How cast hierarchyid to int

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I want order hierarchyid field by asc, but i dont know how cast it to int

SQL

select Path.ToString() as Nomer ,
        Path,
        Name,
        Path.GetLevel() as Axixa

from Users order by cast(Path as nvarchar(100)) ASC;



/1/1/
/1/2/
/1/3/
/2/1/
/2/2/
/2/3/
-/214/1/-
-/214/2/-
/3/1/1/
/3/1/2/

should be so

/1/1/
/1/2/
/1/3/
/2/1/
/2/2/
/2/3/
/3/1/1/
/3/1/2/
/214/1/
/214/2/

Posted 13-Apr-15 2:01am

Member 11266633

Updated 13-Apr-15 2:02am

v2

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Comments

Nathan Minier 13-Apr-15 8:13am

Is there a compelling reason that you're trying to cast Path as nvarchar, when you're already selecting Nomer as a string value? Why not just ORDER BY Nomer?

2 solutions

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Richard Deeming · Answer 1 · 2015-04-13T08:55:00

Solution 2

No need to convert the column - just order by [Path], and the HierarchyID type will do the right thing:

SQL

SELECT
   Path.ToString() as Nomer,
   Path,
   Name,
   Path.GetLevel() as Axixa
FROM
   Users
ORDER BY
   Path
;

/*
Output:

/1/1/
/1/2/
/1/3/
/2/1/
/2/2/
/2/3/
/3/1/1/
/3/1/2/
/214/1/
/214/2/
*/

http://sqlfiddle.com/#!6/08c3e/1[^]

Posted 13-Apr-15 8:55am

Richard Deeming

Comments

Maciej Los 13-Apr-15 16:19pm

5ed!

dbrenth · Answer 2 · 2015-04-13T08:09:00

Solution 1

You can use functions in the order by to help out. Here it assumes your largest path is 3 characters. If you like more add more 0's and change the 3's to the number of 0's.

Good Luck

SQL

ORDER BY RIGHT('000'+CAST(Path AS VARCHAR(3)),3) ASC

Posted 13-Apr-15 8:09am

dbrenth