PL/SQL function error- not understandable - sql

Question

I have to do a pl/sql function. I have quite done it but on the server it shows an error but I have no idea what does the error means.
Could someone guide me into the right direction to complete the function?
This is the code:
SHOW ERRORS
CREATE OR REPLACE FUNCTION sum_of_task_types(project project.project_no%TYPE)
RETURN NUMBER IS
task NUMBER;
BEGIN
SELECT COUNT(DISTINCT t.task_type_no)
INTO task
FROM project p, stage s, task t ;
WHERE user_input_var = p.project_no;
AND p.project_no = s.project_no;
AND s.stage_id = t.stage_id;
AND p.project = project;
RETURN task;
END;
/
--use of the function
SELECT project_no, sum_of_task_types(project_no)project;
I do not know if the code looks clear here, so I have added a document showing the image of the code itself with the error shown below:
CREATE OR REPLACE FUNCTION sum_of_task_types(project project.project_no%TYPE)
RETURN NUMBER IS
task NUMBER;
BEGIN
SELECT COUNT(DISTINCT t.task_type_no)
INTO task
FROM project p, stage s, task t
WHERE user_input_var = p.project_no
AND p.project_no = s.project_no
AND s.stage_id = t.stage_id
AND p.project = project
RETURN task;
END;
/
I have done this now, still gives errors:
LINE/COL ERROR
6/5 PL/SQL: SQL Statement ignored
13/5 PL/SQL: ORA-00933: SQL command not properly ended

Answer 1

just add a ';' after 'AND p.project = project' to indicate termination of sql statement and this will become error free.

Answer 2

--There was a slight ';' syntactical mistake which was in the way of compiling FUNCTION correctly. I have posted below code hope it helps
CREATE OR REPLACE FUNCTION sum_of_task_types(
project project.project_no%TYPE)
RETURN NUMBER
IS
task NUMBER;
BEGIN
SELECT COUNT(DISTINCT t.task_type_no)
INTO task
FROM project p,
stage s,
task t
WHERE user_input_var = p.project_no
AND p.project_no = s.project_no
AND s.stage_id = t.stage_id
AND p.project = project;
RETURN task;
END;