Points are used Fall In DDL Category (DDL Command issue the Auto commit implicitly) so no chances of Recovery even not using the Flashback table method. But Truncate operations are also logged , they didn’t generate redo SQL but they are logged , view for truncated data info V$LOGMNR_CONTENTS 2. Data Removal Delete Can remove all or selected data using the Where Clause predicates. Or we can say delete any subset of rows We can Truncate complete table or a partition or sub partition of a table. 3. Speed Delete is Slower because oracle maintain the redo logs for Read Consistency (so that every session connected can see a consistent data at a given point of time ) Delete is very time consuming activity especially when table have numerous indexes and Triggers associated with table Faster as no data logs are maintained no associated trigger firing. 4. DML Triggers Firing DML (Delete) triggers associated with table will fire. DML Trigger will not fire in case of truncate method. 5. Flashback Technology Data can be recovered even after commit operation using Flashback Table options Flashback_transaction_query table will give what to recover and up to which point. Data cannot be recovered in truncate method by Flashback table option. 6. Referential Integrity Constraint Behavior if we don’t have related data in child table then we can delete the data from the parent table or we have variants like On Delete Cascade & on Delete set Null. We can’t truncate a table with enable Referential Integrity Constraint, even there is no data in the child table, we have to disable or drop the constraint if we want to truncate the table. Exception: Truncate is possible if the FK is self-referential means primary key and foreign key are on the same table. 7. Space De allocation or Space Utilization No extent reset with delete when deleting rows from a table, extents are not de allocated, So if there were 50 extents in the table before the deletion, there will still be 50 after the deletion. Truncate: When a table is truncated it will free the space allocated except in case of reuse storage clause. This space can subsequently be used only by new data in the table or cluster resulting from insert or update operations .All extents are de allocated leaving only the extents specified when the table was originally created .Example So if the table was originally created with min extents 3, there will be 3 extents remaining when the tables is truncated. When you truncate a table, NEXT is automatically reset to the last extent deleted. 8. High Water Mark Delete will not reset the high water mark Truncate will reset the High Water mark which is very important for performance point of view as in case of full table scan and full index scan oracle will read all the block under high water mark this makes a lot of difference in terms of performance. 9. Cluster No as such restriction with delete. You cannot individually truncate a table that is part of a cluster. You must truncate the cluster, Delete all rows from the table, or drop and re-create the table. 10. Information Capturing Delete : we can capture the row information what we have deleted using Delete Method, f you are deleting multiple records then use composite data types (collections & records) Truncate Don’t have this feature of capturing the deleted records. 11. Function Based Index Impact DELETE You cannot delete rows from a table if a function-based index on the table has become invalid. You must first validate the function-based index. Truncate: No as such restriction 12. UNUSABLE Indexes Delete no as such feature. Truncate if table is not empty then truncate make all unusable indexes to useable. 13. Complex views You cannot delete data from a Complex view except through INSTEAD OF triggers. But we can delete data from simple Views and MV. We cannot truncate a view simple or complex but you can truncate MV with special Features like Preserve MV Logs and Purge MV Logs. 14. Privileges Delete You need to provide delete table privilege on object. Truncate you must have drop table privilege there is no truncate table privilege exists. 15. Domain Index No as such restriction You cannot truncate the object having domain index in invalid or In progress state
Views: 13544 Ram Gupta
englishspacedog YouTube tutorial from Canada http://www.herostratus.ca/PC.htm How to concatenate text and how to trim spaces ellipsis ... function SELECT tblGALAXIES.GalaxyID, tblGALAXIES.GalaxyName, tblSTARS.StarID, tblSTARS.StarName, tblPLANETS.PlanetID, rtrim(ltrim(tblPLANETS.PlanetName)) + ' ' + tblSTARS.StarName AS PlanetName, tblPLANETS.PlanetWeight /(SELECT PlanetWeight FROM tblPLANETS WHERE PlanetID = 3) AS WeightInEarths FROM tblGALAXIES LEFT JOIN tblSTARS ON tblGALAXIES.GalaxyID = tblSTARS.GalaxyID LEFT JOIN tblPLANETS ON tblSTARS.StarID = tblPLANETS.StarID ORDER BY tblGALAXIES.GalaxyName, tblSTARS.StarName, tblPLANETS.PlanetName;
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A few functions which can be used in SQL, if you have any questions feel free to ask in comments.
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This Video will show you the simple and efficient way to Debugging your Procedure | Package with PL/SQL Developer..
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Blog link: http://www.rebellionrider.com/sql-primary-key.htm SQL tutorial on Primary key / SQL Primary key, In this tutorial you will learn about simple primary key, composute primary key, how to drop primary key. defining primary key using create table and alter table along with many other things. Tool used in this tutorial is SQL Developer. This tutorial series is part of SQL expert exam certification training. if you are preparing for SQL certification you can use my tutorials. This SQL Tutorial is a part of free training. Copy Cloud referral link || Use this link to join copy cloud and get 20GB of free storage https://copy.com?r=j7eYO7 Contacts 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 So Primary Key There are two types of Primary keys First is Simple primary Key: Primary key which Involves only one column and Second is Composite Primary Key: Primary Key which involves more than one column. We will start with Simple primary key. You can create Primary key either with Create Table statement of by using Alter table Statement. Let's define simple primary key using create table statements. With create table statement we can either define primary key at column level or at table level. We will start with defining Primary key at column level using create table statement. You just have to put keyword Primary key after data type and size of column while defining a column of a table. Here oracle server will create a primary key on product id with default constraint name which will be slightly difficult to understand. You can give your own name to your constraint which is also a good practice.
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Subscribe for more PL SQL tutorials https://www.youtube.com/channel/UC7sbHUgN8FnJEZkEjvKTwJg String Function & Purpose 1 ASCII(x); Returns the ASCII value of the character x. 2 CHR(x); Returns the character with the ASCII value of x. 3 CONCAT(x, y); Concatenates the strings x and y and return the appended string. 4 INITCAP(x); Converts the initial letter of each word in x to uppercase and returns that string. 5 INSTR(x, find_string [, start] [, occurrence]); Searches for find_string in x and returns the position at which it occurs. 6 INSTRB(x); Returns the location of a string within another string, but returns the value in bytes. 7 LENGTH(x); Returns the number of characters in x. TUTORIALSPOINT Simply Easy Learning Page 59 8 LENGTHB(x); Returns the length of a character string in bytes for single byte character set. 9 LOWER(x); Converts the letters in x to lowercase and returns that string. 10 LPAD(x, width [, pad_string]) ; Pads x with spaces to left, to bring the total length of the string up to width characters. 11 LTRIM(x [, trim_string]); Trims characters from the left of x. 12 NANVL(x, value); Returns value if x matches the NaN special value (not a number), otherwise x is returned. 13 NLS_INITCAP(x); Same as the INITCAP function except that it can use a different sort method as specified by NLSSORT. 14 NLS_LOWER(x) ; Same as the LOWER function except that it can use a different sort method as specified by NLSSORT. 15 NLS_UPPER(x); Same as the UPPER function except that it can use a different sort method as specified by NLSSORT. 16 NLSSORT(x); Changes the method of sorting the characters. Must be specified before any NLS function; otherwise, the default sort will be used. 17 NVL(x, value); Returns value if x is null; otherwise, x is returned. 18 NVL2(x, value1, value2); Returns value1 if x is not null; if x is null, value2 is returned. 19 REPLACE(x, search_string, replace_string); Searches x for search_string and replaces it with replace_string. 20 RPAD(x, width [, pad_string]); Pads x to the right. 21 RTRIM(x [, trim_string]); Trims x from the right. 22 SOUNDEX(x) ; Returns a string containing the phonetic representation of x. 23 SUBSTR(x, start [, length]); Returns a substring of x that begins at the position specified by start. An optional length for the substring may be supplied. 24 SUBSTRB(x); Same as SUBSTR except the parameters are expressed in bytes instead of characters for the single-byte character systems. 25 TRIM([trim_char FROM) x); Trims characters from the left and right of x. 26 UPPER(x); Converts the letters in x to uppercase and returns that string.
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How to replace multiple spaces with one space? I came up with the situation of replacing multiple spaces with single space in SQL. I got the solution from a site but it was very difficult to understand at first look. So I got into deep exactly how it works? I really liked the trick and it made me write this blog post. This could be useful where regex expressions are not available. The logic is explained in video file. For visualization purpose space is represented as '@' character and '#' can be any random character which never occurs in string as a normal character. I am repeating again, Consider @ = white space # = any random character that is never used as normal character in strings. replace ( replace ( replace ( trim('string') , '@@','@#' ) ,'#@','') ,'#','')
Views: 506 Bharat Patil
How to install oracle database 11g on Windows 10 Pro 64 bit, I'll explain the detail steps for downloading the oracle database 11g Release 2 then how to install it step by step. after that I will show you how to access oracle database(software) using SQL*Plus. thanks for watching. Subscribe for more: ---------------------------------- https://goo.gl/oL45FT SWE.Safaa Al-Hayali - saf3al2a TAGS: #How_to_install_oracle_database_11g_on_Windows_10_Pro_64_bit ----------------------------------------------------------------------------------------------------
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SQL 12c General Functions NVL , NVL2, NULLIF and COALESCE SQL 12c Tutorial for beginners Oracle SQL 12c Tutorial NVL NVL2 NULLIF COALESCE
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SQL Server Database LTRIM Remove all Space Character LEFT HAND Side String Queries Command DB
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This video will provide you the details of each string functions in SQL Server 2014. I'll be walking through each and every kinds of build in function which are available in SQL Server in my next videos. Previous video for more String Functions String Function Part I https://www.youtube.com/watch?v=6cgn44DZ7w8 String Function Part II https://www.youtube.com/watch?v=RmyT87mstzc String Function Part III https://www.youtube.com/watch?v=lQVnQKeGlf0 ***************************************************************************************** REPLACE (Transact-SQL) Replaces all occurrences of a specified string value with another string value. Syntax REPLACE ( string_expression , string_pattern , string_replacement ) Arguments string_expression Is the string expression to be searched. string_expression can be of a character or binary data type. string_pattern Is the substring to be found. string_pattern can be of a character or binary data type. string_pattern cannot be an empty string (''), and must not exceed the maximum number of bytes that fits on a page. string_replacement Is the replacement string. string_replacement can be of a character or binary data type. Return Types Returns nvarchar if one of the input arguments is of the nvarchar data type; otherwise, REPLACE returns varchar. Returns NULL if any one of the arguments is NULL. If string_expression is not of type varchar(max) or nvarchar(max),REPLACE truncates the return value at 8,000 bytes. To return values greater than 8,000 bytes, string_expression must be explicitly cast to a large-value data type. ***************************************************************************************** REPLICATE (Transact-SQL) Repeats a string value a specified number of times. Syntax REPLICATE ( string_expression ,integer_expression ) Arguments string_expression Is an expression of a character string or binary data type. string_expression can be either character or binary data. Note : If string_expression is not of type varchar(max) or nvarchar(max), REPLICATE truncates the return value at 8,000 bytes. To return values greater than 8,000 bytes, string_expression must be explicitly cast to the appropriate large-value data type. integer_expression Is an expression of any integer type, including bigint. If integer_expression is negative, NULL is returned. Return Types Returns the same type as string_expression. ***************************************************************************************** REVERSE (Transact-SQL) Returns the reverse order of a string value. Syntax REVERSE ( string_expression ) Arguments string_expression string_expression is an expression of a string or binary data type. string_expression can be a constant, variable, or column of either character or binary data. Return Types varchar or nvarchar ***************************************************************************************** RIGHT (Transact-SQL) Returns the right part of a character string with the specified number of characters. Syntax RIGHT ( character_expression , integer_expression ) Arguments character_expression Is an expression of character or binary data. character_expression can be a constant, variable, or column. character_expression can be of any data type, except text or ntext, that can be implicitly converted to varchar or nvarchar. Otherwise, use the CAST function to explicitly convertcharacter_expression. integer_expression Is a positive integer that specifies how many characters of character_expression will be returned. If integer_expression is negative, an error is returned. Ifinteger_expression is type bigint and contains a large value, character_expression must be of a large data type such as varchar(max). Return Types Returns varchar when character_expression is a non-Unicode character data type. Returns nvarchar when character_expression is a Unicode character data type. ***************************************************************************************** RTRIM (Transact-SQL) Returns a character string after truncating all trailing blanks. Syntax RTRIM ( character_expression ) Arguments character_expression Is an expression of character data. character_expression can be a constant, variable, or column of either character or binary data. character_expression must be of a data type that is implicitly convertible to varchar. Otherwise, use CAST to explicitly convert character_expression. Return Types varchar or nvarchar
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Oracle Java Certification: Shortest Way To Crack OCA 1Z0-808 Just @ Rs 640/- -------------------------------------------------------------------------------------------------------- 1. For Java SE 8 Programmer I Exam 2. Topic wise Tests and Grand Tests 3. 280 Realistic Questions With Clear Explanation 4. Study Material (408 Pages) 5. Question Bank (107 Pages) 6. Videos (63 Sessions) Use the below links to access Durga Sir Videos and Downloadable Materials and Topic wise Tests and Grand Tests with Life-Time Access. 1. Oracle Java Certification: Shortest Way To Crack OCA 1Z0-808 Link: https://goo.gl/vcMKjz 2. Java 8 New Features In Simple Way Link: https://goo.gl/F2NfZi 3. Java 9 New Features In Simple Way: JShell, JPMS and More Link: https://goo.gl/s9PP1p 4. Complete JDBC Programming Part-1 Link: https://goo.gl/uT9sav 5. Complete JDBC Programming Part-2 Link: https://goo.gl/VmhM7t
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