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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
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.
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.
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?
In this tutorial we have seen how to use SUBSTR function to extract characters from a given string. There is also another function, known as INSTR() which is used to check whether a substring occurs in a given string.
How to Extract a Substring From a String in Oracle or SQLite. Database: Oracle. SQLite. Operators: SUBSTR. INSTR. LENGTH. Table of Contents. Problem: You have a column of strings, and you'd like to get substrings from them. Example 1: In the emails table, there is an email column. You'd like to display the first seven characters of each email.
This Oracle tutorial explains how to use the Oracle / PLSQL REGEXP_SUBSTR function with syntax and examples. This function, introduced in Oracle 11g, will allow you to extract a substring from a string using regular expression pattern matching.
