EDUCBA

EDUCBA

MENUMENU
  • Blog
  • Free Courses
  • All Courses
  • All in One Bundle
  • Login
Home Data Science Data Science Tutorials Oracle Tutorial Oracle String Functions

Oracle String Functions

Priya Pedamkar
Article byPriya Pedamkar

Updated March 18, 2023

Oracle String Functions

Introduction To Oracle Strings Functions

Oracle has several functions to operate on string characters. Some of which are ‘Char’ to convert a number into a character, ‘Locate’ to locate a letter or a word in a string set, ‘Space’ to leave a blank space, ‘Length’ to get the number of characters in a string, ‘Replace’ to replace a word or a letter, ‘TRIM’ to remove a letter or a word from the start or end of a string, etc.

Start Your Free Data Science Course

Hadoop, Data Science, Statistics & others

Features of Oracle String Function

An oracle string function has special key features that are as under:

1. Contains

Contain String function followed by a pattern like >0; this means that for the particular row which was selected, the calculated score value greater than Zero.

Example: contains (text, ‘function’)>0

2. Equals

The equal string function comes into use to examine equality and to get an exact match which returns to a true value.

Example: Equals (text = ‘function’)

3. Ends with

This method finds the new value, which contains a string from starting.

Example: Ends with (<suffix>)

4. Starts with

This method gets the new value contains a starting string.

Example: Starts with(<prefix>)

5. EqualsignoreCase

The equal sign or case function is for comparing a particular string to others by ignoring the considerations of the case.

Example: EqualsIgnoreCase (String other string)

6. IsEmpty

The isEmpty function is come into use for the string to verify that the length () is zero.

Example: IsEmpty ()

7. Matches

The matches function is all about particular string matches with the regex(regular expression).

Example: Text.matches(regex,string)

8. Replace

Replace function is all about the string search-replace with string replacement in order to get char.

Example: Replace (char,<search string>,<replacement string>)

9. ReplaceAll

This Function is used to replaces all substring of the string which matches the given regex with the given replacement.

Example: ReplaceAll(<oldvalregex>,<newal>

10. Split

Splits the string around matches that given regular expression.

Example: Text.Split(<regexpattern>

String valuation consists of different parameter areas

  • For the variable during field validation: new value
  • Parameter name used to reclaim the value of the field after the form is submitted: old value
  • Before stored value during field validation, the variable names would be used instead of me string var

Oracle functions are sorted under different categories, and the string is of them. It can be used in SQL statements or questions of Oracle, programming environment of Oracle database such as saved triggers, functions and the procedures, etc. This article explains the fundamentals of the string functions. String functions are ASCII, ASCIISTR, CHR, COMPOSE, CONCAT, CONVERT, LENGTH 4, LENGTHB, LENGTHC, LOWER, LPAD, LTRIM, NCHR, REGEXP INSTR, VSIZE, REGEXP, REPLACE, REGEXP SUBSTR, RPAD, SOUNDEX, RTRIM, SUBSTR, TRIM, TRANSLATE, UPPER. The string functions used in programming culture, which help in smooth functioning.

Common Oracle String Functions

Below are the most common Oracle string functions which help in manipulating the string character effectively.

1. ASCII: The ASCII code comparable to the one character in the expression return.

Example: ASCII (‘a’)

2. Bit_Length: Return length in bits of a particular string; each Unicode value of the character is 2bytes in length (equal to 16bits)

Example: Bit_Length (‘abcdef’)

3. Char; It converts a numeric value to the analogous ASCII Character code.

Example: Char (35)

4. Char_Length: Blanks are not counted in string length. Return length in the number of characters of a particular string.

Example: Char_Length

5. Concat: Concat string function allows a particular string at one end and back to the same string.

Example: Concat (‘text a’). concat (‘text b’)

6. Insert: A specified string character into a particular location in other string characters.

Example: select insert (‘123456’),2, 3, ‘abcd’

7. Left: Specified number of character from the left of a string

Example: select left (‘123456’, 3)

8. Length: Return the length, number of character of a particular string. The length is returned to exclude any blank characters.

Example: Length (Customer_Name)

9. Locate: This function comes into use to search string in other string, but it is not found the string it returns to its original index that is 0.

Example: Locate (‘d’ ‘abcdef’)

10. LocateN: Return the numeric position of a string character in other character string. This includes an integer that enables to specify an initial position to start the search.

Example: Locate (‘d’, ‘abcdef’,3)

11. Lower: This converts a string character to lowercase

Example: Lower(Customer_Name)

12. Ortet_Length: Return a number of bytes of a particular string.

Example: Octet_Length (‘abcdef’)

13. Position; This function comes into use to find a substring from a string and search the location of the string in the substring. The function return to the position of starting character when the substring is equal to the found substring.

Example: Position (‘d’, ‘abcdef’)

14. Repeat: Repeat a particular expression pie times.

Example: Repeat (‘abc’,4)

15. Replace: Replace one or more character from a particular character expression with one or more characters.

Example: Replace (‘abc1234’, ‘123’ ,‘zz’)

16. Right: Return a particular number of characters from the right of the string.

Example: SELECT Right (‘123456’,3)

17. Space: Insert blank space

Example: Space (2)

18. Substring: This function permits you to excerpt substring from the original string.

Example: Substring (‘abcdef’)

19. SubstringN: SubstringN help you to get the length of the string, which includes an integer in the character number.

Example: Substring (‘abcdef’)

20. TrimBoth: Particular strips leading & trailing character from a character string.

Example: Trim (Both ‘_’ From ‘abcdef’)

21. TrimLeading: Particular strips leading characters from a character string.

Example: Trim (LEADING ‘_’ From ‘_abcdef_’)

22. Trim Trailing: Particular trailing characters from a character string.

Example: Trim (TRAILING ‘_’ From ‘abcdef_’)

23. Upper: It converts a string character to uppercase

Example: Upper (Cutomer_Name)

Conclusion

Oracle is one of the biggest software business providers that have a broad portfolio of services for all type of industry. Oracle string function helps clients to designed roadmaps, drift to the cloud and take benefit of loom technologies from any viewpoint; hybrid implementations, new cloud stationing, and on-campus environment. Oracle’s approach makes it simple for an organization to get initiated in the cloud and make it easier to bolster as the business grows.

Recommended Articles

This has been a guide to Oracle String Functions. Here we discussed how to use string functions in Oracle programming with the help of examples. You can also go through our other suggested articles to learn more–

  1. String Functions In Java With Examples
  2. VB.Net String Functions with Example
  3. C# String Functions With Example
  4. What is a Query and Types of Oracle Queries
  5. Guide to the Top 9 Oracle Clauses (Example)
GOLANG Course Bundle - 6 Courses in 1
23+ Hours of HD Videos
6 Courses
Verifiable Certificate of Completion
Lifetime Access
4.5
iOS DEVELOPER Course Bundle - 61 Courses in 1
147+ Hours of HD Videos
61 Courses
Verifiable Certificate of Completion
Lifetime Access
4.5
JAVA SERVLET Course Bundle - 18 Courses in 1 | 6 Mock Tests
56+ Hours of HD Videos
18 Courses
6 Mock Tests & Quizzes
Verifiable Certificate of Completion
Lifetime Access
4.5
RED HAT LINUX Course Bundle - 5 Courses in 1
28+ Hours of HD Videos
5 Courses
Verifiable Certificate of Completion
Lifetime Access
4.5
Primary Sidebar
Popular Course in this category
ORACLE DBA Database Management System Course Bundle - 2 Courses in 1
 20+ Hours of HD Videos
2 Courses
Verifiable Certificate of Completion
  Lifetime Access
4.5
Price

View Course
Footer
About Us
  • Blog
  • Who is EDUCBA?
  • Sign Up
  • Live Classes
  • Certificate from Top Institutions
  • Contact Us
  • Verifiable Certificate
  • Reviews
  • Terms and Conditions
  • Privacy Policy
  •  
Apps
  • iPhone & iPad
  • Android
Resources
  • Free Courses
  • Database Management
  • Machine Learning
  • All Tutorials
Certification Courses
  • All Courses
  • Data Science Course - All in One Bundle
  • Machine Learning Course
  • Hadoop Certification Training
  • Cloud Computing Training Course
  • R Programming Course
  • AWS Training Course
  • SAS Training Course

ISO 10004:2018 & ISO 9001:2015 Certified

© 2023 - EDUCBA. ALL RIGHTS RESERVED. THE CERTIFICATION NAMES ARE THE TRADEMARKS OF THEIR RESPECTIVE OWNERS.

Let’s Get Started

By signing up, you agree to our Terms of Use and Privacy Policy.

EDUCBA

*Please provide your correct email id. Login details for this Free course will be emailed to you

EDUCBA
Free Data Science Course

Hadoop, Data Science, Statistics & others

By continuing above step, you agree to our Terms of Use and Privacy Policy.
*Please provide your correct email id. Login details for this Free course will be emailed to you

EDUCBA

*Please provide your correct email id. Login details for this Free course will be emailed to you
EDUCBA

*Please provide your correct email id. Login details for this Free course will be emailed to you
EDUCBA Login

Forgot Password?

By signing up, you agree to our Terms of Use and Privacy Policy.

This website or its third-party tools use cookies, which are necessary to its functioning and required to achieve the purposes illustrated in the cookie policy. By closing this banner, scrolling this page, clicking a link or continuing to browse otherwise, you agree to our Privacy Policy

Loading . . .
Quiz
Question:

Answer:

Quiz Result
Total QuestionsCorrect AnswersWrong AnswersPercentage

Explore 1000+ varieties of Mock tests View more