Split comma separated string table row into separate rows using TSQL

Question

Say I have a query that returns the following

ID       SomeValue
1        a,b,c,d
2        e,f,g

Id like to return this as follows:

Answer 1

You use cross apply. Something like this:

select t.id, s.val as SomeValue
from table t cross apply
     dbo.split(SomeValue, ',') as s(val);