MediaWiki database schema for IBM DB2

* removed all foreign keys not in MySQL schema
* reordered implicit order of columns in archive table to match MySQL
* added missing ss_active_users column to site_stats table
* added missing ipb_allow_usertalk column to ipblocks table

diff --git a/maintenance/ibm_db2/tables.sql b/maintenance/ibm_db2/tables.sql
index 9b629c2..659453c 100644 (file)
--- a/maintenance/ibm_db2/tables.sql
+++ b/maintenance/ibm_db2/tables.sql
@@ -43,7 +43,8 @@ NULL,                 NULL,                                                   NULL,                   NULL,                           CURRENT_timestamp,      0);
 
 
 CREATE TABLE user_groups (
-  ug_user   INTEGER    REFERENCES user(user_id) ON DELETE CASCADE,
+  ug_user   INTEGER NOT NULL DEFAULT 0,
+  --    REFERENCES user(user_id) ON DELETE CASCADE,
   ug_group  VARCHAR(255)     NOT NULL
 );
 CREATE UNIQUE INDEX user_groups_unique ON user_groups (ug_user, ug_group);
@@ -55,7 +56,8 @@ CREATE UNIQUE INDEX user_groups_include_idx
 
 CREATE TABLE user_newtalk (
   -- registered users key
-  user_id              INTEGER      NOT NULL  REFERENCES user(user_id) ON DELETE CASCADE,
+  user_id              INTEGER      NOT NULL DEFAULT 0,
+  --  REFERENCES user(user_id) ON DELETE CASCADE,
   -- anonymous users key
   user_ip              VARCHAR(40),
   user_last_timestamp  TIMESTAMP(3)
@@ -95,10 +97,12 @@ CREATE UNIQUE INDEX page_name_include
 
 CREATE TABLE revision (
   rev_id               INTEGER PRIMARY KEY GENERATED BY DEFAULT AS IDENTITY (START WITH 0),
-  rev_page        INTEGER      REFERENCES page (page_id) ON DELETE CASCADE,
+  rev_page        INTEGER NOT NULL DEFAULT 0,
+  --      REFERENCES page (page_id) ON DELETE CASCADE,
   rev_text_id     INTEGER, -- FK
   rev_comment     VARCHAR(1024),
-  rev_user        INTEGER      NOT NULL  REFERENCES user(user_id) ON DELETE RESTRICT,
+  rev_user        INTEGER      NOT NULL DEFAULT 0,
+  --  REFERENCES user(user_id) ON DELETE RESTRICT,
   rev_user_text   VARCHAR(255) NOT NULL,
   rev_timestamp   TIMESTAMP(3)    NOT NULL,
   rev_minor_edit  SMALLINT     NOT NULL  DEFAULT 0,
@@ -127,9 +131,9 @@ CREATE TABLE page_restrictions (
   --pr_id      INTEGER      NOT NULL  UNIQUE, --DEFAULT nextval('pr_id_val'),
   --pr_id      INTEGER PRIMARY KEY GENERATED BY DEFAULT AS IDENTITY (START WITH 0),
   pr_id                INTEGER PRIMARY KEY GENERATED BY DEFAULT AS IDENTITY (START WITH 0),
-  pr_page    INTEGER              NOT NULL
+  pr_page    INTEGER              NOT NULL DEFAULT 0,
   --(used to be nullable)
-    REFERENCES page (page_id) ON DELETE CASCADE,
+  --  REFERENCES page (page_id) ON DELETE CASCADE,
   pr_type    VARCHAR(60)         NOT NULL,
   pr_level   VARCHAR(60)         NOT NULL,
   pr_cascade SMALLINT             NOT NULL,
@@ -144,7 +148,8 @@ CREATE INDEX pr_level ON page_restrictions (pr_level);
 CREATE INDEX pr_cascade ON page_restrictions (pr_cascade);
 
 CREATE TABLE page_props (
-  pp_page      INTEGER  NOT NULL  REFERENCES page (page_id) ON DELETE CASCADE,
+  pp_page      INTEGER  NOT NULL DEFAULT 0,
+  -- REFERENCES page (page_id) ON DELETE CASCADE,
   pp_propname  VARCHAR(255)     NOT NULL,
   pp_value     CLOB(64K) INLINE LENGTH 4096     NOT NULL,
   PRIMARY KEY (pp_page,pp_propname) 
@@ -158,10 +163,10 @@ CREATE TABLE archive (
   ar_namespace   SMALLINT     NOT NULL,
   ar_title       VARCHAR(255)         NOT NULL,
   ar_text        CLOB(16M) INLINE LENGTH 4096,
-  ar_page_id     INTEGER,
-  ar_parent_id   INTEGER,
   ar_comment     VARCHAR(1024),
-  ar_user        INTEGER  REFERENCES user(user_id) ON DELETE SET NULL,
+  ar_user        INTEGER NOT NULL,
+  -- no foreign keys in MySQL
+  -- REFERENCES user(user_id) ON DELETE SET NULL,
   ar_user_text   VARCHAR(255)         NOT NULL,
   ar_timestamp   TIMESTAMP(3)  NOT NULL,
   ar_minor_edit  SMALLINT     NOT NULL  DEFAULT 0,
@@ -169,7 +174,9 @@ CREATE TABLE archive (
   ar_rev_id      INTEGER,
   ar_text_id     INTEGER,
   ar_deleted     SMALLINT     NOT NULL  DEFAULT 0,
-  ar_len         INTEGER
+  ar_len         INTEGER,
+  ar_page_id     INTEGER,
+  ar_parent_id   INTEGER
 );
 CREATE INDEX archive_name_title_timestamp ON archive (ar_namespace,ar_title,ar_timestamp);
 CREATE INDEX archive_user_text            ON archive (ar_user_text);
@@ -177,7 +184,8 @@ CREATE INDEX archive_user_text            ON archive (ar_user_text);
 
 
 CREATE TABLE redirect (
-  rd_from       INTEGER  NOT NULL  REFERENCES page(page_id) ON DELETE CASCADE,
+  rd_from       INTEGER  NOT NULL  PRIMARY KEY,
+  --REFERENCES page(page_id) ON DELETE CASCADE,
   rd_namespace  SMALLINT NOT NULL  DEFAULT 0,
   rd_title      VARCHAR(255)     NOT NULL DEFAULT '',
   rd_interwiki  varchar(32),
@@ -187,14 +195,16 @@ CREATE INDEX redirect_ns_title ON redirect (rd_namespace,rd_title,rd_from);
 
 
 CREATE TABLE pagelinks (
-  pl_from       INTEGER   NOT NULL  REFERENCES page(page_id) ON DELETE CASCADE,
+  pl_from       INTEGER   NOT NULL DEFAULT 0,
+  -- REFERENCES page(page_id) ON DELETE CASCADE,
   pl_namespace  SMALLINT  NOT NULL,
   pl_title      VARCHAR(255)      NOT NULL
 );
 CREATE UNIQUE INDEX pagelink_unique ON pagelinks (pl_from,pl_namespace,pl_title);
 
 CREATE TABLE templatelinks (
-  tl_from       INTEGER  NOT NULL  REFERENCES page(page_id) ON DELETE CASCADE,
+  tl_from       INTEGER  NOT NULL DEFAULT 0,
+  --  REFERENCES page(page_id) ON DELETE CASCADE,
   tl_namespace  SMALLINT NOT NULL,
   tl_title      VARCHAR(255)     NOT NULL
 );
@@ -202,14 +212,16 @@ CREATE UNIQUE INDEX templatelinks_unique ON templatelinks (tl_namespace,tl_title
 CREATE UNIQUE INDEX tl_from_idx ON templatelinks (tl_from,tl_namespace,tl_title);
 
 CREATE TABLE imagelinks (
-  il_from  INTEGER  NOT NULL  REFERENCES page(page_id) ON DELETE CASCADE,
+  il_from  INTEGER  NOT NULL  DEFAULT 0,
+  -- REFERENCES page(page_id) ON DELETE CASCADE,
   il_to    VARCHAR(255)     NOT NULL
 );
 CREATE UNIQUE INDEX il_from_idx ON imagelinks (il_to,il_from);
 CREATE UNIQUE INDEX il_to_idx ON imagelinks (il_from,il_to);
 
 CREATE TABLE categorylinks (
-  cl_from       INTEGER      NOT NULL  REFERENCES page(page_id) ON DELETE CASCADE,
+  cl_from       INTEGER      NOT NULL  DEFAULT 0,
+  -- REFERENCES page(page_id) ON DELETE CASCADE,
   cl_to         VARCHAR(255)         NOT NULL,
   cl_sortkey    VARCHAR(70),
   cl_timestamp  TIMESTAMP(3)  NOT NULL
@@ -220,7 +232,8 @@ CREATE INDEX cl_sortkey     ON categorylinks (cl_to, cl_sortkey, cl_from);
 
 
 CREATE TABLE externallinks (
-  el_from   INTEGER  NOT NULL  REFERENCES page(page_id) ON DELETE CASCADE,
+  el_from   INTEGER  NOT NULL DEFAULT 0,
+  -- REFERENCES page(page_id) ON DELETE CASCADE,
   el_to     VARCHAR(1024)     NOT NULL,
   el_index  VARCHAR(1024)     NOT NULL
 );
@@ -248,7 +261,8 @@ CREATE UNIQUE INDEX eu_wiki_id_idx
 
 
 CREATE TABLE langlinks (
-  ll_from    INTEGER  NOT NULL  REFERENCES page (page_id) ON DELETE CASCADE,
+  ll_from    INTEGER  NOT NULL DEFAULT 0,
+  -- REFERENCES page (page_id) ON DELETE CASCADE,
   ll_lang    VARCHAR(20),
   ll_title   VARCHAR(255)
 );
@@ -263,6 +277,7 @@ CREATE TABLE site_stats (
   ss_good_articles  INTEGER             DEFAULT 0,
   ss_total_pages    INTEGER            DEFAULT -1,
   ss_users          INTEGER            DEFAULT -1,
+  ss_active_users   INTEGER            DEFAULT -1,
   ss_admins         INTEGER            DEFAULT -1,
   ss_images         INTEGER            DEFAULT 0
 );
@@ -275,8 +290,10 @@ CREATE TABLE ipblocks (
   ipb_id                INTEGER      NOT NULL  PRIMARY KEY,
   --DEFAULT nextval('ipblocks_ipb_id_val'),
   ipb_address           VARCHAR(1024),
-  ipb_user              INTEGER            REFERENCES user(user_id) ON DELETE SET NULL,
-  ipb_by                INTEGER      NOT NULL  REFERENCES user(user_id) ON DELETE CASCADE,
+  ipb_user              INTEGER NOT NULL DEFAULT 0,
+  --           REFERENCES user(user_id) ON DELETE SET NULL,
+  ipb_by                INTEGER      NOT NULL DEFAULT 0,
+  --  REFERENCES user(user_id) ON DELETE CASCADE,
   ipb_by_text           VARCHAR(255)         NOT NULL  DEFAULT '',
   ipb_reason            VARCHAR(1024)         NOT NULL,
   ipb_timestamp         TIMESTAMP(3)  NOT NULL,
@@ -288,7 +305,8 @@ CREATE TABLE ipblocks (
   ipb_range_start       VARCHAR(1024),
   ipb_range_end         VARCHAR(1024),
   ipb_deleted           SMALLINT     NOT NULL  DEFAULT 0,
-  ipb_block_email       SMALLINT     NOT NULL  DEFAULT 0
+  ipb_block_email       SMALLINT     NOT NULL  DEFAULT 0,
+  ipb_allow_usertalk    SMALLINT     NOT NULL  DEFAULT 0
 
 );
 CREATE INDEX ipb_address ON ipblocks (ipb_address);
@@ -308,7 +326,8 @@ CREATE TABLE image (
   img_major_mime   VARCHAR(255)                DEFAULT 'unknown',
   img_minor_mime   VARCHAR(32)                DEFAULT 'unknown',
   img_description  VARCHAR(1024)      NOT NULL DEFAULT '',
-  img_user         INTEGER         REFERENCES user(user_id) ON DELETE SET NULL,
+  img_user         INTEGER NOT NULL DEFAULT 0,
+  --         REFERENCES user(user_id) ON DELETE SET NULL,
   img_user_text    VARCHAR(255)      NOT NULL DEFAULT '',
   img_timestamp    TIMESTAMP(3),
   img_sha1         VARCHAR(255)      NOT NULL  DEFAULT ''
@@ -318,14 +337,15 @@ CREATE INDEX img_timestamp_idx ON image (img_timestamp);
 CREATE INDEX img_sha1          ON image (img_sha1);
 
 CREATE TABLE oldimage (
-  oi_name          VARCHAR(255)         NOT NULL,
+  oi_name          VARCHAR(255)         NOT NULL DEFAULT '',
   oi_archive_name  VARCHAR(255)         NOT NULL,
   oi_size          INTEGER      NOT NULL,
   oi_width         INTEGER      NOT NULL,
   oi_height        INTEGER      NOT NULL,
   oi_bits          SMALLINT     NOT NULL,
   oi_description   VARCHAR(1024),
-  oi_user          INTEGER            REFERENCES user(user_id) ON DELETE SET NULL,
+  oi_user          INTEGER NOT NULL DEFAULT 0,
+  --            REFERENCES user(user_id) ON DELETE SET NULL,
   oi_user_text     VARCHAR(255)         NOT NULL,
   oi_timestamp     TIMESTAMP(3)  NOT NULL,
   oi_metadata      CLOB(16M) INLINE LENGTH 4096        NOT NULL DEFAULT '',
@@ -333,8 +353,8 @@ CREATE TABLE oldimage (
   oi_major_mime    VARCHAR(255)         NOT NULL DEFAULT 'unknown',
   oi_minor_mime    VARCHAR(255)         NOT NULL DEFAULT 'unknown',
   oi_deleted       SMALLINT     NOT NULL DEFAULT 0,
-  oi_sha1          VARCHAR(255)         NOT NULL DEFAULT '',
-  FOREIGN KEY (oi_name) REFERENCES image(img_name) ON DELETE CASCADE
+  oi_sha1          VARCHAR(255)         NOT NULL DEFAULT ''
+  --FOREIGN KEY (oi_name) REFERENCES image(img_name) ON DELETE CASCADE
 );
 --ALTER TABLE oldimage ADD CONSTRAINT oldimage_oi_name_fkey_cascade FOREIGN KEY (oi_name) REFERENCES image(img_name) ON DELETE CASCADE;
 CREATE INDEX oi_name_timestamp    ON oldimage (oi_name,oi_timestamp);
@@ -350,7 +370,8 @@ CREATE TABLE filearchive (
   fa_archive_name       VARCHAR(255),
   fa_storage_group      VARCHAR(255),
   fa_storage_key        VARCHAR(32),
-  fa_deleted_user       INTEGER            REFERENCES user(user_id) ON DELETE SET NULL,
+  fa_deleted_user       INTEGER NOT NULL DEFAULT 0,
+  --            REFERENCES user(user_id) ON DELETE SET NULL,
   fa_deleted_timestamp  TIMESTAMP(3)  NOT NULL,
   fa_deleted_reason     VARCHAR(255),
   fa_size               INTEGER      NOT NULL,
@@ -362,7 +383,8 @@ CREATE TABLE filearchive (
   fa_major_mime         VARCHAR(255)                   DEFAULT 'unknown',
   fa_minor_mime         VARCHAR(255)                   DEFAULT 'unknown',
   fa_description        VARCHAR(1024)         NOT NULL,
-  fa_user               INTEGER            REFERENCES user(user_id) ON DELETE SET NULL,
+  fa_user               INTEGER NOT NULL DEFAULT 0,
+  --            REFERENCES user(user_id) ON DELETE SET NULL,
   fa_user_text          VARCHAR(255)         NOT NULL,
   fa_timestamp          TIMESTAMP(3),
   fa_deleted            SMALLINT     NOT NULL DEFAULT 0
@@ -378,7 +400,8 @@ CREATE TABLE recentchanges (
   --PRIMARY KEY DEFAULT nextval('rc_rc_id_seq'),
   rc_timestamp       TIMESTAMP(3)  NOT NULL,
   rc_cur_time        TIMESTAMP(3)  NOT NULL,
-  rc_user            INTEGER        REFERENCES user(user_id) ON DELETE SET NULL,
+  rc_user            INTEGER NOT NULL DEFAULT 0,
+  --        REFERENCES user(user_id) ON DELETE SET NULL,
   rc_user_text       VARCHAR(255)         NOT NULL,
   rc_namespace       SMALLINT     NOT NULL,
   rc_title           VARCHAR(255)         NOT NULL,
@@ -386,7 +409,8 @@ CREATE TABLE recentchanges (
   rc_minor           SMALLINT     NOT NULL  DEFAULT 0,
   rc_bot             SMALLINT     NOT NULL  DEFAULT 0,
   rc_new             SMALLINT     NOT NULL  DEFAULT 0,
-  rc_cur_id          INTEGER            REFERENCES page(page_id) ON DELETE SET NULL,
+  rc_cur_id          INTEGER NOT NULL DEFAULT 0,
+  --            REFERENCES page(page_id) ON DELETE SET NULL,
   rc_this_oldid      INTEGER      NOT NULL,
   rc_last_oldid      INTEGER      NOT NULL,
   rc_type            SMALLINT     NOT NULL  DEFAULT 0,
@@ -412,7 +436,8 @@ CREATE INDEX rc_ip              ON recentchanges (rc_ip);
 
 
 CREATE TABLE watchlist (
-  wl_user                   INTEGER     NOT NULL  REFERENCES user(user_id) ON DELETE CASCADE,
+  wl_user                   INTEGER     NOT NULL DEFAULT 0,
+  --  REFERENCES user(user_id) ON DELETE CASCADE,
   wl_namespace              SMALLINT    NOT NULL  DEFAULT 0,
   wl_title                  VARCHAR(255)        NOT NULL,
   wl_notificationtimestamp  TIMESTAMP(3)
@@ -487,7 +512,8 @@ CREATE TABLE logging (
   log_type                     VARCHAR(32)         NOT NULL,
   log_action           VARCHAR(32)         NOT NULL,
   log_timestamp                TIMESTAMP(3)  NOT NULL,
-  log_user                     INTEGER                REFERENCES user(user_id) ON DELETE SET NULL,
+  log_user                     INTEGER NOT NULL DEFAULT 0,
+  --                REFERENCES user(user_id) ON DELETE SET NULL,
   -- Name of the user who performed this action
   log_user_text                VARCHAR(255) NOT NULL default '',
   log_namespace                SMALLINT     NOT NULL,
@@ -508,7 +534,8 @@ CREATE INDEX log_page_id_time ON logging (log_page,log_timestamp);
 CREATE TABLE trackbacks (
   tb_id     INTEGER  NOT NULL PRIMARY KEY,
   --PRIMARY KEY DEFAULT nextval('trackbacks_tb_id_seq'),
-  tb_page   INTEGER            REFERENCES page(page_id) ON DELETE CASCADE,
+  -- foreign key also in MySQL
+  tb_page   INTEGER REFERENCES page(page_id) ON DELETE CASCADE,
   tb_title  VARCHAR(255)     NOT NULL,
   tb_url    CLOB(64K) INLINE LENGTH 4096            NOT NULL,
   tb_ex     CLOB(64K) INLINE LENGTH 4096,
@@ -598,7 +625,8 @@ CREATE UNIQUE INDEX pf_name_server ON profiling (pf_name, pf_server);
 CREATE TABLE protected_titles (
   pt_namespace   SMALLINT    NOT NULL,
   pt_title       VARCHAR(255)        NOT NULL,
-  pt_user        INTEGER       REFERENCES user(user_id) ON DELETE SET NULL,
+  pt_user        INTEGER NOT NULL DEFAULT 0,
+  --       REFERENCES user(user_id) ON DELETE SET NULL,
   pt_reason      VARCHAR(1024),
   pt_timestamp   TIMESTAMP(3) NOT NULL,
   pt_expiry      TIMESTAMP(3)     ,