wiki.techinc.nl/maintenance/postgres/archives/patch-protected_titles.sql

CREATE TABLE protected_titles (
  pt_namespace   SMALLINT    NOT NULL,
  pt_title       TEXT        NOT NULL,
  pt_user        INTEGER         NULL  REFERENCES mwuser(user_id) ON DELETE SET NULL,
  pt_reason      TEXT            NULL,
  pt_timestamp   TIMESTAMPTZ NOT NULL,
  pt_expiry      TIMESTAMPTZ     NULL,
  pt_create_perm TEXT        NOT NULL DEFAULT ''
);
CREATE UNIQUE INDEX protected_titles_unique ON protected_titles(pt_namespace, pt_title);