postgresqlHow do I use regexp_replace in PostgreSQL?

regexp_replace is a function in PostgreSQL that allows you to replace a substring in a string using regular expressions. It takes three arguments: the string, the pattern to match, and the replacement string.

Example

SELECT regexp_replace('Hello World', 'World', 'PostgreSQL');

Output example

Hello PostgreSQL

The code above takes the string "Hello World" and replaces the substring "World" with the string "PostgreSQL".

The parts of the code are:

• regexp_replace: the function that performs the replacement
• 'Hello World': the string that contains the substring that needs to be replaced
• 'World': the substring that needs to be replaced
• 'PostgreSQL': the string that will be used to replace the substring

Helpful links

• PostgreSQL Documentation - regexp_replace

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