Merge pull request #1 from acoustid/schema-change-2023-05

Schema change 2023 05

README.rst

@@ -82,6 +82,14 @@ When the MusicBrainz database schema changes, the replication will stop working.
 This is usually announced on the `MusicBrainz blog <http://blog.musicbrainz.org/>`__.
 When it happens, you need to upgrade the database.
 
+Release 2023-05-22 (28)
+~~~~~~~~~~~~~~~~~~~~~~~
+
+Run the upgrade scripts::
+
+    mbslave psql -f updates/schema-change/28.all.sql
+    echo 'UPDATE replication_control SET current_schema_sequence = 28;' | mbslave psql
+
 Release 2022-05-16 (27)
 ~~~~~~~~~~~~~~~~~~~~~~~
 

mbslave/sql/CreateFKConstraints.sql

@@ -500,6 +500,16 @@ ALTER TABLE edit_note
    FOREIGN KEY (edit)
    REFERENCES edit(id);
 
+ALTER TABLE edit_note_change
+   ADD CONSTRAINT edit_note_change_fk_edit_note
+   FOREIGN KEY (edit_note)
+   REFERENCES edit_note(id);
+
+ALTER TABLE edit_note_change
+   ADD CONSTRAINT edit_note_change_fk_change_editor
+   FOREIGN KEY (change_editor)
+   REFERENCES editor(id);
+
 ALTER TABLE edit_note_recipient
    ADD CONSTRAINT edit_note_recipient_fk_recipient
    FOREIGN KEY (recipient)
@@ -877,46 +887,6 @@ ALTER TABLE editor_subscribe_series_deleted
    FOREIGN KEY (deleted_by)
    REFERENCES edit(id);
 
-ALTER TABLE editor_watch_artist
-   ADD CONSTRAINT editor_watch_artist_fk_artist
-   FOREIGN KEY (artist)
-   REFERENCES artist(id)
-   ON DELETE CASCADE;
-
-ALTER TABLE editor_watch_artist
-   ADD CONSTRAINT editor_watch_artist_fk_editor
-   FOREIGN KEY (editor)
-   REFERENCES editor(id)
-   ON DELETE CASCADE;
-
-ALTER TABLE editor_watch_preferences
-   ADD CONSTRAINT editor_watch_preferences_fk_editor
-   FOREIGN KEY (editor)
-   REFERENCES editor(id)
-   ON DELETE CASCADE;
-
-ALTER TABLE editor_watch_release_group_type
-   ADD CONSTRAINT editor_watch_release_group_type_fk_editor
-   FOREIGN KEY (editor)
-   REFERENCES editor(id)
-   ON DELETE CASCADE;
-
-ALTER TABLE editor_watch_release_group_type
-   ADD CONSTRAINT editor_watch_release_group_type_fk_release_group_type
-   FOREIGN KEY (release_group_type)
-   REFERENCES release_group_primary_type(id);
-
-ALTER TABLE editor_watch_release_status
-   ADD CONSTRAINT editor_watch_release_status_fk_editor
-   FOREIGN KEY (editor)
-   REFERENCES editor(id)
-   ON DELETE CASCADE;
-
-ALTER TABLE editor_watch_release_status
-   ADD CONSTRAINT editor_watch_release_status_fk_release_status
-   FOREIGN KEY (release_status)
-   REFERENCES release_status(id);
-
 ALTER TABLE event
    ADD CONSTRAINT event_fk_type
    FOREIGN KEY (type)

mbslave/sql/CreateFunctions.sql

@@ -101,13 +101,12 @@ DECLARE
     ref_count integer;
 BEGIN
     -- decrement ref_count for the old name,
-    -- or delete it if ref_count would drop to 0
+    -- or prepare it for deletion if ref_count would drop to 0
     EXECUTE 'SELECT ref_count FROM ' || tbl || ' WHERE id = ' || row_id || ' FOR UPDATE' INTO ref_count;
     IF ref_count <= val THEN
-        EXECUTE 'DELETE FROM ' || tbl || ' WHERE id = ' || row_id;
-    ELSE
-        EXECUTE 'UPDATE ' || tbl || ' SET ref_count = ref_count - ' || val || ' WHERE id = ' || row_id;
+        EXECUTE 'INSERT INTO unreferenced_row_log (table_name, row_id) VALUES ($1, $2)' USING tbl, row_id;
     END IF;
+    EXECUTE 'UPDATE ' || tbl || ' SET ref_count = ref_count - ' || val || ' WHERE id = ' || row_id;
     RETURN;
 END;
 $$ LANGUAGE 'plpgsql';
@@ -204,21 +203,6 @@ $$ LANGUAGE 'plpgsql';
 -- editor triggers
 -----------------------------------------------------------------------
 
-CREATE OR REPLACE FUNCTION a_ins_editor() RETURNS trigger AS $$
-BEGIN
-    -- add a new entry to the editor_watch_preference table
-    INSERT INTO editor_watch_preferences (editor) VALUES (NEW.id);
-
-    -- by default watch for new official albums
-    INSERT INTO editor_watch_release_group_type (editor, release_group_type)
-        VALUES (NEW.id, 2);
-    INSERT INTO editor_watch_release_status (editor, release_status)
-        VALUES (NEW.id, 1);
-
-    RETURN NULL;
-END;
-$$ LANGUAGE 'plpgsql';
-
 CREATE OR REPLACE FUNCTION check_editor_name() RETURNS trigger AS $$
 BEGIN
     IF (SELECT 1 FROM old_editor_name WHERE lower(name) = lower(NEW.name))
@@ -495,6 +479,19 @@ BEGIN
         PERFORM dec_ref_count('artist_credit', OLD.artist_credit, 1);
         PERFORM inc_ref_count('artist_credit', NEW.artist_credit, 1);
     END IF;
+    IF (
+        NEW.status IS DISTINCT FROM OLD.status AND
+        (NEW.status = 6 OR OLD.status = 6)
+    ) THEN
+        PERFORM set_release_first_release_date(NEW.id);
+
+        -- avoid executing it twice as this will be executed a few lines below if RG changes
+        IF NEW.release_group = OLD.release_group THEN
+            PERFORM set_release_group_first_release_date(NEW.release_group);
+        END IF;
+
+        PERFORM set_releases_recordings_first_release_dates(ARRAY[NEW.id]);
+    END IF;
     IF NEW.release_group != OLD.release_group THEN
         -- release group is changed, decrement release_count in the original RG, increment in the new one
         UPDATE release_group_meta SET release_count = release_count - 1 WHERE id = OLD.release_group;
@@ -1082,7 +1079,13 @@ BEGIN
             SELECT release, date_year, date_month, date_day FROM release_unknown_country
         ) all_dates
         WHERE ' || condition ||
-        ' ORDER BY release, year NULLS LAST, month NULLS LAST, day NULLS LAST';
+        ' AND NOT EXISTS (
+          SELECT TRUE
+            FROM release
+           WHERE release.id = all_dates.release
+             AND status = 6
+        )
+        ORDER BY release, year NULLS LAST, month NULLS LAST, day NULLS LAST';
 END;
 $$ LANGUAGE 'plpgsql' STRICT;
 

mbslave/sql/CreateIndexes.sql

@@ -170,6 +170,8 @@ CREATE INDEX edit_url_idx ON edit_url (url);
 CREATE INDEX edit_note_idx_edit ON edit_note (edit);
 CREATE INDEX edit_note_idx_editor ON edit_note (editor);
 
+CREATE INDEX edit_note_change_idx_edit_note ON edit_note_change (edit_note);
+
 CREATE INDEX edit_note_recipient_idx_recipient ON edit_note_recipient (recipient);
 
 CREATE UNIQUE INDEX event_idx_gid ON event (gid);
@@ -671,6 +673,8 @@ CREATE INDEX track_raw_idx_release ON track_raw (release);
 CREATE INDEX medium_idx_track_count ON medium (track_count);
 CREATE INDEX medium_index_idx ON medium_index USING gist (toc);
 
+CREATE INDEX unreferenced_row_log_idx_inserted ON unreferenced_row_log USING BRIN (inserted);
+
 CREATE UNIQUE INDEX url_idx_gid ON url (gid);
 CREATE UNIQUE INDEX url_idx_url ON url (url);
 

mbslave/sql/CreatePrimaryKeys.sql

@@ -54,6 +54,7 @@ ALTER TABLE edit_instrument ADD CONSTRAINT edit_instrument_pkey PRIMARY KEY (edi
 ALTER TABLE edit_label ADD CONSTRAINT edit_label_pkey PRIMARY KEY (edit, label);
 ALTER TABLE edit_mood ADD CONSTRAINT edit_mood_pkey PRIMARY KEY (edit, mood);
 ALTER TABLE edit_note ADD CONSTRAINT edit_note_pkey PRIMARY KEY (id);
+ALTER TABLE edit_note_change ADD CONSTRAINT edit_note_change_pkey PRIMARY KEY (id);
 ALTER TABLE edit_note_recipient ADD CONSTRAINT edit_note_recipient_pkey PRIMARY KEY (recipient, edit_note);
 ALTER TABLE edit_place ADD CONSTRAINT edit_place_pkey PRIMARY KEY (edit, place);
 ALTER TABLE edit_recording ADD CONSTRAINT edit_recording_pkey PRIMARY KEY (edit, recording);
@@ -90,10 +91,6 @@ ALTER TABLE editor_subscribe_label ADD CONSTRAINT editor_subscribe_label_pkey PR
 ALTER TABLE editor_subscribe_label_deleted ADD CONSTRAINT editor_subscribe_label_deleted_pkey PRIMARY KEY (editor, gid);
 ALTER TABLE editor_subscribe_series ADD CONSTRAINT editor_subscribe_series_pkey PRIMARY KEY (id);
 ALTER TABLE editor_subscribe_series_deleted ADD CONSTRAINT editor_subscribe_series_deleted_pkey PRIMARY KEY (editor, gid);
-ALTER TABLE editor_watch_artist ADD CONSTRAINT editor_watch_artist_pkey PRIMARY KEY (artist, editor);
-ALTER TABLE editor_watch_preferences ADD CONSTRAINT editor_watch_preferences_pkey PRIMARY KEY (editor);
-ALTER TABLE editor_watch_release_group_type ADD CONSTRAINT editor_watch_release_group_type_pkey PRIMARY KEY (editor, release_group_type);
-ALTER TABLE editor_watch_release_status ADD CONSTRAINT editor_watch_release_status_pkey PRIMARY KEY (editor, release_status);
 ALTER TABLE event ADD CONSTRAINT event_pkey PRIMARY KEY (id);
 ALTER TABLE event_alias ADD CONSTRAINT event_alias_pkey PRIMARY KEY (id);
 ALTER TABLE event_alias_type ADD CONSTRAINT event_alias_type_pkey PRIMARY KEY (id);
@@ -350,6 +347,7 @@ ALTER TABLE tag_relation ADD CONSTRAINT tag_relation_pkey PRIMARY KEY (tag1, tag
 ALTER TABLE track ADD CONSTRAINT track_pkey PRIMARY KEY (id);
 ALTER TABLE track_gid_redirect ADD CONSTRAINT track_gid_redirect_pkey PRIMARY KEY (gid);
 ALTER TABLE track_raw ADD CONSTRAINT track_raw_pkey PRIMARY KEY (id);
+ALTER TABLE unreferenced_row_log ADD CONSTRAINT unreferenced_row_log_pkey PRIMARY KEY (table_name, row_id);
 ALTER TABLE url ADD CONSTRAINT url_pkey PRIMARY KEY (id);
 ALTER TABLE url_gid_redirect ADD CONSTRAINT url_gid_redirect_pkey PRIMARY KEY (gid);
 ALTER TABLE vote ADD CONSTRAINT vote_pkey PRIMARY KEY (id);

mbslave/sql/CreateTables.sql

@@ -524,7 +524,6 @@ CREATE TABLE cdtoc ( -- replicate
     track_count         INTEGER NOT NULL,
     leadout_offset      INTEGER NOT NULL,
     track_offset        INTEGER[] NOT NULL,
-    degraded            BOOLEAN NOT NULL DEFAULT FALSE,
     created             TIMESTAMP WITH TIME ZONE DEFAULT NOW()
 );
 
@@ -576,6 +575,18 @@ CREATE TABLE edit_note
     post_time            TIMESTAMP WITH TIME ZONE DEFAULT NOW()
 );
 
+CREATE TABLE edit_note_change
+(
+    id                  SERIAL, -- PK
+    status              edit_note_status,
+    edit_note           INTEGER NOT NULL, -- references edit_note.id
+    change_editor       INTEGER NOT NULL, -- references editor.id
+    change_time         TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
+    old_note            TEXT NOT NULL,
+    new_note            TEXT NOT NULL,
+    reason              TEXT NOT NULL DEFAULT ''
+);
+
 CREATE TABLE edit_note_recipient (
     recipient           INTEGER NOT NULL, -- PK, references editor.id
     edit_note           INTEGER NOT NULL  -- PK, references edit_note.id
@@ -2881,32 +2892,6 @@ CREATE TABLE editor_oauth_token
     )
 );
 
-CREATE TABLE editor_watch_preferences
-(
-    editor INTEGER NOT NULL, -- PK, references editor.id CASCADE
-    notify_via_email BOOLEAN NOT NULL DEFAULT TRUE,
-    notification_timeframe INTERVAL NOT NULL DEFAULT '1 week',
-    last_checked TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
-);
-
-CREATE TABLE editor_watch_artist
-(
-    artist INTEGER NOT NULL, -- PK, references artist.id CASCADE
-    editor INTEGER NOT NULL  -- PK, references editor.id CASCADE
-);
-
-CREATE TABLE editor_watch_release_group_type
-(
-    editor INTEGER NOT NULL, -- PK, references editor.id CASCADE
-    release_group_type INTEGER NOT NULL -- PK, references release_group_primary_type.id
-);
-
-CREATE TABLE editor_watch_release_status
-(
-    editor INTEGER NOT NULL, -- PK, references editor.id CASCADE
-    release_status INTEGER NOT NULL -- PK, references release_status.id
-);
-
 CREATE TABLE medium ( -- replicate (verbose)
     id                  SERIAL,
     release             INTEGER NOT NULL, -- references release.id
@@ -3890,6 +3875,12 @@ CREATE TABLE medium_index ( -- replicate
     toc                 CUBE
 );
 
+CREATE TABLE unreferenced_row_log (
+    table_name          VARCHAR NOT NULL, -- PK
+    row_id              INTEGER NOT NULL, -- PK
+    inserted            TIMESTAMP WITH TIME ZONE DEFAULT NOW()
+);
+
 CREATE TABLE url ( -- replicate
     id                  SERIAL,
     gid                 UUID NOT NULL,

mbslave/sql/CreateTriggers.sql

@@ -64,9 +64,6 @@ CREATE TRIGGER b_upd_artist_tag BEFORE UPDATE ON artist_tag
 CREATE TRIGGER b_upd_editor BEFORE UPDATE ON editor
     FOR EACH ROW EXECUTE PROCEDURE b_upd_last_updated_table();
 
-CREATE TRIGGER a_ins_editor AFTER INSERT ON editor
-    FOR EACH ROW EXECUTE PROCEDURE a_ins_editor();
-
 CREATE TRIGGER check_editor_name BEFORE UPDATE OR INSERT ON editor
     FOR EACH ROW EXECUTE PROCEDURE check_editor_name();
 

mbslave/sql/CreateTypes.sql

@@ -3,6 +3,8 @@ BEGIN;
 
 CREATE TYPE cover_art_presence AS ENUM ('absent', 'present', 'darkened');
 
+CREATE TYPE edit_note_status AS ENUM ('deleted', 'edited');
+
 CREATE TYPE event_art_presence AS ENUM ('absent', 'present', 'darkened');
 
 CREATE TYPE fluency AS ENUM (

mbslave/sql/DropFKConstraints.sql

@@ -98,6 +98,8 @@ ALTER TABLE edit_mood DROP CONSTRAINT IF EXISTS edit_mood_fk_edit;
 ALTER TABLE edit_mood DROP CONSTRAINT IF EXISTS edit_mood_fk_mood;
 ALTER TABLE edit_note DROP CONSTRAINT IF EXISTS edit_note_fk_editor;
 ALTER TABLE edit_note DROP CONSTRAINT IF EXISTS edit_note_fk_edit;
+ALTER TABLE edit_note_change DROP CONSTRAINT IF EXISTS edit_note_change_fk_edit_note;
+ALTER TABLE edit_note_change DROP CONSTRAINT IF EXISTS edit_note_change_fk_change_editor;
 ALTER TABLE edit_note_recipient DROP CONSTRAINT IF EXISTS edit_note_recipient_fk_recipient;
 ALTER TABLE edit_note_recipient DROP CONSTRAINT IF EXISTS edit_note_recipient_fk_edit_note;
 ALTER TABLE edit_place DROP CONSTRAINT IF EXISTS edit_place_fk_edit;
@@ -172,13 +174,6 @@ ALTER TABLE editor_subscribe_series DROP CONSTRAINT IF EXISTS editor_subscribe_s
 ALTER TABLE editor_subscribe_series_deleted DROP CONSTRAINT IF EXISTS editor_subscribe_series_deleted_fk_editor;
 ALTER TABLE editor_subscribe_series_deleted DROP CONSTRAINT IF EXISTS editor_subscribe_series_deleted_fk_gid;
 ALTER TABLE editor_subscribe_series_deleted DROP CONSTRAINT IF EXISTS editor_subscribe_series_deleted_fk_deleted_by;
-ALTER TABLE editor_watch_artist DROP CONSTRAINT IF EXISTS editor_watch_artist_fk_artist;
-ALTER TABLE editor_watch_artist DROP CONSTRAINT IF EXISTS editor_watch_artist_fk_editor;
-ALTER TABLE editor_watch_preferences DROP CONSTRAINT IF EXISTS editor_watch_preferences_fk_editor;
-ALTER TABLE editor_watch_release_group_type DROP CONSTRAINT IF EXISTS editor_watch_release_group_type_fk_editor;
-ALTER TABLE editor_watch_release_group_type DROP CONSTRAINT IF EXISTS editor_watch_release_group_type_fk_release_group_type;
-ALTER TABLE editor_watch_release_status DROP CONSTRAINT IF EXISTS editor_watch_release_status_fk_editor;
-ALTER TABLE editor_watch_release_status DROP CONSTRAINT IF EXISTS editor_watch_release_status_fk_release_status;
 ALTER TABLE event DROP CONSTRAINT IF EXISTS event_fk_type;
 ALTER TABLE event_alias DROP CONSTRAINT IF EXISTS event_alias_fk_event;
 ALTER TABLE event_alias DROP CONSTRAINT IF EXISTS event_alias_fk_type;

mbslave/sql/DropFunctions.sql

@@ -17,7 +17,6 @@ DROP FUNCTION a_ins_alternative_medium_track();
 DROP FUNCTION a_ins_alternative_release_or_track();
 DROP FUNCTION a_ins_artist();
 DROP FUNCTION a_ins_edit_note();
-DROP FUNCTION a_ins_editor();
 DROP FUNCTION a_ins_event();
 DROP FUNCTION a_ins_instrument();
 DROP FUNCTION a_ins_l_area_area_mirror();

mbslave/sql/DropIndexes.sql

@@ -84,6 +84,7 @@ DROP INDEX edit_instrument_idx;
 DROP INDEX edit_label_idx;
 DROP INDEX edit_label_idx_status;
 DROP INDEX edit_mood_idx;
+DROP INDEX edit_note_change_idx_edit_note;
 DROP INDEX edit_note_idx_edit;
 DROP INDEX edit_note_idx_editor;
 DROP INDEX edit_note_recipient_idx_recipient;
@@ -506,6 +507,7 @@ DROP INDEX track_idx_artist_credit;
 DROP INDEX track_idx_gid;
 DROP INDEX track_idx_recording;
 DROP INDEX track_raw_idx_release;
+DROP INDEX unreferenced_row_log_idx_inserted;
 DROP INDEX url_gid_redirect_idx_new_id;
 DROP INDEX url_idx_gid;
 DROP INDEX url_idx_url;

mbslave/sql/DropPrimaryKeys.sql

@@ -54,6 +54,7 @@ ALTER TABLE edit_instrument DROP CONSTRAINT IF EXISTS edit_instrument_pkey;
 ALTER TABLE edit_label DROP CONSTRAINT IF EXISTS edit_label_pkey;
 ALTER TABLE edit_mood DROP CONSTRAINT IF EXISTS edit_mood_pkey;
 ALTER TABLE edit_note DROP CONSTRAINT IF EXISTS edit_note_pkey;
+ALTER TABLE edit_note_change DROP CONSTRAINT IF EXISTS edit_note_change_pkey;
 ALTER TABLE edit_note_recipient DROP CONSTRAINT IF EXISTS edit_note_recipient_pkey;
 ALTER TABLE edit_place DROP CONSTRAINT IF EXISTS edit_place_pkey;
 ALTER TABLE edit_recording DROP CONSTRAINT IF EXISTS edit_recording_pkey;
@@ -90,10 +91,6 @@ ALTER TABLE editor_subscribe_label DROP CONSTRAINT IF EXISTS editor_subscribe_la
 ALTER TABLE editor_subscribe_label_deleted DROP CONSTRAINT IF EXISTS editor_subscribe_label_deleted_pkey;
 ALTER TABLE editor_subscribe_series DROP CONSTRAINT IF EXISTS editor_subscribe_series_pkey;
 ALTER TABLE editor_subscribe_series_deleted DROP CONSTRAINT IF EXISTS editor_subscribe_series_deleted_pkey;
-ALTER TABLE editor_watch_artist DROP CONSTRAINT IF EXISTS editor_watch_artist_pkey;
-ALTER TABLE editor_watch_preferences DROP CONSTRAINT IF EXISTS editor_watch_preferences_pkey;
-ALTER TABLE editor_watch_release_group_type DROP CONSTRAINT IF EXISTS editor_watch_release_group_type_pkey;
-ALTER TABLE editor_watch_release_status DROP CONSTRAINT IF EXISTS editor_watch_release_status_pkey;
 ALTER TABLE event DROP CONSTRAINT IF EXISTS event_pkey;
 ALTER TABLE event_alias DROP CONSTRAINT IF EXISTS event_alias_pkey;
 ALTER TABLE event_alias_type DROP CONSTRAINT IF EXISTS event_alias_type_pkey;
@@ -350,6 +347,7 @@ ALTER TABLE tag_relation DROP CONSTRAINT IF EXISTS tag_relation_pkey;
 ALTER TABLE track DROP CONSTRAINT IF EXISTS track_pkey;
 ALTER TABLE track_gid_redirect DROP CONSTRAINT IF EXISTS track_gid_redirect_pkey;
 ALTER TABLE track_raw DROP CONSTRAINT IF EXISTS track_raw_pkey;
+ALTER TABLE unreferenced_row_log DROP CONSTRAINT IF EXISTS unreferenced_row_log_pkey;
 ALTER TABLE url DROP CONSTRAINT IF EXISTS url_pkey;
 ALTER TABLE url_gid_redirect DROP CONSTRAINT IF EXISTS url_gid_redirect_pkey;
 ALTER TABLE vote DROP CONSTRAINT IF EXISTS vote_pkey;

mbslave/sql/DropTables.sql

@@ -58,6 +58,7 @@ DROP TABLE edit_instrument;
 DROP TABLE edit_label;
 DROP TABLE edit_mood;
 DROP TABLE edit_note;
+DROP TABLE edit_note_change;
 DROP TABLE edit_note_recipient;
 DROP TABLE edit_place;
 DROP TABLE edit_recording;
@@ -94,10 +95,6 @@ DROP TABLE editor_subscribe_label;
 DROP TABLE editor_subscribe_label_deleted;
 DROP TABLE editor_subscribe_series;
 DROP TABLE editor_subscribe_series_deleted;
-DROP TABLE editor_watch_artist;
-DROP TABLE editor_watch_preferences;
-DROP TABLE editor_watch_release_group_type;
-DROP TABLE editor_watch_release_status;
 DROP TABLE event;
 DROP TABLE event_alias;
 DROP TABLE event_alias_type;
@@ -355,6 +352,7 @@ DROP TABLE tag_relation;
 DROP TABLE track;
 DROP TABLE track_gid_redirect;
 DROP TABLE track_raw;
+DROP TABLE unreferenced_row_log;
 DROP TABLE url;
 DROP TABLE url_gid_redirect;
 DROP TABLE vote;

mbslave/sql/DropTriggers.sql

@@ -22,7 +22,6 @@ DROP TRIGGER IF EXISTS restore_collection_sub_on_public ON editor_collection;
 DROP TRIGGER IF EXISTS search_hint ON artist_alias;
 DROP TRIGGER IF EXISTS b_upd_artist_tag ON artist_tag;
 DROP TRIGGER IF EXISTS b_upd_editor ON editor;
-DROP TRIGGER IF EXISTS a_ins_editor ON editor;
 DROP TRIGGER IF EXISTS check_editor_name ON editor;
 DROP TRIGGER IF EXISTS a_ins_event ON event;
 DROP TRIGGER IF EXISTS b_upd_event ON event;