Workaround adding a task to NO TEAM at id 1 to satisfy foreignt key even to the task is not assigned

mysql/sql/init.sql

@@ -25,7 +25,7 @@ CREATE TABLE guestbook (
 */
 
 CREATE TABLE teams (
-  teamid INT UNSIGNED AUTO_INCREMENT,
+  teamid INT AUTO_INCREMENT,
   team_name VARCHAR(200) NOT NULL,
   write_permission BOOLEAN,
   PRIMARY KEY (teamid)
@@ -79,7 +79,7 @@ CREATE TABLE projects_users (
 CREATE TABLE tasks (
   taskid INT UNSIGNED AUTO_INCREMENT,
   projectid INT UNSIGNED NOT NULL,
-  teamid INT UNSIGNED NULL,
+  teamid INT,
   title VARCHAR(200) NOT NULL,
   task_description VARCHAR(500),
   budget INT NOT NULL,
@@ -87,6 +87,7 @@ CREATE TABLE tasks (
   feedback VARCHAR(500) NULL,
   PRIMARY KEY (taskid),
   FOREIGN KEY (teamid) REFERENCES teams(teamid)
+  FOREIGN KEY (projectid) REFERENCES projects(projectid)
 );
 
 CREATE TABLE task_files (
@@ -114,7 +115,7 @@ CREATE TABLE delivery (
 );
 
 CREATE TABLE task_offer (
-  offerid INT UNSIGNED AUTO_INCREMENT,
+  offerid INT UNSIGNED AUTO_INCREMENT,1452 (23000): Cannot add or update a child row: a foreign key constraint fails (`db`.`tasks`, CONSTRAINT `tasks_ibfk_1` FOREIGN KEY (`teamid`) REFERENCES `teams` (`teamid`))
   taskid INT UNSIGNED NOT NULL,
   title VARCHAR(200) NOT NULL,
   price INT,
@@ -135,6 +136,8 @@ insert into guestbook values (NULL, "Hello World");
 
 insert into project_category values (NULL, "Test");
 
+insert into teams values (0, "NO TEAM", FALSE);
+
 /*
 Create default database user
 */

src/app/models/database.py

@@ -3,7 +3,7 @@ import mysql.connector
 db = mysql.connector.connect(
     user='root', 
     password='root',
-    #host='10.5.0.5',   # Docker address
-    host='0.0.0.0',    # Local address
+    host='10.5.0.5',   # Docker address
+    #host='0.0.0.0',    # Local address
     database='db'
 )

src/app/models/project.py

@@ -119,7 +119,7 @@ def set_task(projectid, task_title, task_description, budget):
         :type budget: str
     """
     cursor = db.cursor()
-    query = ("INSERT INTO tasks (projectid, title, task_description, budget, task_status) VALUES (\"" +
+    query = ("INSERT INTO tasks (teamid, projectid, title, task_description, budget, task_status) VALUES (1, \"" +
     projectid + "\", \"" + task_title + "\", \"" +
     task_description + "\", \"" + budget + "\", \"waiting for delivery\")")
     cursor.execute(query)