#community-help

Prioritising Email in Collections Using Typesense

TLDR Pankaj had an issue ranking user emails first in a collection. Jason explained how 'sort_by' works and suggested using the new filter-based sorting mechanism, specifically "sort_by": "_eval(has_email:true):asc,id:desc". Pankaj agreed to try this solution.

11mo

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Oct 26, 2022 (11 months ago)

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Pankaj

03:47 PM

Hi guys, i have a scenarios tried some ways but not able to get it right
my example collection

email 
id 
description

i want to rank the result where users with having email are ranked first with id desc

tried doing sort_by
email(missing_values:last):desc,
_text_match:desc,
id:desc

but looks like missing_values is last one to sort so it always like email desc any other ways this can be done ? thanks in advance

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Jason

04:42 PM

sort_by uses a tie-breaking to sort on multiple fields. So in your case it will first sort on email (and place missing values last), and then if two records tie by having the same email address, then _text_match is used to break the tie. And then if that also ties, then id is used to break the tie.

You could use the new filter-based sorting mechanism we’ve added in 0.24.0.rcn25 to implement your use case. Something like:

"sort_by": "_eval(has_email:true):asc,id:desc"

where has_email is a new boolean field you’ll have to create at indexing time to each record

Oct 27, 2022 (11 months ago)

Pankaj

06:07 PM

will try this. thank you 🙂

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