3 added 163 characters in body
source | link

Added by Jack:

select 1, null;

?column? | ?column?
-------: | :-------
       1 | null    

Added by Jack:

select 1, null;

?column? | ?column?
-------: | :-------
       1 | null    
2 added 593 characters in body
source | link

Edit: dbfiddle markdown syntax

> user_id | check_date             | day       | time_in  | time_out | hours               | status 
> ------: | :--------------------- | :-------- | :------- | :------- | :------------------ | :------
>      53 | 2018-07-16 00:00:00+01 | Monday    | 08:15:17 | 09:38:03 | 25.3794444444444    | present
>      53 | 2018-07-17 00:00:00+01 | Tuesday   | <em>null</em>     | <em>null</em>     | <em>null</em>                | absent 
>      53 | 2018-07-18 00:00:00+01 | Wednesday | 06:34:13 | 08:05:17 | 1.51777777777778    | present

As you can see, the second row is not really aligned. Furthermore you can find the <em> tags and things like that.

Edit: dbfiddle markdown syntax

> user_id | check_date             | day       | time_in  | time_out | hours               | status 
> ------: | :--------------------- | :-------- | :------- | :------- | :------------------ | :------
>      53 | 2018-07-16 00:00:00+01 | Monday    | 08:15:17 | 09:38:03 | 25.3794444444444    | present
>      53 | 2018-07-17 00:00:00+01 | Tuesday   | <em>null</em>     | <em>null</em>     | <em>null</em>                | absent 
>      53 | 2018-07-18 00:00:00+01 | Wednesday | 06:34:13 | 08:05:17 | 1.51777777777778    | present

As you can see, the second row is not really aligned. Furthermore you can find the <em> tags and things like that.

1
source | link

I am missing the possibility to copy the table results for the SO editor. If I simply copy the table I end up with things like that:

user_id     check_date  day     time_in     time_out    hours   status
53  2018-07-16 00:00:00+01  Monday      08:15:17    09:38:03    25.3794444444444    present
53  2018-07-17 00:00:00+01  Tuesday                 absent
53  2018-07-18 00:00:00+01  Wednesday   06:34:13    08:05:17    1.51777777777778    present

The columns and values are not really aligned together. So I always have to append a manual formatting step (e.g. converting tabs into spaces):

user_id   check_date               day         time_in    time_out   hours              status
53        2018-07-16 00:00:00+01   Monday      08:15:17   09:38:03   25.3794444444444   present
53        2018-07-17 00:00:00+01   Tuesday                                              absent
53        2018-07-18 00:00:00+01   Wednesday   06:34:13   08:05:17   1.51777777777778   present

In SQLFiddle you can chose the output between (table, plaintext, markdown). Even plaintext looks much better and can be taken for copying into SO without any addional work:

| user_id |           check_date |       day |  time_in | time_out |                hours |  status |
|---------|----------------------|-----------|----------|----------|----------------------|---------|
|      53 | 2018-07-16T00:00:00Z | Monday    | 08:15:17 | 09:38:03 |   25.379444444444445 | present |
|      53 | 2018-07-17T00:00:00Z | Tuesday   |   (null) |   (null) |               (null) |  absent |
|      53 | 2018-07-18T00:00:00Z | Wednesday | 06:34:13 | 08:05:17 |   1.5177777777777777 | present |