If a column with a boolean datatype doesn't have a default value. What
type of value is set if nothing is inserted into that column? Here is
my test table and the queries I have tried. I can't seem to be able to
select the rows where happy has no value.
Table "public.users"Column | Type | Modifiers
--------+-----------------------+-----------id | character varying(32) |email | text |happy |
boolean |money | numeric |
*select * from users; *id | email | happy | money
----+--------+-------+---------4 | me | | 1324.234 | me | | 1324.233 | as | | 123.21
| afjssd | t |
*select * from users where happy;*id | email | happy | money
----+--------+-------+-------1 | afjssd | t |
*select * from users where not happy;*id | email | happy | money
----+-------+-------+-------
(0 rows)
*select * from users where happy = NULL;*id | email | happy | money
----+-------+-------+-------
(0 rows)
*select * from users where happy = '';*
ERROR: invalid input syntax for type boolean: ""