If you can write an expression which returns the JSON attribute, yes, the (trivial) technique I described in the post can do that. I think that MySQL 5.7 JSON functions are not yet in MariaDB. But maybe they can be added easily?
Or again, maybe you can use MariaDB 10 regexp's?

Federico


--------------------------------------------
El sáb, 26/4/14, MARK CALLAGHAN <mdcallag@gmail.com> escribió:

 Asunto: [Maria-discuss] virtual columns and indexes on attributes in JSON      objects
 Para: "Maria Discuss" <maria-discuss@lists.launchpad.net>
 Fecha: sábado, 26 de abril, 2014 17:29

 Does the support for
 virtual columns allow an index to be created on an attribute
 in a JSON object stored in a BLOB column?

 http://falseisnotnull.wordpress.com/2014/04/25/descending-indexes-in-mariadb

 https://mariadb.com/kb/en/virtual-columns/

 --
 Mark Callaghan
 mdcallag@gmail.com

 -----Adjunto en línea a continuación-----

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