How To Split column In SQL

just found a good script://sqlservercodebook.blogspot.com/2008/03/how-to-split-column-in-sql.html



Suppose you have a column in a table that has multiple pieces of information in it that
I need to break out into various columns. The column is random but the
values I need to separate out are the number and the UN number as below:

245 HELIUM, COMPRESSED 2.2 UN1046


I need to separate the 2.2 and the UN1046 into different columns. How do I
parse this?
CREATE TABLE Inventory (ItemDescription VARCHAR(99))
INSERT Inventory VALUES ('245 HELIUM, COMPRESSED 2.2 UN1046' )
INSERT Inventory VALUES ('24adada5 HELIsadasdadUM, sdsdsd 6.6 UN99' )
INSERT Inventory VALUES ('24adada5 HELIsadasdadUM, sdsdsd 446.6777 UN9988888' )
INSERT Inventory VALUES ('24adada5 HEdUM, sdsdsd 446.0 UN9988' )


SELECT RIGHT(ItemDescription,PATINDEX('% %',
REVERSE(ItemDescription))-1) AS COL1,
LTRIM(REVERSE(LEFT(REVERSE(LEFT(ItemDescription,(LEN(ItemDescription)-PATINDEX('% %', REVERSE(ItemDescription))))),
PATINDEX('% %',REVERSE(LEFT(ItemDescription,(LEN(ItemDescription)-PATINDEX('% %', REVERSE(ItemDescription)))))))))
AS COL2
FROM Inventory