How to meta_name=value exact matches only?

[bizt]

I have the following-like URL:

https://fback.example.com/s/search.json?collection=mycollection&query=!showall&num_ranks=1000&profile=_default&..&meta_fac=Science

I only want to have results that have fac="Science" exact value only, I don't want to match e.g. "Humanities & Social Sciences" because it has "Science" in the string. However, I'm seeing results with this included.

How do I just query on fac="Science" only?

[plevan]

The only way you'll be able to do this is to make use of the query boundary operators - $++.

Think of these as a special type of quote.

If you search for meta_fac=$++ Science $++ you should get what you want.

Note you'll need to appropriate encode (e.g. URL encode if you dump that into a URL param)