Konvertera okänt antal kommaseparerade varchar inom en kolumn till flera kolumner

Jag gjorde ett antagande när jag skapade det här svaret, vilket är att du behöver detta som en separat lagrad proc.

Steg 1

Skapa en datatyp för att möjliggöra användningen av att skicka en tabellvärderad parameter (TVP) till en lagrad proc.

use db_name
GO
create type axisTable as table 
    (
        axis1 varchar(max)
    )
GO

Steg 2

Skapa proceduren för att analysera värdena.

USE [db_name]
GO

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

CREATE PROCEDURE [dbo].[usp_util_parse_out_axis] 
    (
        @axis_tbl_prelim axisTable readonly
    )
AS
BEGIN
    -- SET NOCOUNT ON added to prevent extra result sets from
    -- interfering with SELECT statements.
    SET NOCOUNT ON;

    declare @axis_tbl axisTable

    --since TVP's are readonly, moving the data in the TVP to a local variable
    --so that the update statement later on will work as expected
    insert into @axis_tbl
    select *
    from @axis_tbl_prelim

    declare @comma_cnt int
        , @i int 
        , @sql_dyn nvarchar(max)
        , @col_list nvarchar(max)

    --dropping the global temp table if it already exists
    if object_id('tempdb..##axis_unpvt') is not null
        drop table ##axis_unpvt

    create table ##axis_unpvt
        (
            axis_nbr varchar(25)
            , row_num int
            , axis_val varchar(max)
        )

    --getting the most commas
    set @comma_cnt = (select max(len(a.axis1) - len(replace(a.axis1, ',', '')))
                        from @axis_tbl as a)

    set @i = 1
    while @i <= @comma_cnt + 1
    begin --while loop

        --insert the data into the "unpivot" table one parsed value at a time (all rows) 
        insert into ##axis_unpvt
        select 'axis' +  cast(@i as varchar(3))
        , row_number() over (order by (select 100)) as row_num --making sure the data stays in the right row
        , case when charindex(',', a.axis1, 0) = 0 and len(a.axis1) = 0 then NULL
                when charindex(',', a.axis1, 0) = 0 and len(a.axis1) > 0 then a.axis1
                when charindex(',', a.axis1, 0) > 0 then replace(left(a.axis1, charindex(',', a.axis1, 0)), ',', '')
                else NULL
        end as axis1
        from @axis_tbl as a

        --getting rid of the value that was just inserted from the source table
        update a
        set a.axis1 = case when charindex(',', a.axis1, 0) = 0 and len(a.axis1) > 0 then NULL
                           when charindex(',', a.axis1, 0) > 0 then rtrim(ltrim(right(a.axis1, (len(a.axis1) - charindex(',', a.axis1, 0)))))
                           else NULL
                      end
        from @axis_tbl as a
        where 1=1
        and (charindex(',', a.axis1, 0) = 0 and len(a.axis1) > 0
             or charindex(',', a.axis1, 0) > 0) 

        --incrementing toward terminating condition
        set @i += 1

    end --while loop

    --getting list of what the columns will be after pivoting
    set @col_list = (select stuff((select distinct ', ' + axis_nbr
                            from ##axis_unpvt as a
                            for xml path ('')),1,1,''))

    --building the pivot statement
    set @sql_dyn = '
    select '
    + @col_list + 
    '
    from ##axis_unpvt as a
    pivot (max(a.axis_val)
            for a.axis_nbr in ('
                                + @col_list + 
                                ')) as p'

    --executing the pivot statement
    exec(@sql_dyn);

END

Steg 3

Gör ett proceduranrop med den datatyp som skapades i steg 1 som parameter.

use db_name
go

declare @tvp as axisTable

insert into @tvp values ('296.90, 309.4')
insert into @tvp values ('296.32, 309.81')
insert into @tvp values ('296.90')
insert into @tvp values ('300.11, 309.81, 311, 313.89, 314.00, 314.01, V61.8, V62.3')

exec db_name.dbo.usp_util_parse_out_axis @tvp

Resultaten från ditt exempel är följande: