The way you create a table is to use the CREATE TABLE command. CREATE TABLE users() So in this situation, the name comes right after the TABLE keyword. The next thing we do is put all of the columns on a line that we want to put in our table. CREATE TABLE users( user_id, username, first_name, last_name ) Notice the naming conventions here. For this series we are going to make columns with what is known as snake casing. This is where each individual word is separated by an underscore. if you have more than one column, all of them have to have commas except the last one. The comma is a way to say that another column is coming, so you don't need to do it on the last one. Now you would think we were done, but we also have to say what data type each column is. Later we will extensively discuss data types so we can focus on them exclusively. For now, here are the data types we are going to use: CREATE TABLE users( user_id NUMBER, username VARCHAR2(50), first_name VARCHAR2(50), last_name VARCHAR2(50) ) Now, inside of the parenthesis for varchar2, we pass in a number... This is the max length of the string. But the question is, what is it measured in? The default is actually in bytes, not characters. For example if we have the string hello, it is 5 characters, but it might take up a total of 10 bytes of storage. So I would recommend adding the keyword char right after the number so it defaults to 50 characters, not bytes. CREATE TABLE users( user_id NUMBER, username VARCHAR(50 CHAR), first_name VARCHAR2(50 CHAR), last_name VARCHAR2(50 CHAR) ) This will work to create a table, but it's really missing a lot of information… which column is the primary key? Are we adding any indexes? Is there any thing else we need to say about these columns? So as you can tell, we are making progress, but there is still so much to learn. The biggest gotcha to remember from this video is that the data type VARCHAR ends in a 2, stupid, right? who would end the name of something with a 2? Once again, this is Caleb from CalebTheVideoMaker2, and we will catch you in the next one! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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: 33958 Caleb Curry
This video we are going to discuss the VARCHAR2 and the NVARCHAR2 data types. The previous videos are a good foundation to this video. I've actually discussed so much stuff in those videos that I don’t have a whole lot to say. Good for you, right? I discussed over the previous videos that you should prefer to use VARCHAR2 over CHAR. That's because there is not a difference in performance or storage for a VARCHAR2 column. The only difference is that an CHAR column forces each value to take up a certain length even if it's not. There is one difference between the variable length and fixed length data types here that you need to know about, and that is storage limits. CHAR has a limit of 2000 bytes, while VARCHAR2 has a limit of 4000 bytes. That means you can store twice as much junk in a VARCHAR2 column! Other than that, these data types work exactly the same. I recommend you always use the VARCHAR2 data types instead of the CHAR data types, and only use NVARCHAR2 if you have a non-Unicode database. This will allow you to store Unicode characters in a column. Now, the amount of storage you can put in a VARCHAR2 column is twice what you can put in a CHAR column, but 4000 characters is still not very many characters. This is where the LOB data types come in, which we will discuss in the next video! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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: 5399 Caleb Curry
Heinz Kabutz, CIO / CTO, JavaSpecialists.EU Dmytro Vyazelenko, Senior Software Engineer, Canoo Engineering AG Is it better to write "" + 42 or Integer.toString(42)? How much memory can you save if you intern() all your strings? How can String Deduplication reduce your memory footprint, and what does it cost? And how much memory will Java 9 strings save in Bulgaria? What is the maximum length of a constant string? And a dynamic string? How much faster is the new StringBuilder().append("Hello ").append(name).toString() than "Hello " + name? What are intrinsics, and how do they relate to strings? Are strings really immutable? How can you efficiently create substrings? You’ll get answers to these and many more questions in this session.
Views: 732 Oracle Developers
Length(): This function is used to calculate the length of a string or column in query. Here space is also treated as one more character. so the count is 10. Queries used in Video: select ename,length(ename) from emp; select length('oracle num') from dual; Thanks for watching..:)
Views: 2181 WingsOfTechnology
In this tutorial we'll learn to determine the length of strings and also to insert strings within other strings through the LENGTH() and INSERT() functions respectively.
Views: 20833 The Bad Tutorials
Oracle CASE Functions | UPPER | LOWER | INITCAP | Oracle Tutorial for Beginners Oracle CASE Manipulation Oracle CASE Functions UPPER Character LOWER Character INITCAP Functions UPPER() in Oracle SQL LOWER () in Oracle SQL INITCAP() in Oracle SQL UPPER() in SQL LOWER () in SQL INITCAP() in SQL UPPER Function LOWER Function INITCAP function Oracle tutorial for Beginners initcap in sql server initcap in sql oracle oracle lowercase first letter initcap in sql server example oracle proper case function initcap meaning tsql initcap Oracle CASE Manipulation Oracle CASE Functions UPPER Character LOWER Character INITCAP Functions initcap in oracle
Views: 178 Oracle PL/SQL World
In this video I use the UPPER and LOWER functions of SQL. I use the UPPER function to make all the text uppercase and use the LOWER function to display the text as all lowercase. It does not change the actual data, but rather just displays the text in the corresponding case. I then use the functions to aid in searching without having to consider case sensitivity. This video is part of a series of videos with the purpose of learning the SQL language. For more information visit Lecture Snippets at http://lecturesnippets.com.
Views: 4013 Lecture Snippets
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: 113 Database Star
Have you ever tried to fit more than 8000 characters into a variable defined as varchar(max) (or nvarchar(max)) only to see your data get truncated? Today we explore why this happens and how to fix it, allowing you to create really long SQL strings. Related blog post with example code: https://bertwagner.com/2018/05/15/why-is-my-varcharmax-variable-getting-truncated/ Twitter: https://twitter.com/bertwagner Instagram: https://www.instagram.com/bertwagner/ https://www.instagram.com/sqlwithbert/ Facebook: https://www.facebook.com/SQLWithBert
Views: 412 Bert Wagner
https://www.databasestar.com/oracle-ceil/ The Oracle CEIL function, short for “ceiling”, will return the smallest integer value greater than the specified number. In other words, it rounds up to the nearest whole number. It’s the opposite of the FLOOR function, which rounds down. The syntax of CEIL is: CEIL(number) The number parameter can be any numeric data type. The CEIL function will return a number in the same data type as the parameter. So, you can use CEIL with decimal numbers, which is actually where CEIL works best. You can use it with whole numbers too. It won’t show an error, it just might display the same value as provided (e.g. CEIL(8) would be 8). You can also use functions inside CEIL. For example, CEIL(SUM(salary)) will SUM all of the salary values, and then round them up to the nearest whole number. Like with all functions, the Oracle CEIL function can also use column aliases. So, instead of having your column labelled “CEIL(8.12)” or “CEIL(salary)”, you can label your column “salary_rounded” or something that makes more sense. The CEIL function is similar to the ROUND function. However, ROUND will round up or down, where CEIL will always round up. The TRUNC function will also do some kind of rounding, but it removes decimals from a number which may cause it to “round” down. For more information, including the code used in the examples, read the related article here: https://www.databasestar.com/oracle-ceil/
Views: 606 Database Star
https://www.databasestar.com/oracle-upper-lower/ The Oracle LOWER function is used to convert a string to a lowercase value. It’s useful for comparing text or string values that may have mixed case, such as user input or data from different tables. The opposite of the LOWER function is the UPPER function (which converts to upper case). The syntax of LOWER is: LOWER(input_string) The input_string is the string value to convert to a lower case value. It can be any of CHAR, VARCHAR2, NCHAR, NVARCHAR2, CLOB, or NCLOB. The return type is the same as the input type. You can use the LOWER function in a WHERE clause. However, unless you have a function-based index on the column, any indexes won’t be used. For example, if you have an index on first_name, a query that uses “WHERE LOWER(first_name)” won’t use this index. You’ll have to create an index on the LOWER(first_name) for this to be used. It’s not required, but it’s just something to keep in mind. For more information about the Oracle LOWER function, including all of the SQL shown in this video and the examples, read the related article here: https://www.databasestar.com/oracle-upper-lower/
Views: 47 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: 346 YourSmartCode
LTRIM Function In Oracle | Character Manipulation | Oracle Tutorial for Beginners oracle sql tutorial for beginners LTRIM() Function in Oracle SQL LTRIM() Function in Oracle LTRIM() Function in SQL Oracle LTRIM Function ltrim and rtrim in oracle ltrim sql oracle trim function oracle string functions sql ltrim characters from string 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
Views: 119 Oracle PL/SQL World
https://www.databasestar.com/oracle-greatest/ The Oracle LEAST function is a useful function, but I don’t think it’s very well understood. It returns the least or smallest value in a set of values. You can provide the values, and use numbers or text values. The syntax for the Oracle LEAST function is: LEAST(expr1 [, expr_n]) The expr1 is the first expression to use for your comparison. Expr_n is one or more expressions to use in the comparison, separated by commas. This is optional. So how is LEAST calculated? If the parameters are numeric, the LEAST function finds the smallest number. If the parameters are characters, the function finds the earliest value if they were sorted alphabetically (using their character values). What data type is returned? It depends on the parameters you provide. It could be the same as the parameters you provide, or VARCHAR2 if the parameters are all characters. You can also use the LEAST function with dates. It’s the opposite of the GREATEST function. For more information on the LEAST function, including the SQL used in this video and the examples, read the related post here: https://www.databasestar.com/oracle-greatest/
Views: 142 Database Star
Varchar is very similar to CHAR in that it is used to store strings, but there are some pretty big differences. The first difference is that when you store data less than the max it does not pad it with spaces to make it fit. The benefit in this is that you will save storage. The downside to this is that now MySQL is going to have to keep track of how many characters you have. To do this, each value is going to have an additional byte or two that MySQL can use. The max length is 65535 bytes. That is per value in that column! But you have to keep in mind encodings. If your characters are encoded with something such as UTF-8, each character can take up multiple bytes. The max size for a character in this case is 3 bytes. That means that we really can't store that many characters. Additionally, MySQL has a row limit of 65535 bytes (potential bytes…meaning declared sizes). What does this mean? It means that if you make this too big, you are not going to be able to create other columns. Earlier I said that there will be an additional byte or two for each value you put into this column. The purpose of this is to keep track of how long the string is. Why one or two and not one? The reason being is because with one byte we can only count to 255. if we want to keep track of bytes after that we need two bytes. This means that we actually can't store quite 65535 bytes. Realistically, we can't store that much because we have to store the length of the string, and each character can take up to 3 bytes which can push us over the row limit. This means the real max is a little less than a third of that. Not every character is going to take up 3 bytes, but MySQL assumes it will as to not cut you short. This is slightly different than CHAR because char you can store up to 255 characters, not bytes. Even if you use an encoding where some characters take up multiple bytes, you can still store 255 of them. Remember that reason for this is that VARCHAR is subject to the row-limit. MySQL will not let you go past the max and will tell you the appropriate max, so don't worry about it too much. You should try not to push your limits. Plus, most of the time you will not come even close to the max for most columns. Should you use the max? Varchar will only store what is needed to store a value, but you should still try to have the max size no more than what is needed. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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: 7222 Caleb Curry
with full hd for sql programming language
Views: 866 Sourn Sarim
executed in oracle database 11g version 2
Views: 171 Education 4u
Code: MsgBox Len(MyString) More Tutorials At: http://kshadow22.webs.com/learning Thanks for watching, Comment, Rate & Subscribe! ----------------------------------------------------------------------------- Please go and like us on FaceBook! https://www.facebook.com/kshadow22
Views: 463 kshadow22
str_ireplace(),str_pad(),str_repeat(),str_replace(),str_rot13(),str_shuffle(),str_split(),str_word_count(),strcasecmp(),strchr(),strcmp(),strcoll(),strcspn(),strip_tags(),stripcslashes(),stripos(),stripslashes(),stristr(),strlen(),strnatcasecmp(),strnatcmp()strncasecmp(),strncmp(),strpbrk(),strpos(),strrchr(),strrev(),strripos(),strrpos(),strspn(),strstr(),strtok(),strtolower(),strtoupper(),strtr(),substr(),substr_compare(),substr_count(),substr_replace(),trim(),ucfirst(),ucwords() For Free source code and Free Project Please visit : http://www.tutorjoes.com/ http://www.facebook.com/tutorjoes http://www.youtube.com/tutorjoes
Views: 2007 Tutor Joe's Stanley
In this oracle tutorial I have tried to explain some character functions commonly used in Oracle. This functions are mainly related to string manipulation, pattern searching or matching. I have included one additional conversion function (to_date) which is to some extent linked to character functions.
Views: 1136 Subhroneel Ganguly
That's right. VARCHAR2 declarations mean that you have to provide an "N" or constraint on the size of the variable. If you have such declarations all over your code, that's a form of hard-coding and you are likely to get hammered by VALUE_ERROR exceptions. This video shows you how to fix this problem, focusing in on the very helpful SUBTYPE feature of PL/SQL. ============================ Practically Perfect PL/SQL with Steven Feuerstein Copyright © 2015 Oracle and/or its affiliates. Oracle is a registered trademark of Oracle and/or its affiliates. All rights reserved. Other names may be registered trademarks of their respective owners. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the “Materials”). The Materials are provided “as is” without any warranty of any kind, either express or implied, including without limitation warranties or merchantability, fitness for a particular purpose, and non-infringement.
In this video, You can understand about STRING functions (CONCAT(), LEN(), DATALENGTH(), REPLACE())in SQL with examples
Views: 531 Krishna kumar Chaudhary
What is RANDOM ORACLE? What does RANDOM ORACLE mean? RANDOM ORACLE meaning - RANDOM ORACLE definition - RANDOM ORACLE explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. SUBSCRIBE to our Google Earth flights channel - https://www.youtube.com/channel/UC6UuCPh7GrXznZi0Hz2YQnQ In cryptography, a random oracle is an oracle (a theoretical black box) that responds to every unique query with a (truly) random response chosen uniformly from its output domain. If a query is repeated it responds the same way every time that query is submitted. Stated differently, a random oracle is a mathematical function chosen uniformly at random, that is, a function mapping each possible query to a (fixed) random response from its output domain. Random oracles as a mathematical abstraction were firstly used in rigorous cryptographic proofs in the 1993 publication by Mihir Bellare and Phillip Rogaway (1993). They are typically used when the cryptographic hash functions in the method cannot be proven to possess the mathematical properties required by the proof. A system that is proven secure when every hash function is replaced by a random oracle is described as being secure in the random oracle model, as opposed to secure in the standard model of cryptography. Random oracles are typically used as an ideal replacement for cryptographic hash functions in schemes where strong randomness assumptions are needed of the hash function's output. Such a proof generally shows that a system or a protocol is secure by showing that an attacker must require impossible behavior from the oracle, or solve some mathematical problem believed hard in order to break it. Not all uses of cryptographic hash functions require random oracles: schemes that require only one or more properties having a definition in the standard model (such as collision resistance, preimage resistance, second preimage resistance, etc.) can often be proven secure in the standard model (e.g., the Cramer–Shoup cryptosystem). Random oracles have long been considered in computational complexity theory, and many schemes have been proven secure in the random oracle model, for example Optimal Asymmetric Encryption Padding, RSA-FDH and Probabilistic Signature Scheme. In 1986, Amos Fiat and Adi Shamir showed a major application of random oracles – the removal of interaction from protocols for the creation of signatures. In 1989, Russell Impagliazzo and Steven Rudich showed the limitation of random oracles – namely that their existence alone is not sufficient for secret-key exchange. In 1993, Mihir Bellare and Phillip Rogaway were the first to advocate their use in cryptographic constructions. In their definition, the random oracle produces a bit-string of infinite length which can be truncated to the length desired. According to the Church–Turing thesis, no function computable by a finite algorithm can implement a true random oracle (which by definition requires an infinite description). In fact, certain artificial signature and encryption schemes are known which are proven secure in the random oracle model, but which are trivially insecure when any real function is substituted for the random oracle. Nonetheless, for any more natural protocol a proof of security in the random oracle model gives very strong evidence of the practical security of the protocol. In general, if a protocol is proven secure, attacks to that protocol must either be outside what was proven, or break one of the assumptions in the proof; for instance if the proof relies on the hardness of integer factorization, to break this assumption one must discover a fast integer factorization algorithm. Instead, to break the random oracle assumption, one must discover some unknown and undesirable property of the actual hash function; for good hash functions where such properties are believed unlikely, the considered protocol can be considered secure.
Views: 298 The Audiopedia
One of my favorite features of associative arrays is the ability to index by string, in addition to integer. You can have all sorts of fun! This video was taken from PLSQLChannel.com, originally recorded before Steven Feuerstein re-joined Oracle in March 2014. ======================================== Practically Perfect PL/SQL with Steven Feuerstein Copyright © 2015 Oracle and/or its affiliates. Oracle is a registered trademark of Oracle and/or its affiliates. All rights reserved. Other names may be registered trademarks of their respective owners. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the ?Materials?). The Materials are provided ?as is? without any warranty of any kind, either express or implied, including without limitation warranties or merchantability, fitness for a particular purpose, and non-infringement.
Code and details: mysql select min and max length of table data per column http://blog.softhints.com/mysql-select-min-and-max-length-of-all-table-columns/ In this video: * MySQL select max length all column values per table * MySQL select min length all columns values per table * MySQL query average length all columns values per table --------------------------------------------------------------------------------------------------------------------------------------------------------------- Socials Facebook: https://www.facebook.com/groups/435421910242028/ Facebook: https://www.facebook.com/Softhints/ Twitter: https://twitter.com/SoftwareHints If you really find this channel useful and enjoy the content, you're welcome to support me and this channel with a small donation via PayPal and Bitcoin. PayPal donation https://www.paypal.me/fantasyan Bitcoin: 1DBZu6N9JTpRDdc9QChLZnX3v2iVRaQ4ym
Views: 106 Softhints
Seguimos completanto nuestro tutorial de lenguaje SQL. Hoy vemos las funciones LPAD, RPAD y TRIM. Si sos fanatico de las bases de datos Oracle no dejes de registrarte en http://comunidadoraclehispana.ning.com
Views: 1422 Asteriscoo Mas
Learn the right way to put new yoyo string onto a yoyo, how to adjust the string length for your height, properly retie the slipknot, and put it onto your finger. http://yoyotricks.com/ Get new yoyo string for your yoyo here: https://yoyotricks.com/shop/cat/yoyo-store/yoyo-string/
Views: 291734 YoTricks
Oracle Database11g tutorials 10 || SQL Single Row Function (SQL Functions ) by Pravendra Gaur. Like subscribe my channel Pravendra Gaur , I will teach you how to crack interviews and many other technologies. Like me on facebook https://www.facebook.com/pravendragaur.biz/ Email : [email protected] Oracel single row function. Character functions Upper Lower Initcap Concat Substr Instr Length Lpad Soundex Ltrim Rtrim Replace Regexp_count
Views: 93 Pravendra Gaur
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Views: 452 Genysis Lab
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: 751 cbtinc
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: 2858 radhikaravikumar
In this video, you will learn how to use and apply basic functions in sql query. Basic functions are as follows, 1. arithmetic functions: abs(), mod(), sqrt(), sin(), cos(), log(), exp(), sign(), floor(), ceil etc. 2. character functions: length(), lower(), upper(), initcap(), lpad(), rpad(), ltrim(), rtrim, substr() etc. 3. aggregate functions: sum(), avg(), max(), min(), count() & count(*)
Views: 853 Ishwar Academy
Beginner lessen for Oracle statement with Single row function
Views: 1966 Harith Jawad
https://www.youtube.com/playlist?list=PLyGqUe6Oa_5Hcb_5QqXIsMZhvsm7Bo_-Z What is a Function?, Different types of SQL Functions, MS SQL Server Built-in Functions with Examples, SQL String Functions, SQL Numeric Functions, SQL Date Functions, and SQL Conversion Functions. Launch SQL Server Management Studio, Write SQL Functions with SQL Select Command and execute. SQL Functions are for performing calculations on Data (String, Numbers, Date, and Others).
Views: 15362 G C Reddy
Over view about all SQL String functions like Sub-string,left,right,length ,Ltrim ,Rtrim, char-index,pat-index etc and their usage with examples. Please subscribe to get more videos.
Views: 293 WhatVwant A Complete Solution
The first category of data types that we are going to cover in this MySQL series are the string data types, or character data types. There are two that I am going to talk about in this video, CHAR and VARCHAR. We'll start with CHAR. CHAR is a string data type where you specify how many characters are allowed in parenthesis after you declare the column as this type. For example, we can say CHAR(50) to allow up to 50 characters for each value in that column. The thing to know about CHAR though is that it is a fixed-length string. That means every single value inside of that column is actually going to be whatever you declare the length as. So if you say CHAR(50), every string is going to be 50 characters long. If, for example, you have a row that only uses 40 characters, MySQL will pad the right side of the string with spaces until it fills 50 characters. Now, the highest value you can put in here is 255. The 255 refers to characters. This means that you can have strings with up to 255 characters. How does the computer know how to store these characters? That has to deal with the character set and the encoding of the characters. By default, MySQL is going to use UTF-8. We are not going to discuss UTF-8 in detail for a while but essentially UTF-8 says that each character can take up to 3 bytes of storage. 255 comes from the max number you can count to using binary. So if we are keeping track of how many values are in this column in an 8 bit number, 255 is the highest. If you don't know what I'm talking about it, we'll worry about it later. You can actually make the column CHAR(0). In this situation, the only thing you could put in as a value for this column is an empty string (''). When retrieving variable length CHAR data from a database it may not look like the database pads the value. That's because MySQL actually strips spaces from the value when presented. If you want to keep all of the spaces that have been added when you retrieve the value, you can do that. Look up PAD_CHAR_TO_FULL_LENGTH online. In the next video we are going to discuss VARCHAR. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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: 4562 Caleb Curry
String functions are used in computer programming languages to manipulate a string or query information about a string (some do both). ... The most basic example of a string function is the length(string) function. This function returns the length of a string literal.Scalar-valued UDFs are an easy way to define constant values to use in your database environment. You can pass field values as parameters into UDFs. You can nest scalar function calls. This means that you can pass a call to a scalar-valued function to another function or stored procedure.Numeric functions perform manipulation of numbers that normally are contained in a table column. ... Returns a numeric value, rounded to the specified length or precision. SIGN() SQL server, MySQL, Oracle, PostgreSQL. Returns the positive (+1), zero (0), or negative (-1) sign of a numeric expression.A stored function (also called a user function or user-defined function) is a set of PL/SQL statements you can call by name. Stored functions are very similar to procedures, except that a function returns a value to the environment in which it is called. User functions can be used as part of a SQL expression.Function must return a value but in Stored Procedure it is optional( Procedure can return zero or n values). Functions can have only input parameters for it whereas Procedures can have input/output parameters . ... Functions can be called from Procedure whereas Procedures cannot be called from Function,The CTE was introduced into standard SQL in order to simplify various classes of SQL Queries for which a derived table just wasn't suitable. ... Introduced in SQL Server 2005, the common table expression (CTE) is a temporary named result set that you can reference within a SELECT, INSERT, UPDATE, or DELETE statement.The isDate(string, string) function accepts two string arguments. It takes them, compares the first argument with the second as a pattern and, if the first string can be converted to a date which is valid within system value of locale , according to the specified pattern , the function returns true.printf does the same, treating %s as a pointer-to-string. In C, variables that are arrays become a pointer to the first element of the array when used as function arguments -- so your scanf() sees a pointer to memory (assuming "str1" is an array). SQL - Useful Functions SQL COUNT Function - The SQL COUNT aggregate function is used to count the number of rows in a database table. SQL MAX Function - The SQL MAX aggregate function allows us to select the highest (maximum) value for a certain column. More items... SQL has many built-in functions for performing processing on string or numeric data. Following is the list of all useful SQL built-in functions − SQL COUNT Function - The SQL COUNT aggregate function is used to count the number of rows in a database table. SQL MAX Function - The SQL MAX aggregate function allows us to select the highest (maximum) value for a certain column. SQL MIN Function - The SQL MIN aggregate function allows us to select the lowest (minimum) value for a certain column. SQL - The SQL AVG aggregate function selects the average value for certain table column. SQL SUM Function - The SQL SUM aggregate function allows selecting the total for a numeric column. SQL SQRT Functions - This is used to generate a square root of a given number. SQL RAND Function - This is used to generate a random number using SQL command. SQL CONCAT Function - This is used to concatenate any string inside any SQL command. SQL Numeric Functions - Complete list of SQL functions required to manipulate numbers in SQL. SQL String Functions - Complete list of SQL functions required to manipulate strings in SQL. Returns a Unicode string with the delimiters added to make the input string a valid SQL Server delimited identifier. REPLACE. Replaces a sequence of characters in a string with another set of characters. REPLICATE. Repeats a string value a specified number of times.SQL. Character Functions with Examples. Character functions accept character inputs and can return either characters or number values as output. SQL provides a number of different character datatypes which includes – CHAR, VARCHAR, VARCHAR2, LONG, RAW, and LONG RAW.Aggregate Functions: Aggregates the values and return a single value, below is the list of some aggregate values in sql server. These functions are created by user in the system database, and we have 3 types of user define functions: Scalar Function. Inline Table-Valued Function.
Views: 48 Technology mart
In this ASP.NET Video tutorial, i am going to show you, Occurrence of character in given string. Suppose you have a string like 'billy' then this program show that how many times character 'b' is in it.
Views: 2304 ASPNET WEBFORM
The TEXT data types have not yet been discussed, but they are another string data type. They are similar to the VARCHAR data type with some minor differences that are important to know. The first thing to note is that there are four versions used to determine different sizes. From least to greatest size is TINYTEXT, TEXT, MEDIUMTEXT, LARGETEXT. These each have different maximum byte sizes: 255, 65535, 16 million something, and 4 billion something. You create a column as one of these data types just as you would with a varchar column. You work with them exactly the same, too. If that is the case, what are the primary differences between these and VARCHAR? The first difference is that VARCHAR is restricted by the row limit of a table. TEXT tables do not contribute nearly as much (max of 12 bytes) because the data is not stored inline in the table. This means that if you need to allow for extra space for other rows, you can use a TEXT column. And even though the table only contains a pointer to the data, it is all hidden to us and working with a TEXT column is the same as working with a VARCHAR column. The second primary difference is that TEXT data types do not allow for a default other than NULL. Thirdly, VARCHAR is limited to just under 64KB, whereas you can use MEDIUMTEXT or LARGETEXT to allow for more storage. So if what you are trying to store as an individual value is over 64KB, use a text column. Other than those three things, VARCHAR will usually work just fine for our text needs. Now, last thing is that these data types are often called CLOB data types. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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: 5346 Caleb Curry