Improve DB work.

assets/scheme.sql

@@ -1,109 +1,144 @@
---
--- File generated with SQLiteStudio v3.2.1 on Sun Dec 6 13:46:57 2020
---
--- Text encoding used: System
---
 PRAGMA foreign_keys = off;
 BEGIN TRANSACTION;
 
 -- Table: alert
 CREATE TABLE IF NOT EXISTS alert (
-                       conf_id TEXT NOT NULL,
-                       user_id TEXT NOT NULL,
-                       created TEXT NOT NULL,
-                       time    TEXT NOT NULL,
-                       message TEXT
+    conf_id TEXT NOT NULL,
+    user_id TEXT NOT NULL,
+    created TEXT NOT NULL,
+    time    TEXT NOT NULL,
+    message TEXT
 );
 
 
 -- Table: conf
 CREATE TABLE IF NOT EXISTS conf (
-                      id    NUMERIC NOT NULL
-                          UNIQUE,
-                      title TEXT,
-                      date  INTEGER NOT NULL,
-                      PRIMARY KEY (
-                                   id
-                          )
+    id    NUMERIC NOT NULL
+                  UNIQUE,
+    title TEXT,
+    date  INTEGER NOT NULL,
+    PRIMARY KEY (
+        id
+    )
 );
 
 
 -- Table: file
 CREATE TABLE IF NOT EXISTS file (
-                      path    TEXT   NOT NULL,
-                      user_id TEXT   NOT NULL,
-                      conf_id TEXT   NOT NULL,
-                      file_id STRING PRIMARY KEY
+    path    TEXT   NOT NULL,
+    user_id TEXT   NOT NULL,
+    conf_id TEXT   NOT NULL,
+    file_id STRING PRIMARY KEY
+);
+
+
+-- Table: messages
+CREATE TABLE IF NOT EXISTS messages (
+    id   INTEGER NOT NULL
+                 PRIMARY KEY AUTOINCREMENT,
+    text TEXT    UNIQUE
 );
 
 
 -- Table: relations
 CREATE TABLE IF NOT EXISTS relations (
-                           id      INTEGER NOT NULL
-                               PRIMARY KEY AUTOINCREMENT,
-                           word_id INTEGER NOT NULL,
-                           user_id INTEGER NOT NULL,
-                           conf_id INTEGER NOT NULL,
-                           date    INTEGER NOT NULL,
-                           msg_id  INTEGER,
-                           FOREIGN KEY (
-                                        word_id
-                               )
-                               REFERENCES word (id) ON DELETE CASCADE,
-                           FOREIGN KEY (
-                                        user_id
-                               )
-                               REFERENCES user (id),
-                           FOREIGN KEY (
-                                        conf_id
-                               )
-                               REFERENCES conf (id)
+    id      INTEGER NOT NULL
+                    PRIMARY KEY AUTOINCREMENT,
+    word_id INTEGER NOT NULL,
+    user_id INTEGER NOT NULL,
+    conf_id INTEGER NOT NULL,
+    date    INTEGER NOT NULL,
+    msg_id  INTEGER,
+    FOREIGN KEY (
+        word_id
+    )
+    REFERENCES word (id) ON DELETE CASCADE,
+    FOREIGN KEY (
+        user_id
+    )
+    REFERENCES user (id),
+    FOREIGN KEY (
+        conf_id
+    )
+    REFERENCES conf (id)
 );
 
 
 -- Table: reset
 CREATE TABLE IF NOT EXISTS reset (
-                       id          INTEGER PRIMARY KEY AUTOINCREMENT,
-                       user_id     INTEGER,
-                       conf_id     INTEGER,
-                       date        INTEGER,
-                       relation_id INTEGER,
-                       FOREIGN KEY (
-                                    user_id
-                           )
-                           REFERENCES user (id)
+    id          INTEGER PRIMARY KEY AUTOINCREMENT,
+    user_id     INTEGER,
+    conf_id     INTEGER,
+    date        INTEGER,
+    relation_id INTEGER,
+    FOREIGN KEY (
+        user_id
+    )
+    REFERENCES user (id)
+);
+
+
+-- Table: stop_words
+CREATE TABLE IF NOT EXISTS stop_words (
+    word TEXT
 );
 
 
 -- Table: user
 CREATE TABLE IF NOT EXISTS user (
-                      id         INTEGER NOT NULL
-                          UNIQUE,
-                      username   TEXT,
-                      first_name INTEGER NOT NULL,
-                      last_name  INTEGER,
-                      date       INTEGER NOT NULL,
-                      PRIMARY KEY (
-                                   id
-                          )
-                          ON CONFLICT REPLACE
+    id         INTEGER NOT NULL
+                       UNIQUE,
+    username   TEXT,
+    first_name INTEGER NOT NULL,
+    last_name  INTEGER,
+    date       INTEGER NOT NULL,
+    PRIMARY KEY (
+        id
+    )
+    ON CONFLICT REPLACE
 );
 
 
 -- Table: word
 CREATE TABLE IF NOT EXISTS word (
-                      id   INTEGER PRIMARY KEY AUTOINCREMENT,
-                      word TEXT    UNIQUE
+    id   INTEGER PRIMARY KEY AUTOINCREMENT,
+    word TEXT    UNIQUE
 );
 
 
--- Table: xxx_message
-CREATE TABLE IF NOT EXISTS xxx_message (
-                             id   INTEGER NOT NULL
-                                 PRIMARY KEY AUTOINCREMENT,
-                             text TEXT    UNIQUE
+-- Index: conf_ids
+CREATE INDEX IF NOT EXISTS conf_ids ON conf (
+    id
+);
+
+
+-- Index: file_ids
+CREATE INDEX IF NOT EXISTS file_ids ON file (
+    file_id
+);
+
+
+-- Index: relations_ids
+CREATE INDEX IF NOT EXISTS relations_ids ON relations (
+    conf_id,
+    word_id,
+    user_id,
+    msg_id
+);
+
+
+-- Index: user_ids
+CREATE INDEX IF NOT EXISTS user_ids ON user (
+    id,
+    username
+);
+
+
+-- Index: word_id
+CREATE INDEX IF NOT EXISTS word_id ON word (
+    id
 );
 
 
 COMMIT TRANSACTION;
-PRAGMA foreign_keys = on;
+PRAGMA foreign_keys = on;