get row values to one column recursively (and doing combinations) - sqlite

Question

I have one input table, it has dates and a fixed number of events. I need to create, from it, the list of events with date of occurrence, and the list of combined events and their occurrence.
Example:
initial table:
CREATE TABLE events (
date DATE PRIMARY KEY,
e1 INTEGER,
e2 INTEGER,
e3 INTEGER
);
date | e1 | e2 | e3 |
--------------------------
2017-02-04 | 2 | 1 | 26 |
2017-02-05 | 14 | 2 | 1 |
2017-02-06 | 1 | 3 | 2 |
Output 1
eventN | total | date1 | date2 |...| date'N'
--------------------------------------------------------
01 | 3 | 2017-02-04 | 2017-02-05 |...| 2017-02-06
02 | 2 | 2017-02-05 | 2017-02-06 |...| (null)
...
26 | 1 | 2017-02-04 | (null) |...| (null)
Output 2
CobineEventN | total | date1 | ... | date'N'
-----------------------------------------------------
0102 | 2 | 2017-02-05 | ... | 2017-02-06
0103 | 1 | 2017-02-06 | ... | (null)
....
2526 | 1 | 2017-02-04 | ... | (null)
....
Limitations:
this has to be done in SQLite.
there is no limit for the dates (i.e. 'n' unique dates).
the events, are a fixed list of (around)50 ids
the output will be tables, one for each type of combination.
the author SQL skills.

Answer 1

After some talk with a teacher, he pointed out that my model was all wrong from start.
changing the table to:
REATE TABLE event (id integer NOT NULL PRIMARY KEY AUTOINCREMENT, date date NOT NULL, event smallint unsigned NOT NULL);
*'id' is unnecessary
something like:
Id date event
31 2016-10-05 1
44 2016-10-07 1
32 2016-10-05 2
I could use a query like:
select A.event as nA, B.event as nB, C.event as nC, date
from event as A, event as B, event as C
where A.date = B.date
and B.date=C.date
and nC<>nA
and nC<>nB
and obtain the values needed.
nA nB nC date
1 2 3 2016-10-05
1 2 3 2016-10-07
1 2 4 2016-10-07
...
Although the format is not exactly what I had imagined, the results work fine.
And I don't need to create any more columns for the rest of the project, just have to do the right queries.
BR