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Editorial Team
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Asked: 2026-06-12T10:25:24+00:00

In my database I have table with a name column containing grades, like 1.

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In my database I have table with a name column containing grades, like 1. grade, 2. grade, and so on. When the numbers have reached 10 or more, the sorting doesn’t work as I would like, as 10. grade comes before 2. grade in the sorted recordset. I know this is because string sorting is different from integer sorting. The question is how to sort these strings in a numeric way.

Because the grade-records are a part of a tree buildt with the ancestry plugin, I have to put the whole sorting code inside :order => “(some code that sorts the results)”.

I have tried :order => "CAST(SUBSTRING_INDEX(name, '.') AS SIGNED)". But this doesn’t work.

I use SQLite in my development environment and MySQL in the production environment.

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1 Answer

  1. Editorial Team

    try this:

    replace the constant vale ‘. grade’ of your column with empty string, then you get the numeric value. cast the same to int 

    order by cast(replace(name,'. grade','') as int)

    EDIT:

    as per your comment if its not ‘grade’ always, then try

    order by cast(left(name,LOCATE('.',name,1)-1) as  UNSIGNED)

    SQL fiddle demo

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