Won't filter the letter "a" ?

[Jonarod]

When I create a simple schema like this:

FT.CREATE test SCHEMA category TEXT SORTABLE subcategory TEXT SORTABLE

Then add entries:

FT.ADD test id_1 0.5 FIELDS category "a" subcategory "b"
FT.ADD test id_2 0.5 FIELDS category "b" subcategory "a"

Search works for "b":

FT.SEARCH test "@category:b" RETURN 0
1) (integer) 1
2) "id_2"

FT.SEARCH test "@subcategory:b" RETURN 0
1) (integer) 1
2) "id_1"

Search completely misses for "a":

FT.SEARCH test "@category:a" RETURN 0
1) (integer) 0  // SHOULD RETURN id_1

FT.SEARCH test "@subcategory:a" RETURN 0
1) (integer) 0  // SHOULD RETURN id_2

I have made several tests changing fields names, etc... it always comes down to the letter "a" being ignored by search: is there something I missed ?

[gkorland]

"a" is considered a stop word for tokenization
See: https://oss.redislabs.com/redisearch/Stopwords.html

You can disable these stop words by setting STOPWORDS 0 when creating the schema

[Jonarod]

Thanks for your lightening fast reply.

My bad... I thought stop words would have been considered only on fields labeled as PHONETIC 😓

I tried to use NOSTOPWORDS in my search, it throws the same result ignoring the letter "a"...

Is there a way to avoid re-indexing all my data set now?

[Jonarod]

I used STOPWORDS 0 at schema creation.