In this post, I am providing a solution to split a string by using a different type of delimiters in PostgreSQL.
Splitting a string is a very common requirement for all PostgreSQL Database Developers.
I used regexp_split_to_array to split the string and store the result into a string array. You can pass any delimiters.

Below are two sample example using regexp_split_to_array():

SELECT 
	a[1] AS DiskInfo
	,a[2] AS DiskNumber
	,a[3] AS MessageKeyword
FROM (
    SELECT regexp_split_to_array('Postgres Disk information : disk 2 : failed', ':')
) AS dt(a)


SELECT 
	a[1] AS DiskInfo
	,a[2] AS DiskNumber
	,a[3] AS MessageKeyword
FROM (
    SELECT regexp_split_to_array('Postgres Disk information , disk 2 , failed', ',')
) AS dt(a)

The result:

In this post, I am providing one function to split string by using different type of delimiters and position in MySQL.

I have created this function because splitting a string is a very common requirement for all MySQL Database Developer.

I have created this function in such a way that you guys can pass any type of delimiter and split your string, but you also require to pass position to get exact value.

I have also created a similar kind of split function for SQL Server.
You can visit this article here:

For example, we have one column EmployeeName and it contains both Firstname and Lastname which is sperated by space. I require to create two column EmployeeFirstName and EmployeeLastName.

Below is a function and full demonstration of this:

First, Create a user defined function:

CREATE FUNCTION SplitString_ByAnyDelimiter
(
  InputString TEXT,
  InputDelimiter VARCHAR(8),
  InputPosition INT
)
RETURNS TEXT
RETURN 
REPLACE(SUBSTRING(SUBSTRING_INDEX(InputString, InputDelimiter, InputPosition),
       LENGTH(SUBSTRING_INDEX(InputString, InputDelimiter, InputPosition -1)) + 1),
       InputDelimiter, '');

Sample Executions:

SELECT SplitString_ByAnyDelimiter('Anvesh Patel', ' ', 1) AS FirstName

/* Result: 
FirstName
-----------
Anvesh
*/

SELECT SplitString_ByAnyDelimiter('Anvesh.Patel', '.', 2) AS LastName

/* Result: 
LastName
-----------
Patel
*/

SELECT SplitString_ByAnyDelimiter('Anvesh|Patel', '|', 1) AS FirstName

/* Result: 
FirstName
-----------
Anvesh
*/