PostgreSQL – REVERSE Function

ByAdmin

The REVERSE function is used to reverse the order of characters in a given string. It takes a string as an argument and returns a new string with the characters reversed.

Here’s the basic syntax of the REVERSE function:

REVERSE(string)
  • string is the string that you want to reverse.

Here’s an example of using the REVERSE function:

SELECT REVERSE('Hello, World!'); -- Returns '!dlroW ,olleH'

In this example, the REVERSE function has reversed the characters in the input string ‘Hello, World!’.

You can use the REVERSE function with column values in a table as well. For instance, if you have a table named employees with a column named name, you can reverse the characters in the words like this:

SELECT REVERSE(name) FROM employees;

This query will return a result set with all the name values reversed.

The REVERSE function can be useful in various scenarios, such as when you need to manipulate or analyze strings in a reversed order.

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