tables.sql

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-- SQL to create the initial tables for the MediaWiki database.
-- This is read and executed by the install script; you should
-- not have to run it by itself unless doing a manual install.
-- This is the PostgreSQL version.
-- For information about each table, please see the notes in maintenance/tables.sql
-- Please make sure all dollar-quoting uses $mw$ at the start of the line
-- We can't use SERIAL everywhere: the sequence names are hard-coded into the PHP
-- TODO: Change CHAR to BOOL

BEGIN;
SET client_min_messages = 'ERROR';

CREATE SEQUENCE user_user_id_seq MINVALUE 0 START WITH 0;
CREATE TABLE "user" (
  user_id                   INTEGER  NOT NULL  PRIMARY KEY DEFAULT nextval('user_user_id_seq'),
  user_name                 TEXT     NOT NULL  UNIQUE,
  user_real_name            TEXT,
  user_password             TEXT,
  user_newpassword          TEXT,
  user_token                CHAR(32),
  user_email                TEXT,
  user_email_token          CHAR(32),
  user_email_token_expires  TIMESTAMPTZ,
  user_email_authenticated  TIMESTAMPTZ,
  user_options              TEXT,
  user_touched              TIMESTAMPTZ,
  user_registration         TIMESTAMPTZ
);
CREATE INDEX user_email_token_idx ON "user" (user_email_token);

-- Create a dummy user to satisfy fk contraints especially with revisions
INSERT INTO "user" VALUES
  (DEFAULT,'Anonymous','',NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,now(),now());

CREATE TABLE user_groups (
  ug_user   INTEGER      NULL  REFERENCES "user"(user_id) ON DELETE CASCADE,
  ug_group  TEXT     NOT NULL
);
CREATE UNIQUE INDEX user_groups_unique ON user_groups (ug_user, ug_group);

CREATE TABLE user_newtalk (
  user_id  INTEGER NOT NULL  REFERENCES "user"(user_id) ON DELETE CASCADE,
  user_ip  CIDR        NULL
);
CREATE INDEX user_newtalk_id_idx ON user_newtalk (user_id);
CREATE INDEX user_newtalk_ip_idx ON user_newtalk (user_ip);


CREATE SEQUENCE page_page_id_seq;
CREATE TABLE page (
  page_id            INTEGER        NOT NULL  PRIMARY KEY DEFAULT nextval('page_page_id_seq'),
  page_namespace     SMALLINT       NOT NULL,
  page_title         TEXT           NOT NULL,
  page_restrictions  TEXT,
  page_counter       BIGINT         NOT NULL  DEFAULT 0,
  page_is_redirect   CHAR           NOT NULL  DEFAULT 0,
  page_is_new        CHAR           NOT NULL  DEFAULT 0,
  page_random        NUMERIC(15,14) NOT NULL  DEFAULT RANDOM(),
  page_touched       TIMESTAMPTZ,
  page_latest        INTEGER        NOT NULL, -- FK?
  page_len           INTEGER        NOT NULL
);
CREATE UNIQUE INDEX page_unique_name ON page (page_namespace, page_title);
CREATE INDEX page_main_title         ON page (page_title) WHERE page_namespace = 0;
CREATE INDEX page_talk_title         ON page (page_title) WHERE page_namespace = 1;
CREATE INDEX page_user_title         ON page (page_title) WHERE page_namespace = 2;
CREATE INDEX page_utalk_title        ON page (page_title) WHERE page_namespace = 3;
CREATE INDEX page_project_title      ON page (page_title) WHERE page_namespace = 4;
CREATE INDEX page_random_idx         ON page (page_random);
CREATE INDEX page_len_idx            ON page (page_len);

-- Create a dummy page to satisfy fk contraints where a page_id of "0" is added
INSERT INTO page (page_id,page_namespace,page_title,page_random,page_latest,page_len)
VALUES (0,0,'',0.0,0,0);


CREATE SEQUENCE rev_rev_id_val;
CREATE TABLE revision (
  rev_id          INTEGER      NOT NULL  UNIQUE DEFAULT nextval('rev_rev_id_val'),
  rev_page        INTEGER          NULL  REFERENCES page (page_id) ON DELETE SET NULL,
  rev_text_id     INTEGER          NULL, -- FK
  rev_comment     TEXT,
  rev_user        INTEGER      NOT NULL  REFERENCES "user"(user_id),
  rev_user_text   TEXT         NOT NULL,
  rev_timestamp   TIMESTAMPTZ  NOT NULL,
  rev_minor_edit  CHAR         NOT NULL  DEFAULT '0',
  rev_deleted     CHAR         NOT NULL  DEFAULT '0'
);
CREATE UNIQUE INDEX revision_unique ON revision (rev_page, rev_id);
CREATE INDEX rev_timestamp_idx      ON revision (rev_timestamp);
CREATE INDEX rev_user_idx           ON revision (rev_user);
CREATE INDEX rev_user_text_idx      ON revision (rev_user_text);


CREATE SEQUENCE text_old_id_val;
CREATE TABLE "text" (
  old_id     INTEGER  NOT NULL  PRIMARY KEY DEFAULT nextval('text_old_id_val'),
  old_text   TEXT,
  old_flags  TEXT
);


CREATE TABLE archive (
  ar_namespace   SMALLINT     NOT NULL,
  ar_title       TEXT         NOT NULL,
  ar_text        TEXT,
  ar_comment     TEXT,
  ar_user        INTEGER          NULL  REFERENCES "user"(user_id) ON DELETE SET NULL,
  ar_user_text   TEXT         NOT NULL,
  ar_timestamp   TIMESTAMPTZ  NOT NULL,
  ar_minor_edit  CHAR         NOT NULL  DEFAULT '0',
  ar_flags       TEXT,
  ar_rev_id      INTEGER,
  ar_text_id     INTEGER
);
CREATE INDEX archive_name_title_timestamp ON archive (ar_namespace,ar_title,ar_timestamp);


CREATE TABLE pagelinks (
  pl_from       INTEGER   NOT NULL  REFERENCES page(page_id) ON DELETE CASCADE,
  pl_namespace  SMALLINT  NOT NULL,
  pl_title      TEXT      NOT NULL
);
CREATE UNIQUE INDEX pagelink_unique ON pagelinks (pl_namespace,pl_title,pl_from);

CREATE TABLE templatelinks (
  tl_from       INTEGER  NOT NULL  REFERENCES page(page_id) ON DELETE CASCADE,
  tl_namespace  TEXT     NOT NULL,
  tl_title      TEXT     NOT NULL
);
CREATE UNIQUE INDEX templatelinks_unique ON templatelinks (tl_namespace,tl_title,tl_from);

CREATE TABLE imagelinks (
  il_from  INTEGER  NOT NULL  REFERENCES page(page_id) ON DELETE CASCADE,
  il_to    TEXT     NOT NULL
);
CREATE UNIQUE INDEX il_from ON imagelinks (il_to,il_from);

CREATE TABLE categorylinks (
  cl_from       INTEGER      NOT NULL  REFERENCES page(page_id) ON DELETE CASCADE,
  cl_to         TEXT         NOT NULL,
  cl_sortkey    TEXT,
  cl_timestamp  TIMESTAMPTZ  NOT NULL
);
CREATE UNIQUE INDEX cl_from ON categorylinks (cl_from, cl_to);
CREATE INDEX cl_sortkey     ON categorylinks (cl_to, cl_sortkey);

CREATE TABLE externallinks (
  el_from   INTEGER  NOT NULL  REFERENCES page(page_id) ON DELETE CASCADE,
  el_to     TEXT     NOT NULL,
  el_index  TEXT     NOT NULL
);
CREATE INDEX externallinks_from_to ON externallinks (el_from,el_to);
CREATE INDEX externallinks_index   ON externallinks (el_index);

CREATE TABLE langlinks (
  ll_from    INTEGER  NOT NULL  REFERENCES page (page_id) ON DELETE CASCADE,
  ll_lang    TEXT,
  ll_title   TEXT
);
CREATE UNIQUE INDEX langlinks_unique ON langlinks (ll_from,ll_lang);
CREATE INDEX langlinks_lang_title    ON langlinks (ll_lang,ll_title);


CREATE TABLE site_stats (
  ss_row_id         INTEGER  NOT NULL  UNIQUE,
  ss_total_views    INTEGER            DEFAULT 0,
  ss_total_edits    INTEGER            DEFAULT 0,
  ss_good_articles  INTEGER            DEFAULT 0,
  ss_total_pages    INTEGER            DEFAULT -1,
  ss_users          INTEGER            DEFAULT -1,
  ss_admins         INTEGER            DEFAULT -1,
  ss_images         INTEGER            DEFAULT 0
);

CREATE TABLE hitcounter (
  hc_id  BIGINT  NOT NULL
);


CREATE SEQUENCE ipblocks_ipb_id_val;
CREATE TABLE ipblocks (
  ipb_id           INTEGER      NOT NULL  PRIMARY KEY DEFAULT nextval('ipblocks_ipb_id_val'),
  ipb_address      CIDR             NULL,
  ipb_user         INTEGER          NULL  REFERENCES "user"(user_id) ON DELETE SET NULL,
  ipb_by           INTEGER      NOT NULL  REFERENCES "user"(user_id) ON DELETE CASCADE,
  ipb_reason       TEXT         NOT NULL,
  ipb_timestamp    TIMESTAMPTZ  NOT NULL,
  ipb_auto         CHAR         NOT NULL  DEFAULT '0',
  ipb_expiry       TIMESTAMPTZ  NOT NULL,
  ipb_range_start  TEXT,
  ipb_range_end    TEXT
);
CREATE INDEX ipb_address ON ipblocks (ipb_address);
CREATE INDEX ipb_user    ON ipblocks (ipb_user);
CREATE INDEX ipb_range   ON ipblocks (ipb_range_start,ipb_range_end);


CREATE TABLE image (
  img_name         TEXT      NOT NULL  PRIMARY KEY,
  img_size         SMALLINT  NOT NULL,
  img_width        SMALLINT  NOT NULL,
  img_height       SMALLINT  NOT NULL,
  img_metadata     TEXT,
  img_bits         SMALLINT,
  img_media_type   TEXT,
  img_major_mime   TEXT                DEFAULT 'unknown',
  img_minor_mime   TEXT                DEFAULT 'unknown',
  img_description  TEXT      NOT NULL,
  img_user         INTEGER       NULL  REFERENCES "user"(user_id) ON DELETE SET NULL,
  img_user_text    TEXT      NOT NULL,