Using T-SQL, return nth delimited element from a string

Question

I have a need to create a function the will return nth element of a delimited string.

For a data migration project, I am converting JSON audit records stored in a S

Answer 1

you can put this select into UFN. if you need you can customize it for specifying delimiter as well. in that case your ufn will have two input. number Nth and delimiter to use.

    DECLARE @tlist varchar(max)='10,20,30,40,50,60,70,80,90,100'
    DECLARE @i INT=1, @nth INT=3
    While len(@tlist) <> 0
    BEGIN
            IF @i=@nth
            BEGIN
              select Case when charindex(',',@tlist) <> 0 Then LEFT(@tlist,charindex(',',@tlist)-1)
                          Else @tlist
                    END
            END

              Select @tlist = Case when charindex(',',@tlist) <> 0 Then substring(@tlist,charindex(',',@tlist)+1,len(@tlist))
                          Else ''
                          END

            SELECT @i=@i+1
    END