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Oracle SQL Tutorial 27 - CHAR Part 1
 
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This video and the next is going to cover CHAR and NCHAR. Be sure to check out the previous two videos as these are going to introduce you to some foundational knowledge required to understand these data types. CHAR is a fixed-length data type. What that means is that every value for a CHAR column is going to be the same length. You specify the length in parenthesis when you create the table. The thing you need to know though is that the default measurement is in bytes. That means if you specify the length to be CHAR(50), the length of each value will be 50 bytes, by default. If you want to change that to 50 characters, you can pass in the word CHAR as in CHAR(50 CHAR). This is known as a qualifier. Specifically, they are known as length semantics qualifiers (describes the meaning of the given length). Now, I said the default was bytes, but you can actually change the default to characters. In that situation, you can actually use the keyword BYTE to break away from the default. In general, it's best to put CHAR or BYTE even if it is the default. In general, it's best to keep things consistent. It's okay to have these measured in CHAR or BYTE, but it is recommended that every column is the same. It allows you to be more consistent as if some columns measure length in bytes and some measure length in characters, things can get confusing. If you do want to change the default, look up NLS_LENGTH_SEMANTICS as well as the potential problems it may bring. What values are allowed in parenthesis? That is what we are going to 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: 4113 Caleb Curry
Oracle SQL Tutorial 28 - CHAR Part 2
 
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Now this video is a continuation of the last video. I decided to break the video up into sections so they didn't cover so much information and drag on for 10 minutes. This video we are going to talk about the length of CHAR. Now it is important to remember that CHAR is a fixed-length data type. This means that every row's value for this column is going to have the same length. The length is given to the database by specifying the length in parenthesis, such as CHAR(10). If you give a value shorter than that, it will be padded with spaces. What range is allowed though? The lowest is actually one. The highest is 2000. Now, remember that Oracle allows either the specification of CHAR or BYTE. The limit of 2000 is actually 2000 bytes. What happens if you put 2000 CHAR? Well, Oracle actually lets you do that. What is the problem with this though? The problem is that not all characters are 1 byte. This means that our 2000 CHAR is inaccurate. This will only work with 1 byte characters. This might not seem like a big problem, but it can lead to runtime errors in code that uses our database. A runtime error is when our code runs and in certain circumstances we get an error and others we do not. If we allow a user to insert up to 2000 characters, but they decide to use multibyte characters such as Chinese, we will get an error. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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: 3321 Caleb Curry
Oracle LENGTH Function
 
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https://www.databasestar.com/oracle-length/ The Oracle LENGTH function allows you to find the length of a string, also known as the number of characters in a string. It’s a common feature in different languages, and SQL is no different. The LENGTH function only has one parameter: LENGTH ( string_value ) The parameter is the string_value which is the value to check the length of. The function returns a number that represents the number of characters in the function. Some points to remember about the Oracle LENGTH function: If string_value is NULL, then LENGTH will return NULL. If string_value is an empty string, the LENGTH will return NULL. The string_value can be any of the character data types - CHAR, VARCHAR2, NCHAR, NVARCHAR2, CLOB, NCLOB. If the string_value is a CHAR data type, then the LENGTH will include any trailing spaces in the value. For more information about the Oracle LENGTH function, including all of the SQL shown in this video and the examples, read the related article here: https://www.databasestar.com/oracle-length/
Views: 294 Database Star
Oracle Database11g tutorials 13 || SQL substr function / SQL substring function
 
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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: 78806 Manish Sharma
Oracle SQL Tutorial 32 - VARCHAR2 and NVARCHAR2
 
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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: 4834 Caleb Curry
Oracle SQL Tutorial 24 - Important Data Types
 
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In the upcoming videos we are going to discuss data types in depth, but I don't want to drown you in all of the details. Because of that, I'm giving you this video which is going to introduce you to the most important data types. Then, in the upcoming videos, I'll describe them in more depth. One of the data types we've already discussed in this video is NUMBER. This data type is used to, obviously, store a number. It can be used to store integers (whole numbers), or numbers with decimals. There are two other numeric data types you should know of. BINARY_FLOAT and BINARY_DOUBLE are both numeric data types that are known as floating point numbers. A floating point number is often used for large numbers that have decimal places where it is acceptable to not be completely precise. What I mean by this is that these numbers can only store numbers correctly up to a certain decimal point. If you need perfect precision, you will want to use the NUMBER data type. Now storing numbers is good sometimes, but occasionally you will want to store string data. String data can be any sequence of characters, including numbers. By telling the database that a column is a string data type, the database knows how to treat that column. There are four important string data types that you need to know about. The first two are CHAR and NCHAR. These data types are used to store a fixed-length string. So for example, you can say you want to store 12 characters. This means that every value for this column will be exactly 12 characters. If you insert less than 12 characters, the data will be padded with spaces. This means you will want to use one of these data types when every value in the column is the same length. What is the difference between CHAR and NCHAR? CHAR uses what is known as ASCII while NCHAR uses Unicode. The difference is what characters are allowed and how much space each character takes. ASCII takes up less space but only supports English, numbers, and some symbols. UNICODE allows you to store characters from multiple languages but takes up more space. Those were both fixed-length string. What if you want to store data that changes in length? That is where VARCHAR2 and NVARCHAR2 come in. When it comes to storing dates, the data types that are most important are DATE and TIMESTAMP. Date can be used to store dates and time. Timestamp is a data type that can be used to store an exact moment in time. Lastly, there are interval types. These store a date range. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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: 5771 Caleb Curry
LENGTH Function in SQL Query
 
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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: 2076 WingsOfTechnology
SQL Tutorial - 42: The LENGTH() & INSERT() Functions
 
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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: 20359 The Bad Tutorials
Learn MySQL In Arabic #23 - String Functions - Length, Char_Length
 
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Learn how to get string length and char length
Views: 5134 Elzero Web School
TO_CHAR(datetime) Function in SQL Query
 
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TO_CHAR (datetime) : TO_CHAR (datetime) converts a datetime datatype to a value of VARCHAR2 datatype in the format specified by the date format. The following is a list of valid parameters when the TO_CHAR function is used to convert a date to a string. These parameters can be used in many combinations. YEAR Year, spelled out YYYY 4-digit year YYY Last 3 digits of year. YY Last 2 digits of year. Y Last 1 digit of year. IYYY 4-digit year based on the ISO standard Q Quarter of year (1, 2, 3, 4; JAN-MAR = 1). MM Month (01-12; JAN = 01). MON Abbreviated name of month. MONTH Name of month, padded with blanks to length of 9 characters. RM Roman numeral month (I-XII; JAN = I). WW Week of year (1-53) where week 1 starts on the first day of the year and continues to the seventh day of the year. W Week of month (1-5) where week 1 starts on the first day of the month and ends on the seventh. IW Week of year (1-52 or 1-53) based on the ISO standard. D Day of week (1-7). DAY Name of day. DD Day of month (1-31). DDD Day of year (1-366). DY Abbreviated name of day. J Julian day; the number of days since January 1, 4712 BC. HH Hour of day (1-12). HH12 Hour of day (1-12). HH24 Hour of day (0-23). MI Minute (0-59). SS Second (0-59). SSSSS Seconds past midnight (0-86399). FF Fractional seconds. Thanks for watching...:)
Views: 10093 WingsOfTechnology
Oracle SQL Tutorial 26 - UTF-8 and UTF-16
 
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UTF-8 and UTF-16 are different encodings for the Unicode character set. Let's discuss UTF-8 first. UTF-8 is what is known as a variable-length character set. This means that the amount of storage a character takes up depends on what character it is. For example, if we store the character A, it will only take up one byte. In fact, ASCII is a subset of UTF-8. That means UTF-8 encoding can work with ASCII data. If you are new to computer storage, a byte is a very small amount of information. The smallest thing a computer can store is a bit. 1 or 0. On or off. There are 8 bits in a byte, 1024 bytes in a kilobyte, 1024 kilobytes in a megabyte, 1024 megabytes in a gigabyte, and 1024 gigabytes in a terabyte, and 1024 terabytes in a petabyte. Considering it is completely possible for a database to be multiple petabytes, you can understand that a byte is very small. If you store a non-English character, the size of UTF-8 will increase to 2, 3, or 4 bytes. If you think back to when we used the VARCHAR data type, we passed in 50 CHAR. The reason we throw in that CHAR is that the default for Oracle is 50 characters. Now you can understand why adding the CHAR might be important. If a character can take up multiple bytes, you cannot guarantee 50 characters. Now, on to UTF-16. UTF-16 is also a variable length encoding, but it differs in that It is either 2 or 4 bytes. That means to store an A, it now takes two bytes rather than one. Even though a byte is so small, when you are storing billions of characters, an unnecessary byte really adds up to a lot of wasted storage. We can only represent so many characters with 2 bytes. When we run out of options, we move to four bytes to allow for other characters. Which do we use? It often depends on what platform you are on and also what languages you are working with. For example, if you are working with Asian language, UTF-16 stores each character in 2 bytes while UTF-8 stores each character in 3 bytes. So you could save space by using UTF-16. Additionally, UTF-16 works better when you are writing code in Java or something from Microsoft .NET because UTF-16, or a subset of it called UCS-2, is widely adopted. Other than that, UTF-8 will be the one you want. Now that we have built a pretty good foundation of character sets, we can now continue our discussion of 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: 6824 Caleb Curry
SQL Interview Questions : To char Function with excellent examples All possible ways
 
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SQL Interview Questions : To char Function with excellent examples All possible ways Gun shot SQL Interview questions
Views: 87 Bangalore Techie
SQL Tutorial - 40: The TRIM() Function
 
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In this tutorial we'll see how we can remove leading and trailing spaces from strings using the TRIM() function.
Views: 24763 The Bad Tutorials
MySQL 25 - CHAR Data Type
 
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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: 4249 Caleb Curry
Oracle TO_NUMBER Function
 
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https://www.databasestar.com/oracle-to_number/ The Oracle TO_NUMBER function is used to convert a text value into a number value. It’s similar to TO_CHAR and TO_DATE, but converts a value to a number. The number will also be rounded to a specified number of digits, and returned as a NUMBER value. The syntax is: TO_NUMBER( input_value, [format_mask], [nls_parameter] ) The input_value is the value to be converted to a number. Commonly this is provided as a string (e.g. CHAR or VARCAHR2) but can be several other data types as well. The format_mask is the format that the output value should be displayed as. It must be a valid number format. This is an optional value. The final parameter, nls_date_language, is used to work out how the output is displayed, such as how to display currency symbols. It’s also an optional value. For more information about the Oracle TO_NUMBER function, including all of the SQL shown in this video and the examples, read the related article here: https://www.databasestar.com/oracle-to_number/
Views: 2098 Database Star
TRIM Function In Oracle | Character Manipulation | Oracle Tutorial for Beginners
 
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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: 163 Oracle PL/SQL World
LPAD and RPAD in Oracle SQL | Character Manipulation | Oracle Tutorial for Beginners
 
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LPAD and RPAD in Oracle SQL | Character Manipulation | Oracle Tutorial for Beginners Oracle Database Tutorial for Beginners Oracle SQL Tutorial for Beginners Oracle SQL lpad and rpad in oracle with examples Oracle Tutorial for Beginners LAPD function in Oracle RPAD function in Oracle LPAD in Oracle RPAD in Oracle lpad and rpad in oracle with examples LPAD() in Oracle RPAD() in Oracle how to use lpad and rpad at a time lpad oracle example how to use both lpad and rpad in oracle lpad in sql w3schools lpad and rpad in oracle with examples lpad in sql server lpad in oracle lpad and rpad in Oracle SQL
Views: 125 Oracle PL/SQL World
Char vs Varchar2 |Char vs Varchar2 in Oracle|Datatype in Oracle | Difference Between char & Varchar2
 
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Oracle 12C New feature - Creating Table Names Greater Than 30 char length
 
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oracle 12c new features This video talks about the new feature of creating table names greater than 30 char. http://easy-learning-tech.blogspot.in/2018/04/oracle-12c-new-feature-table-names.html oracle 12c new features for developers
Views: 90 Siva Academy
MySQL 26 - VARCHAR Data Type
 
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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: 6420 Caleb Curry
Oracle SQL Tutorial 11 - CREATE TABLE
 
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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: 30208 Caleb Curry
Find the Number of Occurrences of a Character In the given String SQL | ORACLE | PL SQL
 
03:34
Find the Number of Occurrences of a Character In the given String SQL | ORACLE | PL SQL
Views: 901 Online Pl Sql
Sql Training Online - Sql Trim, Rtrim, Ltrim
 
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Learn about the Trim, RTrim, LTrim functions in the SQL Language. Visit http://www.SqlTrainingOnline.com for 30 more FREE videos.
Views: 10562 Joey Blue
SQL 033 Data Types, Character String Data, VARCHAR
 
02:10
Explains the SQL VARCHAR or variable length character data type. From http://ComputerBasedTrainingInc.com SQL Course. Learn by doing SQL commands for ANSI Standard SQL, Access, DB2, MySQL, Oracle, PostgreSQL, and SQL Server.
Views: 2166 cbtinc
65. MODIFY COLUMN Data Type and Its Size with or Without Constraint in SQL (Hindi)
 
03:49
Please Subscribe Channel Like, Share and Comment Visit : www.geekyshows.com
Views: 6754 Geeky Shows
Session6 Data type in Oracle
 
15:25
Session 6: Datatypes In Oracle   ALPHABET           : A-Z , a-z NUMBER              : 0-9 (with precision and scale) DATE / Temporal  : any Date and time (Hours, Minutes, Seconds, Mili-seconds, Timestamp, Timezone etc)   Alphabet + Number = Alphanumeric Data                                     = String / CHARACTER Datatype Category Number                    =  Numeric Datatype Category Date                         = Date Datatype Category 1. CHARACTER Datatype: CHAR, VARCHAR, NCHAR: CHAR is fixed length datatype and VARCHAR is Variable length datatype to store character data. i.e. A-Z , a-z , 0-9 , all keyboard characters etc. The default size is 1 character and it can store maximum up to 2000 bytes. Example : EName, EmpID, PassportNo, SSN, etc. EName CHAR(10) := ‘TOM’; wastage of 7 space after the string EName VARCHAR(10) := ‘TOM’; Spaces can be Reuse which left after the string NCHAR additionally handles NLS(National Language Support). Oracle supports a reliable Unicode datatype through NCHAR , NVARCHAR2 , and NCLOB  VARCHAR2, NVARCHAR2: These are Variable length datatype. VARCHAR2 handles alphanumeric character string whereas NVARCHAR2 handles alphanumeric character string with NLS(National Language Support). The default size is 1 character and it can store maximum up to 4000 bytes.   LONG:  Variable length string.  (Maximum size: 2 GB - 1) Only one LONG column is allowed per table. RAW:    Variable length binary string (Maximum size 2000 bytes) LONG RAW: Variable length binary string (Maximum size 2GB) 2. NUMERIC Datatype: NUMBER: It stores Numeric values and performs numeric calculations. NUMBER,   NUMBER(n),   NUMBER(p,s) It stores Numbers up to 38 digits of precision. SeqNo NUMBER;                     1, 123, 12345678 EmpID NUMBER(4);                 1, 123, 1234 Sal NUMBER(7,2);                     23456.78 , 123.45 — correction in video: Sal NUMBER(a7,2); which is wrong please ignore. 1234567 can be a type of NUMBER, NUMBER(7), NUMBER(7,0) It can store both integer and floating point numbers NUMERIC(p,s) FLOAT:   Ex:  EmpSal FLOAT;    FLOAT(7)       Decimal Points allowed DEC(p,s), DECIMAL(p,s) , REAL, DOUBLE PRECISION INTEGER:   Ex:  SSN INTEGER;       Decimal Points are not allowed INT, SMALLINT 3. DATE Datatype: DATE: It stores DATE(Date, Month, Year) and Time(Hour, Minute, Second, AM/PM) and performs calculations with such data. Default DATE format in Oracle is “DD-MON-YY” Based on "Gregorian calendar" where the date ranges from “JAN 1 4712 BC” to “DEC 31 9999 AD” doj DATE;    “18-MAR-2010 12:30:00 PM” TIMESTAMP:    It can store all parameters as DATE datatype and additionally it can have “Fraction of seconds” and TIMESTAMP WITH TIMEZONE / TIMESTAMP WITHOUT TIMEZONE. Range from 0-9 digits, the default size is 6. 4. LOB Datatype: LOB: “Large Object” data. It can store pictures, motion pictures, Textfiles etc. CLOB: “Character Large Object” is used to store structured information like a text file with a specific file format. BLOB: “Binary Large Object” is used to store Un-structured information like Image, JPEG files, MPEG files etc. BFILE: “Binary File” is used to store the pointer to a specific file / Just store the location of a file. Maximum size: (4 GB - 1) * DB_BLOCK_SIZE initialization parameter (8 TB to 128 TB) Extra Information: NCLOB : It supports all the character set supported by CLOB and additionally it handles NLS(National Language Support ) Maximum size: (4 GB - 1) * DB_BLOCK_SIZE initialization parameter (8 TB to 128 TB) ROWID and UROWID(optional size) Datatype: contains fixed length Binary data. BBBBBBB.RRRR.FFFFF combination of BLOCK-ROW-DATABASE FILE Physical and Logical ROWID Upcoming Session: Session 7: Populating Data into Tables(INSERT Statement): Inserting data into all columns of a table Inserting data into Required columns of a table Inserting NULL value into a table Inserting Special Values(USER / SYSDATE) into a table Supplying data at runtime(using & and &&) THANK YOU :)
Views: 80 Prabhat Sahu
MySQL Data Types 1 - Char and Varchar
 
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Donate!: http://bit.ly/DonateCTVM2. Videos Available for Download - http://www.udemy.com/calebthevideomaker2-database-and-mysql-classes/ Playlist - http://www.youtube.com/watch?v=krx-w9icrkU&list=PL405B31DD586979DE Welcome to your very first video in this series, MySQL Datatypes! Please subscribe and like my videos, it means a TON to me. Thanks :) This is simply a small course to introduce you to all of the datatypes(excluding spatial, which I will not be covering in this course). All of the datatypes are broken into 4 sections, these are Numeric, Date and Time, String, and Spatial. In all, these are the datatypes I will be covering: tinyint, smallint, mediumint, int, bigint, decimal, float, double, real, bit, boolean, serial, date, datetime, timestamp, time, year, char, varchar, tinytext, text, mediumtext, longtext, binary, varbinary, tinyblob, mediumblob, blob, longblob, enum, and set. Wooah that's a lot. haha. I will not be going over geometry, point, linestring, polygon, multipoint, or multilinestring. If you want to learn more about Spatial types, start here: http://dev.mysql.com/doc/refman/5.6/en/mysql-spatial-datatypes.html Want more information about what is covered in these videos? Always be sure to read the supporting page in the MySQL manual. http://dev.mysql.com/doc/refman/5.6/en/index.html Video information: Char and Varchar ___________________________ Char has a character range from 0 up to 255, varchar allows up to 65535. a max length can be specified in parenthesis such as char(40). char is right padded to fit the specified amount of characters, and the spaces are then removed on retrieval. Only trailing spaces will be removed. for example. Cat_hat__ will come out as cat_hat. This can be a bad thing if you need to store spaces. you will need to use varchar instead. If a value entered is too long, it will be "truncated," or cut to length. Extra info ________ a character set is an allowed range of characters that are entered into an entry. such as UTF-8. Utf 8 is 3 bytes for every character. the storing information for varchar and char are like this.. char - string length. varchar - string length+1. A 10 character entry using UTF-8 would then take 30 bytes in char, and 31 bytes in varchar, but if only 5 characters are entered, it will be 30 bytes for char, and 16 for varchar. This is because char stores the trailing spaces till the requested size is full (in this case 10). A table maximum row size is 65535, so this means if you have a varchar 65535 that is completely full in one column, that is the max allowed stored across that column. Any corrections needing made in these videos please message me. Thank you! More content: http://CalebCurry.com Facebook: http://www.facebook.com/CalebTheVideoMaker Google+: https://plus.google.com/+CalebTheVideoMaker2 Twitter: http://Twitter.com/calebCurry Subscribe (it's free!): http://bit.ly/PqPyvH Amazing Web Hosting - http://bit.ly/ccbluehost (The best web hosting for a cheap price!)
Views: 14346 Caleb Curry
Every VARCHAR2(N) Declaration a Bug in PL/SQL!?
 
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Every VARCHAR2(N) Declaration a Bug!? 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 how to fix this problem. See the Practically Perfect PL/SQL YouTube channel for related videos. https://www.youtube.com/channel/UCpJpLMRm452kVcie3RpINPw ============================================ 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.
Oracle SQL Tutorial 31 - NCHAR Part 2
 
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This video is going to be part 2 of NCHAR. That's because I have a bit more things to say about it before we move on to other data types. The first thing I wanted to mention is that if you declare an NCHAR(50), it is going to always be 50 characters. You do not need to use the CHAR or BYTE keyword in parenthesis to specify which you would like. We've said that NCHAR uses Unicode, but as we've learned in the last video, there are many character sets that use Unicode. Which character set is NCHAR going to use? That decision is based off of what your database's national character set is. So for every database you can declare a database character set and you can declare a national character set. The national character set is what is used for this data type. There are two options for the national character set, AL16UTF16, and UTF8. The default is AL16UTF16, which uses the utf-16 encoding. The Oracle docs has a lot of pros and cons for each one, but in general the defaults are default for a reason, so AL16UTF16 usually works fine. Now, a few videos ago I made a comment about the CHAR and NCHAR data types and how they might not be recommended. Why so? The reason is that CHAR is secretly just a VARCHAR2 that is padded to take up a full length. It does not save space nor improve performance in the database, so the chances are you are never going to want to use it. That being said, everything you've learned has not been a waste because a lot can be applied to the VARCHAR2 and NVARCHAR2 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: 3298 Caleb Curry
Find Special Character in a string using Sql
 
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In this video we learn how to find the special character , number in a string using sql server. -- How to Find Number and character in a string SELECT Employeeid,LastName FROM Employees WHERE LastName like '%[^0-9A-Z]%' -- How to find Special Character in a string SELECT Employeeid,LastName FROM Employees WHERE LastName like '%[@,#,$,%,*]%' -- How to find number in a string SELECT Employeeid,LastName FROM Employees WHERE LastName like '%[0-9]%'
Views: 1661 SmartCode
Oracle DUMP Function
 
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https://www.databasestar.com/oracle-dump/ The Oracle DUMP function tells you the data type of an expression you specify. Specifically, this function returns a string that explains what type of data it is, along with the length, and an internal representation. The syntax of the DUMP function is: DUMP ( expression [, return_format] [, start_position] [, length] ) The parameters of this function are: - expression: this is the expression that will be looked at and will have information displayed from this function. It can be a column or any other kind of expression. - return_format: this is the format of the data to return. - start_position: this is the starting position of the expression to return the internal representation for. Does not impact the data type shown. - length: this is the length from the start_position that the internal representation of the expression is shown for. The DUMP function returns a VARCHAR2 data type. For more information about the Oracle DUMP function, including all of the SQL shown in this video and the examples, read the related article here: https://www.databasestar.com/oracle-dump/
Views: 53 Database Star
Difference between char,nchar,varchar,nvarchar in SqlServer
 
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Compleate diffrence between char,nchar,varchar,nvarchar in SqlServer
Views: 13822 Tech mohan
LOWER and UPPER Function in SQL
 
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UPPER(): UPPER returns char, with all letters uppercase. char can be any of the datatypes CHAR, VARCHAR2, NCHAR, NVARCHAR2, CLOB, or NCLOB. The return value is the same datatype as char. The database sets the case of the characters based on the binary mapping defined for the underlying character set. LOWER(): LOWER returns char, with all letters lowercase. char can be any of the datatypes CHAR, VARCHAR2, NCHAR, NVARCHAR2, CLOB, or NCLOB. The return value is the same datatype as char. The database sets the case of the characters based on the binary mapping defined for the underlying character set. Thanks for watching...:)
Views: 1195 WingsOfTechnology
PL/SQL Tutorial 4 (Oracle): Substring Command
 
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PL/SQL Tutorial 4 (Oracle): Substring Command In this tutorial I show you how to use the Substring command in PL/SQL Source Code: https://github.com/mitchtabian/SQL-tutorials Subscribe to my Blog and YouTube channel to get notifications when new FREE coding tutorials are posted! Blog: http://www.codingwithmitch.com/
Views: 175 CodingWithMitch
Difference between Replace and Translate function in oracle
 
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This video demonstrates the difference between a replace function and a translate function in oracle using an suitable example. Both the function does a similar task, but has a lot of difference in implementation and output when used. Be learning the difference users can easy justify the correct scenarios on where to use translate and when to use replace. If you want more such videos of exciting and amazing 'difference between' concepts, check out the links below : union and union all : https://youtu.be/n9FqQOd8liY char and varchar2 : https://youtu.be/039qzwjWf4k procedure and function : https://youtu.be/q3LmOenL120 in and exists : https://youtu.be/REX4IjRYlFw rank and dense_rank : https://youtu.be/WGSX998hZ9M delete and truncate : https://youtu.be/u76wMm2byXo %type and %rowtype : https://youtu.be/MlLUFeZ_3eM
Views: 1936 Kishan Mashru
Funciones Oracle Upper, Lower, Inicap, Lentgh, Substr, To char
 
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En esta leccion veremos como podemos utilizar las funciones basicas de Oracle para hacer las consultas. Siguenos en - http://www.aprendedesarrollo.com/
Views: 1818 Alejandro Alvarez
SQL String Functions PART  -- 1
 
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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: 33 Technology mart
SQL function ASCII() , Char() With example in Hindi Part 1
 
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In this video, We will learn system define function of string ASCII() and Char() in SQL.
Count Number of Occurrences of a Character in String ASP.NET C#
 
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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: 1548 ASPNET WEBFORM
How to convert number to text in Oracle SQL
 
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How to convert number to text in Oracle SQL
Views: 441 Tanmun
Using LENGTH function
 
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Using LENGTH function
SQL 076 Numeric Scalar, CHAR_LENGTH or How many string characters?
 
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Explains the Numeric Scalar Function CHARACTER_LENGTH and CHAR_LENGTH for finding the number of characters in the strings or expressions. From http://ComputerBasedTrainingInc.com SQL Course. Learn by doing SQL commands for ANSI Standard SQL, Access, DB2, MySQL, Oracle, PostgreSQL, and SQL Server.
Views: 231 cbtinc
Interacting with SQL functions(ASCII(),CHAR(),BIN(),HEX(),OCT(),BIT_LENGTH(),CHAR_LENGTH())
 
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a few functions which are used in SQL, if you have any questions feel free to ask them in the comments.
Views: 270 Akash Zeus
Oracle LOWER Function
 
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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: 43 Database Star
Tutorial 10 : SQL LENGTH() Function - Part 1
 
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Hi Friends! Here we are learning about LENGTH() function in Oracle Database. Let me know for any confusion for any doubt. Thanks!
Views: 33 YourSmartCode

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