--
-- User preferences and perhaps other fun stuff. :)
-- Replaces the old user.user_options blob, with a couple nice properties:
--
-- 1) We only store non-default settings, so changes to the defauls
--    are now reflected for everybody, not just new accounts.
-- 2) We can more easily do bulk lookups, statistics, or modifications of
--    saved options since it's a sane table structure.
--
CREATE TABLE /*_*/user_properties (
  -- Foreign key to user.user_id
  up_user int NOT NULL,

  -- Name of the option being saved. This is indexed for bulk lookup.
  up_property varbinary(255) NOT NULL,

  -- Property value as a string.
  up_value blob
) /*$wgDBTableOptions*/;

CREATE UNIQUE INDEX /*i*/user_properties_user_property ON /*_*/user_properties (up_user,up_property);
CREATE INDEX /*i*/user_properties_property ON /*_*/user_properties (up_property);