Components: Natural Sorting in Material table

[rohitkrishna12]

Bug, feature request, or proposal:

Bug

What is the expected behavior?

Table to sort correctly alphanumeric characters within a column.

What is the current behavior?

Incorrectly sorts the data when alphanumeric characters are involved.

StackBlitz Example to reproduce the issue: https://stackblitz.com/edit/angular-zuxhe4

What is the use-case or motivation for changing an existing behavior?

To display sort results correctly in the table.

Which versions of Angular, Material, OS, TypeScript, browsers are affected?

Angular 6
Material 6.3.2
OS Windows 10
Typescript 2.9.2
Browsers - All

Is there anything else we should know?

[petivagyok16]

Im experiencing the same behavior. I have a table filled with identical names, but all of them have an alphanumberical suffix e.g.:

n1-highmem-64
n1-highmem-8
n1-highmem-96

And the sort header does not sort them correctly.

[crisbeto]

@rohitkrishna12 I can't reproduce the issue in your example. Here's what I get when I sort by weight:

[rohitkrishna12]

@crisbeto 2015-410 should follow with 2015-510 then 2015-4110 and same in case of 2016 the values are not sorted correctly. Please verify.

[bmercier-manakin]

@rohitkrishna12 Idk what you are expecting, but I guess, as your weight data are in strings, the screenshot of @crisbeto is totally correct:
'2015-410' < '2015-4110' < '2015-510':

If you want another sorting method, you have to implement it yourself or display another set of data (data in numbers for instance and displaying this format with a pipe)

[rohitkrishna12]

@bmercier-manakin i think i got this figured out by implementing custom sort algorithm by overrding sortData method from the MatTableDataSource class.

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