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This tutorial shows you how to use Oracle SUBSTR() function to extract a substring from a string and gives you examples of using the function effectively.
Using a combination of SUBSTR, INSTR, and NVL (for strings without an underscore) will return what you want: SELECT NVL(SUBSTR('ABC_blah', 0, INSTR('ABC_blah', '_')-1), 'ABC_blah') AS output FROM DUAL
The Oracle/PLSQL SUBSTR functions allows you to extract a substring from a string. Syntax. The syntax for the SUBSTR function in Oracle/PLSQL is: SUBSTR( string, start_position [, length ] ) Parameters or Arguments. string. The source string. start_position. The starting position for extraction. The first position in the string is always 1. length.
To find the index of the specific character, you can use the INSTR(column, character) function, where column is the literal string or the column from which you'd like to retrieve the substring, and character is the character at which you'd like to start the substring (here, @).
1 Ιουν 2023 · The Oracle SUBSTR function is used to get a smaller string (the substring) from within a larger string. Let’s take a look at how you can use it and some examples. Table of Contents. Purpose of the Oracle SUBSTR Function. SUBSTR Syntax and Parameters. How Can I Use Oracle SUBSTR To Remove the Last Character?
To get substrings from a string, you can use Oracle's built-in REGEXP_SUBSTR() function. It takes four arguments: The string to be searched for a substring. The regular expression; i.e., the pattern you'd like to find.
This function is widely used to extract a substring from another string. Its syntax is. SUBSTR(s, p, [l]) Where. s: It's the string from which you want to extract characters (sub-string) p: It's the position in the string from where you want to extract characters. l: [optional], The number of characters you want to return from the position p.
