Fixed issues with db

Database/create-database.sql

@@ -1,8 +1,13 @@
 CREATE TABLE IF NOT EXISTS log_levels (
-    log_level_id INTEGER PRIMARY KEY AUTOINCREMENT,
+    log_level_id INTEGER PRIMARY KEY,
     log_level_name VARCHAR(10) NOT NULL
 );
 
+INSERT INTO log_levels (log_level_id, log_level_name) VALUES
+    (0, 'INFO'),
+    (1, 'CRITICAL'),
+    (2, 'WARNING');
+
 CREATE TABLE IF NOT EXISTS logs (
     log_id INTEGER PRIMARY KEY AUTOINCREMENT,
     log_level_id INTEGER NOT NULL DEFAULT 0,
@@ -10,18 +15,17 @@ CREATE TABLE IF NOT EXISTS logs (
     log_message TEXT NOT NULl,
     log_entry_timestamp DATETIME DEFAULT CURRENT_TIMESTAMP,
 
-    FOREIGN KEY (log_level_id) REFERENCES log
+    FOREIGN KEY (log_level_id) REFERENCES log_levels(log_level_id)
 );
 
 
-CREATE VIEW log_statistics AS
+CREATE VIEW IF NOT EXISTS log_statistics AS
     SELECT levels.log_level_name, COUNT(logs.log_id) FROM logs
     JOIN log_levels levels ON log_levels.log_level_id = logs.log_level_id
-    GROUP BY log_level_id;
-
-CREATE VIEW log_statistics_last_7_days AS
-    SELECT log_levels.log_level_name, COUNT(logs.log_id) FROM logs
-    JOIN log_levels ON log_levels.log_level_id = (logs.log_level_id + 1)
-    WHERE logs.log_entry_timestamp > DATETIME(CURRENT_TIMESTAMP, '-7 day')
     GROUP BY logs.log_level_id;
 
+CREATE VIEW IF NOT EXISTS log_statistics_last_7_days AS
+    SELECT log_levels.log_level_name, COUNT(logs.log_id) FROM logs
+    JOIN log_levels ON log_levels.log_level_id = logs.log_level_id 
+    WHERE logs.log_entry_timestamp > DATETIME(CURRENT_TIMESTAMP, '-7 day')
+    GROUP BY logs.log_level_id;