SQL-将具有多个定界符的字符串拆分为多行和多列

Question

I am trying to split a string in SQL with the following format: 'John, Mark, Peter|23, 32, 45' .

The idea is to have all the names in the first columns and the ages in the second column.

The query should be "dynamic", the string can have several records depending on user entries.

Does anyone know how to this, and if possible without SQL functions? I have tried the cross apply approach but I wasn't able to make it work.

Any ideas?

Answer 1

This solution uses Jeff Moden's DelimitedSplit8k . Why? Because his solution provides the ordinal position of the item. Ordinal Position something that many others functions, including Microsoft's own STRING_SPLIT , does not provide. It's going to be vitally important for getting this to work correctly.

Once you have that, the solution becomes fairly simple:

DECLARE @NameAges varchar(8000) = 'John, Mark, Peter|23, 32, 45';

WITH Splits AS (
    SELECT S1.ItemNumber AS PipeNumber,
           S2.ItemNumber AS CommaNumber,
           S2.Item
    FROM dbo.DelimitedSplit8K (REPLACE(@NameAges,' ',''), '|') S1 --As you have spaces between the delimiters I've removed these. Be CAREFUL with that
         CROSS APPLY DelimitedSplit8K (S1.item, ',') S2)
SELECT S1.Item AS [Name], 
       S2.Item AS Age
FROM Splits S1
     JOIN Splits S2 ON S1.CommaNumber = S2.CommaNumber
                   AND S2.PipeNumber = 2
WHERE S1.PipeNumber = 1;