T-SQL函数将带有两个定界符的字符串拆分为表中的列分隔符

Question

I'm looking for a t-sql function to get a string like:

a:b,c:d,e:f

and convert it to a table like

ID     Value

a      b

c      d

e      f

Anything I found in Internet incorporated single column parsing (eg XMLSplit function variations) but none of them letting me describe my string with two delimiters, one for column separation & the other for row separation.

Can you please guiding me regarding the issue? I have a very limited t-sql knowledge and cannot fork those read-made functions to get two column solution?

Answer 1

You can find a split() function on the web. Then, you can do string logic:

select left(val, charindex(':', val)) as col1,
       substring(val, charindex(':', val) + 1, len(val)) as col2
from dbo.split(@str, ';') s(val);

Answer 2

You can use a custom SQL Split function in order to separate data-value columns Here is a sql split function that you can use on a development system It returns an ID value that can be helpful to keep id and value together

You need to split twice, first using "," then a second split using ";" character

declare @str nvarchar(100) = 'a:b,c:d,e:f'
select
    id = max(id),
    value = max(value)
from (
select 
    rowid,
    id = case when id = 1 then val else null end,
    value = case when id = 2 then val else null end
from (
select 
    s.id rowid, t.id, t.val
from (
    select * from dbo.Split(@str, ',')
) s
cross apply dbo.Split(s.val, ':') t
) k
) m group by rowid