--
-- ejabberd, Copyright (C) 2002-2021   ProcessOne
--
-- This program is free software; you can redistribute it and/or
-- modify it under the terms of the GNU General Public License as
-- published by the Free Software Foundation; either version 2 of the
-- License, or (at your option) any later version.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-- General Public License for more details.
--
-- You should have received a copy of the GNU General Public License along
-- with this program; if not, write to the Free Software Foundation, Inc.,
-- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
--

CREATE TABLE users (
    username varchar(191) NOT NULL,
    server_host varchar(191) NOT NULL,
    password text NOT NULL,
    serverkey varchar(128) NOT NULL DEFAULT '',
    salt varchar(128) NOT NULL DEFAULT '',
    iterationcount integer NOT NULL DEFAULT 0,
    created_at timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
    PRIMARY KEY (server_host(191), username)
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- Add support for SCRAM auth to a database created before ejabberd 16.03:
-- ALTER TABLE users ADD COLUMN serverkey varchar(64) NOT NULL DEFAULT '';
-- ALTER TABLE users ADD COLUMN salt varchar(64) NOT NULL DEFAULT '';
-- ALTER TABLE users ADD COLUMN iterationcount integer NOT NULL DEFAULT 0;

CREATE TABLE last (
    username varchar(191) NOT NULL,
    server_host varchar(191) NOT NULL,
    seconds text NOT NULL,
    state text NOT NULL,
    PRIMARY KEY (server_host(191), username)
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;


CREATE TABLE rosterusers (
    username varchar(191) NOT NULL,
    server_host varchar(191) NOT NULL,
    jid varchar(191) NOT NULL,
    nick text NOT NULL,
    subscription character(1) NOT NULL,
    ask character(1) NOT NULL,
    askmessage text NOT NULL,
    server character(1) NOT NULL,
    subscribe text NOT NULL,
    type text,
    created_at timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE UNIQUE INDEX i_rosteru_sh_user_jid ON rosterusers(server_host(191), username(75), jid(75));
CREATE INDEX i_rosteru_sh_username ON rosterusers(server_host(191), username);
CREATE INDEX i_rosteru_sh_jid ON rosterusers(server_host(191), jid);

CREATE TABLE rostergroups (
    username varchar(191) NOT NULL,
    server_host varchar(191) NOT NULL,
    jid varchar(191) NOT NULL,
    grp text NOT NULL
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE INDEX i_rosterg_sh_user_jid ON rostergroups(server_host(191), username(75), jid(75));

CREATE TABLE sr_group (
    name varchar(191) NOT NULL,
    server_host varchar(191) NOT NULL,
    opts text NOT NULL,
    created_at timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
    PRIMARY KEY (server_host(191), name)
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE UNIQUE INDEX i_sr_group_sh_name ON sr_group(server_host(191), name);

CREATE TABLE sr_user (
    jid varchar(191) NOT NULL,
    server_host varchar(191) NOT NULL,
    grp varchar(191) NOT NULL,
    created_at timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
    PRIMARY KEY (server_host(191), jid, grp)
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE UNIQUE INDEX i_sr_user_sh_jid_group ON sr_group(server_host(191), jid, grp);
CREATE INDEX i_sr_user_sh_jid ON sr_user(server_host(191), jid);
CREATE INDEX i_sr_user_sh_grp ON sr_user(server_host(191), grp);

CREATE TABLE spool (
    username varchar(191) NOT NULL,
    server_host varchar(191) NOT NULL,
    xml mediumtext NOT NULL,
    seq BIGINT UNSIGNED NOT NULL AUTO_INCREMENT UNIQUE,
    created_at timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE INDEX i_spool_sh_username USING BTREE ON spool(server_host(191), username);
CREATE INDEX i_spool_created_at USING BTREE ON spool(created_at);

CREATE TABLE archive (
    username varchar(191) NOT NULL,
    server_host varchar(191) NOT NULL,
    timestamp BIGINT UNSIGNED NOT NULL,
    peer varchar(191) NOT NULL,
    bare_peer varchar(191) NOT NULL,
    xml mediumtext NOT NULL,
    txt mediumtext,
    id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT UNIQUE,
    kind varchar(10),
    nick varchar(191),
    created_at timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE FULLTEXT INDEX i_text ON archive(txt);
CREATE INDEX i_archive_sh_username_timestamp USING BTREE ON archive(server_host(191), username(191), timestamp);
CREATE INDEX i_archive_sh_username_peer USING BTREE ON archive(server_host(191), username(191), peer(191));
CREATE INDEX i_archive_sh_username_bare_peer USING BTREE ON archive(server_host(191), username(191), bare_peer(191));
CREATE INDEX i_archive_sh_timestamp USING BTREE ON archive(server_host(191), timestamp);

CREATE TABLE archive_prefs (
    username varchar(191) NOT NULL,
    server_host varchar(191) NOT NULL,
    def text NOT NULL,
    always text NOT NULL,
    never text NOT NULL,
    created_at timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
    PRIMARY KEY (server_host(191), username)
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE TABLE vcard (
    username varchar(191) NOT NULL,
    server_host varchar(191) NOT NULL,
    vcard mediumtext NOT NULL,
    created_at timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
    PRIMARY KEY (server_host(191), username)
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE TABLE vcard_search (
    username varchar(191) NOT NULL,
    lusername varchar(191) NOT NULL,
    server_host varchar(191) NOT NULL,
    fn text NOT NULL,
    lfn varchar(191) NOT NULL,
    family text NOT NULL,
    lfamily varchar(191) NOT NULL,
    given text NOT NULL,
    lgiven varchar(191) NOT NULL,
    middle text NOT NULL,
    lmiddle varchar(191) NOT NULL,
    nickname text NOT NULL,
    lnickname varchar(191) NOT NULL,
    bday text NOT NULL,
    lbday varchar(191) NOT NULL,
    ctry text NOT NULL,
    lctry varchar(191) NOT NULL,
    locality text NOT NULL,
    llocality varchar(191) NOT NULL,
    email text NOT NULL,
    lemail varchar(191) NOT NULL,
    orgname text NOT NULL,
    lorgname varchar(191) NOT NULL,
    orgunit text NOT NULL,
    lorgunit varchar(191) NOT NULL,
    PRIMARY KEY (server_host(191), lusername)
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE INDEX i_vcard_search_sh_lfn       ON vcard_search(server_host(191), lfn);
CREATE INDEX i_vcard_search_sh_lfamily   ON vcard_search(server_host(191), lfamily);
CREATE INDEX i_vcard_search_sh_lgiven    ON vcard_search(server_host(191), lgiven);
CREATE INDEX i_vcard_search_sh_lmiddle   ON vcard_search(server_host(191), lmiddle);
CREATE INDEX i_vcard_search_sh_lnickname ON vcard_search(server_host(191), lnickname);
CREATE INDEX i_vcard_search_sh_lbday     ON vcard_search(server_host(191), lbday);
CREATE INDEX i_vcard_search_sh_lctry     ON vcard_search(server_host(191), lctry);
CREATE INDEX i_vcard_search_sh_llocality ON vcard_search(server_host(191), llocality);
CREATE INDEX i_vcard_search_sh_lemail    ON vcard_search(server_host(191), lemail);
CREATE INDEX i_vcard_search_sh_lorgname  ON vcard_search(server_host(191), lorgname);
CREATE INDEX i_vcard_search_sh_lorgunit  ON vcard_search(server_host(191), lorgunit);

CREATE TABLE privacy_default_list (
    username varchar(191) NOT NULL,
    server_host varchar(191) NOT NULL,
    name varchar(191) NOT NULL,
    PRIMARY KEY (server_host(191), username)
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE TABLE privacy_list (
    username varchar(191) NOT NULL,
    server_host varchar(191) NOT NULL,
    name varchar(191) NOT NULL,
    id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT UNIQUE,
    created_at timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE INDEX i_privacy_list_sh_username  USING BTREE ON privacy_list(server_host(191), username);
CREATE UNIQUE INDEX i_privacy_list_sh_username_name USING BTREE ON privacy_list (server_host(191), username(75), name(75));

CREATE TABLE privacy_list_data (
    id bigint,
    t character(1) NOT NULL,
    value text NOT NULL,
    action character(1) NOT NULL,
    ord NUMERIC NOT NULL,
    match_all boolean NOT NULL,
    match_iq boolean NOT NULL,
    match_message boolean NOT NULL,
    match_presence_in boolean NOT NULL,
    match_presence_out boolean NOT NULL
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE INDEX i_privacy_list_data_id ON privacy_list_data(id);

CREATE TABLE private_storage (
    username varchar(191) NOT NULL,
    server_host varchar(191) NOT NULL,
    namespace varchar(191) NOT NULL,
    data text NOT NULL,
    created_at timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
    PRIMARY KEY (server_host(191), username, namespace)
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE INDEX i_private_storage_sh_username USING BTREE ON private_storage(server_host(191), username);

-- Not tested in mysql
CREATE TABLE roster_version (
    username varchar(191) NOT NULL,
    server_host varchar(191) NOT NULL,
    version text NOT NULL,
    PRIMARY KEY (server_host(191), username)
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- To update from 1.x:
-- ALTER TABLE rosterusers ADD COLUMN askmessage text AFTER ask;
-- UPDATE rosterusers SET askmessage = '';
-- ALTER TABLE rosterusers ALTER COLUMN askmessage SET NOT NULL;

CREATE TABLE pubsub_node (
  host text NOT NULL,
  node text NOT NULL,
  parent VARCHAR(191) NOT NULL DEFAULT '',
  plugin text NOT NULL,
  nodeid bigint auto_increment primary key
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
CREATE INDEX i_pubsub_node_parent ON pubsub_node(parent(120));
CREATE UNIQUE INDEX i_pubsub_node_tuple ON pubsub_node(host(71), node(120));

CREATE TABLE pubsub_node_option (
  nodeid bigint,
  name text NOT NULL,
  val text NOT NULL
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
CREATE INDEX i_pubsub_node_option_nodeid ON pubsub_node_option(nodeid);
ALTER TABLE `pubsub_node_option` ADD FOREIGN KEY (`nodeid`) REFERENCES `pubsub_node` (`nodeid`) ON DELETE CASCADE;

CREATE TABLE pubsub_node_owner (
  nodeid bigint,
  owner text NOT NULL
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
CREATE INDEX i_pubsub_node_owner_nodeid ON pubsub_node_owner(nodeid);
ALTER TABLE `pubsub_node_owner` ADD FOREIGN KEY (`nodeid`) REFERENCES `pubsub_node` (`nodeid`) ON DELETE CASCADE;

CREATE TABLE pubsub_state (
  nodeid bigint,
  jid text NOT NULL,
  affiliation character(1),
  subscriptions VARCHAR(191) NOT NULL DEFAULT '',
  stateid bigint auto_increment primary key
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
CREATE INDEX i_pubsub_state_jid ON pubsub_state(jid(60));
CREATE UNIQUE INDEX i_pubsub_state_tuple ON pubsub_state(nodeid, jid(60));
ALTER TABLE `pubsub_state` ADD FOREIGN KEY (`nodeid`) REFERENCES `pubsub_node` (`nodeid`) ON DELETE CASCADE;

CREATE TABLE pubsub_item (
  nodeid bigint,
  itemid text NOT NULL,
  publisher text NOT NULL,
  creation varchar(32) NOT NULL,
  modification varchar(32) NOT NULL,
  payload mediumtext NOT NULL
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
CREATE INDEX i_pubsub_item_itemid ON pubsub_item(itemid(36));
CREATE UNIQUE INDEX i_pubsub_item_tuple ON pubsub_item(nodeid, itemid(36));
ALTER TABLE `pubsub_item` ADD FOREIGN KEY (`nodeid`) REFERENCES `pubsub_node` (`nodeid`) ON DELETE CASCADE;

CREATE TABLE pubsub_subscription_opt (
  subid text NOT NULL,
  opt_name varchar(32),
  opt_value text NOT NULL
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
CREATE UNIQUE INDEX i_pubsub_subscription_opt ON pubsub_subscription_opt(subid(32), opt_name(32));

CREATE TABLE muc_room (
    name text NOT NULL,
    host text NOT NULL,
    server_host varchar(191) NOT NULL,
    opts mediumtext NOT NULL,
    created_at timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE UNIQUE INDEX i_muc_room_name_host USING BTREE ON muc_room(name(75), host(75));

CREATE TABLE muc_registered (
    jid text NOT NULL,
    host text NOT NULL,
    server_host varchar(191) NOT NULL,
    nick text NOT NULL,
    created_at timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE INDEX i_muc_registered_nick USING BTREE ON muc_registered(nick(75));
CREATE UNIQUE INDEX i_muc_registered_jid_host USING BTREE ON muc_registered(jid(75), host(75));

CREATE TABLE muc_online_room (
    name text NOT NULL,
    host text NOT NULL,
    server_host varchar(191) NOT NULL,
    node text NOT NULL,
    pid text NOT NULL
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE UNIQUE INDEX i_muc_online_room_name_host USING BTREE ON muc_online_room(name(75), host(75));

CREATE TABLE muc_online_users (
    username text NOT NULL,
    server text NOT NULL,
    resource text NOT NULL,
    name text NOT NULL,
    host text NOT NULL,
    server_host varchar(191) NOT NULL,
    node text NOT NULL
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE UNIQUE INDEX i_muc_online_users USING BTREE ON muc_online_users(username(75), server(75), resource(75), name(75), host(75));
CREATE INDEX i_muc_online_users_us USING BTREE ON muc_online_users(username(75), server(75));

CREATE TABLE muc_room_subscribers (
   room varchar(191) NOT NULL,
   host varchar(191) NOT NULL,
   jid varchar(191) NOT NULL,
   nick text NOT NULL,
   nodes text NOT NULL,
   created_at timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
  UNIQUE KEY i_muc_room_subscribers_host_room_jid (host, room, jid)
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE INDEX i_muc_room_subscribers_host_jid USING BTREE ON muc_room_subscribers(host, jid);

CREATE TABLE motd (
    username varchar(191) NOT NULL,
    server_host varchar(191) NOT NULL,
    xml text,
    created_at timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
    PRIMARY KEY (server_host(191), username)
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE TABLE caps_features (
    node varchar(191) NOT NULL,
    subnode varchar(191) NOT NULL,
    feature text,
    created_at timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE INDEX i_caps_features_node_subnode ON caps_features(node(75), subnode(75));

CREATE TABLE sm (
    usec bigint NOT NULL,
    pid text NOT NULL,
    node text NOT NULL,
    username varchar(191) NOT NULL,
    server_host varchar(191) NOT NULL,
    resource varchar(191) NOT NULL,
    priority text NOT NULL,
    info text NOT NULL,
    PRIMARY KEY (usec, pid(75))
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE INDEX i_sm_node ON sm(node(75));
CREATE INDEX i_sm_sh_username ON sm(server_host(191), username);

CREATE TABLE oauth_token (
    token varchar(191) NOT NULL PRIMARY KEY,
    jid text NOT NULL,
    scope text NOT NULL,
    expire bigint NOT NULL
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE TABLE oauth_client (
    client_id varchar(191) NOT NULL PRIMARY KEY,
    client_name text NOT NULL,
    grant_type text NOT NULL,
    options text NOT NULL
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE TABLE route (
    domain text NOT NULL,
    server_host varchar(191) NOT NULL,
    node text NOT NULL,
    pid text NOT NULL,
    local_hint text NOT NULL
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE UNIQUE INDEX i_route ON route(domain(75), server_host(75), node(75), pid(75));
CREATE INDEX i_route_domain ON route(domain(75));

CREATE TABLE bosh (
    sid text NOT NULL,
    node text NOT NULL,
    pid text NOT NULL
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE UNIQUE INDEX i_bosh_sid ON bosh(sid(75));

CREATE TABLE proxy65 (
    sid text NOT NULL,
    pid_t text NOT NULL,
    pid_i text NOT NULL,
    node_t text NOT NULL,
    node_i text NOT NULL,
    jid_i text NOT NULL
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE UNIQUE INDEX i_proxy65_sid ON proxy65 (sid(191));
CREATE INDEX i_proxy65_jid ON proxy65 (jid_i(191));

CREATE TABLE push_session (
    username text NOT NULL,
    server_host varchar(191) NOT NULL,
    timestamp bigint NOT NULL,
    service text NOT NULL,
    node text NOT NULL,
    xml text NOT NULL,
    PRIMARY KEY (server_host(191), username(191), timestamp)
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE UNIQUE INDEX i_push_session_susn ON push_session (server_host(191), username(191), service(191), node(191));

CREATE TABLE mix_channel (
    channel text NOT NULL,
    service text NOT NULL,
    username text NOT NULL,
    domain text NOT NULL,
    jid text NOT NULL,
    hidden boolean NOT NULL,
    hmac_key text NOT NULL,
    created_at timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE UNIQUE INDEX i_mix_channel ON mix_channel (channel(191), service(191));
CREATE INDEX i_mix_channel_serv ON mix_channel (service(191));

CREATE TABLE mix_participant (
    channel text NOT NULL,
    service text NOT NULL,
    username text NOT NULL,
    domain text NOT NULL,
    jid text NOT NULL,
    id text NOT NULL,
    nick text NOT NULL,
    created_at timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE UNIQUE INDEX i_mix_participant ON mix_participant (channel(191), service(191), username(191), domain(191));
CREATE INDEX i_mix_participant_chan_serv ON mix_participant (channel(191), service(191));

CREATE TABLE mix_subscription (
    channel text NOT NULL,
    service text NOT NULL,
    username text NOT NULL,
    domain text NOT NULL,
    node text NOT NULL,
    jid text NOT NULL
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE UNIQUE INDEX i_mix_subscription ON mix_subscription (channel(153), service(153), username(153), domain(153), node(153));
CREATE INDEX i_mix_subscription_chan_serv_ud ON mix_subscription (channel(191), service(191), username(191), domain(191));
CREATE INDEX i_mix_subscription_chan_serv_node ON mix_subscription (channel(191), service(191), node(191));
CREATE INDEX i_mix_subscription_chan_serv ON mix_subscription (channel(191), service(191));

CREATE TABLE mix_pam (
    username text NOT NULL,
    server_host varchar(191) NOT NULL,
    channel text NOT NULL,
    service text NOT NULL,
    id text NOT NULL,
    created_at timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE UNIQUE INDEX i_mix_pam ON mix_pam (username(191), server_host(191), channel(191), service(191));
CREATE INDEX i_mix_pam_us ON mix_pam (username(191), server_host(191));

CREATE TABLE mqtt_pub (
    username varchar(191) NOT NULL,
    server_host varchar(191) NOT NULL,
    resource varchar(191) NOT NULL,
    topic text NOT NULL,
    qos tinyint NOT NULL,
    payload blob NOT NULL,
    payload_format tinyint NOT NULL,
    content_type text NOT NULL,
    response_topic text NOT NULL,
    correlation_data blob NOT NULL,
    user_properties blob NOT NULL,
    expiry int unsigned NOT NULL,
    UNIQUE KEY i_mqtt_topic_server (topic(191), server_host)
) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
