@ImranA and @igorstar 

I repost my response here again:
to create materialized views, you could use CREATE OR REFRESH LIVE TABLE however according to the official docs:

• The CREATE OR REFRESH LIVE TABLE syntax to create a materialized view is deprecated. Instead, use CREATE OR REFRESH MATERIALIZED VIEW.

As you can, it's changed so folks won't get confused about the namings.

Let me know if this helps