joining columns of same table with different criteria - SQL - sql

Question

I am able to query with one condition ( as shown in image below ) but when i query with couple of criterias and trying to create two same columns of same table with different criteria, i get no result. 2nd Image is the expected result which i am not able to retrieve. Any inputs are highly appreciated. Thanks.
select save_line from save_output_table
where execution_id in ('292')
and seq_id = '0'
and save_type='R'
order by line_id ASC
+------------+
| Save_line |
+------------+
| 17 |
| 22 |
| 23 |
+------------+
SELECT
( select save_line
from save_output_table
where execution_id in ('292')
and seq_id = '0'
and save_type='R'
order by line_id ASC
) as save_line1,
( select save_line
from save_output_table
where execution_id in ('286')
and seq_id = '0'
and save_type='R'
order by line_id ASC
) as save_line2
from save_output_table
+-------------+------------+
| Save_line 1 | Save_line2 |
+-------------+------------+
| 17 | 9 |
| 22 | 5 |
| 23 | 3 |
+-------------+------------+
Sample Data :
+---------------+--------+-----------+---------+-----------+
| execution_id | seq_id | save_type | line_id | save_line |
+---------------+--------+-----------+---------+-----------+
| 286 | 0 | R | 1 | 17 |
| 286 | 0 | R | 2 | 22 |
| 286 | 0 | R | 3 | 23 |
| 286 | 0 | D | 1 | 17 |
| 286 | 0 | D | 2 | 22 |
| 286 | 0 | D | 3 | 23 |
| 292 | 0 | R | 1 | 9 |
| 292 | 0 | R | 2 | 5 |
| 292 | 0 | R | 3 | 3 |
| 292 | 0 | D | 1 | 98 |
| 292 | 0 | D | 2 | 622 |
| 292 | 0 | D | 3 | 273 |
+---------------+--------+-----------+---------+-----------+

Answer 1

So if you want lists of save_line in order by line_id, in different columns according to save_type and execution_id, you need to pivot. There are a few different ways you can do this. Here are a couple that should work no matter what flavor of SQL you are using:
SELECT line_id,
max(CASE WHEN execution_id = '292' and save_type = 'R' then save_line end) R_292,
max(CASE WHEN execution_id = '286' and save_type = 'R' then save_line end) R_286
FROM save_output_table
GROUP BY line_id
or
SELECT t1.save_line save_line1,
t2.save_line save_line2
FROM
(SELECT *
FROM save_output_table
WHERE save_type = 'R'
and execution_id = '292'
) t1
JOIN (SELECT *
FROM save_output_table
WHERE save_type = 'R'
and execution_id = '286'
) t2
ON t1.line_id = t2.line_id
Note: for the second option, the join only gives complete lists if there are the same number of line_ids for each condition. If there aren't, you should change it to a FULL OUTER JOIN, which wouldn't work in MySQL and possibly others.