SQL Split function that handles string with delimeter appearing between text qualifiers?

Question

There are several SQL split functions, from loop driven, to using xml commands, and even using a numbers table. I haven\'t found one that supports text qualifiers.

Usin

Answer 1

This is a quick solution, and it is less than perfect, it has no stack, so it will treat the comma inside the quotes as the delimiter.

alter function fnSplit
(
    @Delim char(1),
    @List nvarchar(4000)
)
returns table as
return
    with 
    Strings(PosIdx) as 
    (
        select 1 
        union all 
        select PosIdx + 1 from Strings where PosIdx < 4000
    )
    select
        ltrim(rtrim(substring(@List, PosIdx, charindex(@Delim, @List + @Delim, PosIdx) - PosIdx))) as value
    from   
        Strings
    where  
        PosIdx <= convert(int, len(@List))
    and substring(@Delim + @List, PosIdx, 1) = @Delim 
go
select * from fnSplit(',', 'jsmith@anywhere.com, "Sally \"Heat\" Jones" , "Mark Jones" , "Stone, Ron" ') 
    option (maxrecursion 0)