Redis query with wildcard for Hash

Question

I have redis hashes as below.

HSET post:33 postId 33 title "Sumit Title 33"
HSET post:334 postId 334 title "Sumit Title 334"
HSET post:334 postId 22 title "Sumit Title 22"

It had an index like below -
FT.CREATE idx ON HASH PREFIX 1 "post:" SCHEMA postId TEXT SORTABLE title TEXT SORTABLE

Can you do a wildcard search like find all document with postId staring with '3' .. FT.SEARCH idx "@postId:3*" ?

Answer 1

Yes. If you index the post ID as text you can look for a prefix, and from version 2.6 for suffix, infix or wildcard matching.

You can read more on this syntax in the documentation.

Notice that there is a limit to the number of required characters before a prefix. From the documentations:

Prefixes are limited to 2 letters or more. You can change this number by using the MINPREFIX setting on the module command line.