sql用多个小数对varchar进行数字排序

Question

I have a varchar column containing

0.1
0.8
0.2
Drr
0.11
0.8.1
0.8.2
0.2.1

How do I sort it to get results like this please?

0.1
0.2
0.2.1
0.8
0.8.1
0.8.2
0.11
Drr

Thanks

Answer 1

you may try this:

WITH isContainAlpha AS
(
    SELECT  *,
            CASE WHEN version_no LIKE '%[a-z]%' THEN 1 ELSE 0 END AS withAlpha,
            CASE WHEN version_no LIKE '%[a-z]%' THEN '0' ELSE version_no END AS version_no_rewrite
    FROM tableOne
)
SELECT version_no
FROM isContainAlpha
ORDER BY withAlpha, CAST('/'+REPLACE(version_no_rewrite,'.','/')+'/' as hierarchyID)