Fixed #11634 - Sort by numeric columns for numeric custom fields

[snipe]

This allows us to sort numerically on numeric custom fields. (Not 100% sure whether or not this could break on pgSQL, but seems to be okay on sqlite (though admittedly, we don't strongly test ordering currently.)

Fixes #15458 and #11634

[what-the-diff]

PR Summary

• Improved Customized Sorting: The software now has an improved ability to organize data according to specific criteria. This is particularly useful when dealing with numerical data.
• Adaptive Sorting Feature: Depending on the type of data it's dealing with, whether numerical or otherwise, the software can now adjust its sorting method for better performance and compatibility with databases.

[marcusmoore]

Interesting fix. Works for me (mysql) 👍🏾

[uberbrady]

I think this solves the problem pretty well for us like this. I'm a little uncomfortable with the * 1 thing, but it looks like the SQL-standard CAST(blah AS blah) syntax differs with each database (yuck), and this should hopefully be at least a little bit more standard. So I think it's a very clever way to handle this problem - the ways I were thinking about doing this were going to be much, much worse. So you've got a very clever, database-agnostic solution going here. Nice work!