如何使用SQL对列包含varchar和numeric的升序排序列？

Question

Actually my column is in varchar, and it has numeric and varchar type data, i just wanted to sort numeric first then varchar type.

I refered and got this:

 SELECT
 ...
ORDER BY
  CASE 
    WHEN ISNUMERIC(value) = 1 THEN CONVERT(INT, value) 
    ELSE 9999999 -- or something huge
  END,
  value

It works, but why we need to use ELSE 9999999 here, instead what we can replace...?

Any solution for this...!

Answer 1

You could use:

SELECT *
FROM tab
ORDER BY IIF(TRY_CAST(val AS INT) IS NULL, 1, 0),TRY_CAST(val AS INT);

DBFiddle Demo

Answer 2

You can try this as an alternative solution.

SELECT
...
ORDER BY
  ISNUMERIC(value) DESC
  , CASE 
    WHEN ISNUMERIC(value) = 1 THEN CONVERT(INT, value) 
  END
  ,value