SQL query with dynamic columns (PIVOT) - mysql

Question

I am trying to write a SQL query that will turn this table:
Start_time End_time Instructor Student
9:00 9:35 Joe Bob Andrew
9:00 9:35 Joe Bob Smith
9:00 9:35 Roberto Andy
10:00 10:35 Joe Bob Angelica
11:00 11:20 Roberto Bob
Into something like this:
Instructor 9:00 10:00 11:00
Joe Bob Andrew, Smith Angelica NULL
Roberto Andy NULL Bob
I think that this is some sort of PIVOT command but I am not sure how I should go about writing the SQL query. The times are all dynamically generated so I would prefer it if the query would generate the column names in the second table dynamically (for example, if the original table contained an additional start time of 11:30, there should be a new column for 11:30 in the result).
Thank you in advance, I've been playing with this for a while but couldn't get it to work on my own. I can provide the SQL INSERT commands to give you the full data if necessary.
EDIT: It would be particularly helpful to get the result of this select statement as a VIEW. Thanks!
EDIT 2:
The code that is generating the view that makes the first table is:
CREATE VIEW schedule_view AS SELECT RTRIM(SUBSTRING(students.schedule_first_choice, 1, 5)) AS start_time, RTRIM(SUBSTRING(students.schedule_first_choice, -10, 5) AS end_time, CONCAT(instructors.first_name, ' ', instructors.last_name) AS instructor_name,
CONCAT(students.first_name, ' ', students.last_name) AS student_name , students.swim_america_level as class
FROM students, instructors WHERE students.instructor_id = instructors.instructor_id AND students.season =
(SELECT constant_value FROM constants WHERE constant_name = 'season') AND students.year =
(SELECT constant_value FROM constants WHERE constant_name = 'year')

Answer 1

SET #sql = NULL;
SELECT
GROUP_CONCAT(DISTINCT
CONCAT(
'GROUP_CONCAT(case when Start_time = ''',
Start_time,
''' then Student ELSE NULL end) AS ',
CONCAT('`',Start_time,'`')
)
) INTO #sql
FROM Table1;
SET #sql = CONCAT('SELECT Instructor, ', #sql, '
FROM Table1
GROUP BY Instructor');
PREPARE stmt FROM #sql;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;
SQLFiddle Demo

Answer 2

IN THESE ALL QUERY EXECUTED AND TESTED IN SQL SEREVR
USING STATIC COLUMNS IN PIVOT
Select * from
(
select Instructor,Start_time, STUFF((select ',' + student from Table1 a where
a.Start_time = b.Start_time and
a.Instructor=b.Instructor for xml path('')),1,1,'') as student
from table1 b ) x
PIVOT
(
max(Student)
for start_time IN ([9:00],[10:00], [11:00])
) p
DYNAMICALLY CREATE PIVOT TABLE Using Temp Table
Declare #tab nvarchar(max)
Declare #pivottab nvarchar(max)
Create table #Table2 (
instructor varchar(100),
student varchar(100),
start_time varchar(10)
);
insert into #Table2 (instructor,student,start_time)
select
Instructor,
STUFF((Select ','+student
from Table1 as a
Where
a.Start_time = b.Start_time and
a.Instructor=b.Instructor
for xml path('')),1,1,''),
Start_time
from table1 as b
select #tab = coalesce(#tab + ',['+start_time+']' ,'['+start_time+']')
from #Table2
group by Start_time
set #pivottab =
N' select * from (
select Instructor, Start_time, student from #Table2
) x
PIVOT (
max(Student) for start_time IN ('+#tab+')
) p'
execute(#pivottab)
if exists(select * from #table2)
Begin
Drop table #table2
End
DYNAMICALLY CREATE PIVOT TABLE
Declare #tab nvarchar(max)
Declare #pivottab nvarchar(max)
Select #tab = coalesce(#tab + ',['+start_time+']' , '['+start_time+']') from Table1
group by Start_time
set #pivottab = N'
select *
from
(
select Instructor,Start_time,STUFF((select '+ char(39)+char(44)+char(39) + '+ a.student from Table1 as a
where a.Start_time = b.Start_time and a.Instructor=b.Instructor for xml path('''')),1,1,'''')
as Student from table1 as b
) x
PIVOT
(
max(Student)
for start_time IN ('+#tab+')
) p'
execute(#pivottab)