diff --git a/backend/internal/database/migrations/0010_users.sql b/backend/internal/database/migrations/0010_users.sql
index a3ee5b1..93c4df8 100644
--- a/backend/internal/database/migrations/0010_users.sql
+++ b/backend/internal/database/migrations/0010_users.sql
@@ -10,4 +10,4 @@ CREATE TABLE IF NOT EXISTS users (
 
 -- Users are commonly searched by username and userId
 CREATE INDEX IF NOT EXISTS users_username_index ON users (username);
-CREATE INDEX IF NOT EXISTS users_userId_index ON users (userId);
\ No newline at end of file
+CREATE INDEX IF NOT EXISTS users_userId_index ON users (Id);
\ No newline at end of file
diff --git a/backend/internal/database/sample_data/0010_sample_data.sql b/backend/internal/database/sample_data/0010_sample_data.sql
index f3d9412..d3012c6 100644
--- a/backend/internal/database/sample_data/0010_sample_data.sql
+++ b/backend/internal/database/sample_data/0010_sample_data.sql
@@ -1,7 +1,48 @@
-INSERT OR IGNORE INTO users (username, password) VALUES
-    ('admin', 'password'),
-    ('user', 'password');
+INSERT OR IGNORE INTO users(username, password)
+VALUES ("admin", "123");
 
-INSERT OR IGNORE INTO projects (name, description, owner_user_id) VALUES
-    ('Project 1', 'Description 1', 1),
-    ('Project 2', 'Description 2', 2);
\ No newline at end of file
+INSERT OR IGNORE INTO users(username, password)
+VALUES ("user", "123");
+
+INSERT OR IGNORE INTO users(username, password)
+VALUES ("user2", "123");
+
+INSERT OR IGNORE INTO projects(name,description,owner_user_id)
+VALUES ("projecttest","test project", 1)
+
+INSERT OR IGNORE INTO projects(name,description,owner_user_id)
+VALUES ("projecttest2","test project2", 1)
+
+INSERT OR IGNORE INTO projects(name,description,owner_user_id)
+VALUES ("projecttest3","test project3", 1)
+
+INSERT OR IGNORE INTO user_roles(user_id,project_id,p_role)
+VALUES (1,1,"project_manager");
+
+INSERT INTO user_roles(user_id,project_id,p_role)
+VALUES (2,1,"member");
+
+INSERT INTO user_roles(user_id,project_id,p_role)
+VALUES (3,1,"member");
+
+INSERT INTO user_roles(user_id,project_id,p_role)
+VALUES (3,2,"member");
+
+INSERT INTO user_roles(user_id,project_id,p_role)
+VALUES (3,3,"member");
+
+INSERT INTO user_roles(user_id,project_id,p_role)
+VALUES (2,1,"project_manager");
+
+
+SELECT p.id, p.name, p.description
+FROM projects p
+JOIN user_roles ur ON p.id = ur.project_id
+JOIN users u ON ur.user_id = u.id
+WHERE u.username = 'admin';
+
+SELECT id FROM users WHERE username = "admin"
+
+SELECT id FROM users WHERE username = "user"
+
+SELECT id FROM users WHERE username = "user2"