query T
SELECT '';
----
(empty)

query ?
SELECT TRUE;
----
true

query R
SELECT 1.5;
----
1.5

query ?
SELECT from_hex('');
----
0x

query ?
SELECT from_hex('000f10ff');
----
0x000f10ff

query I
SELECT TIMETZ '12:00:00+00' AS t
----
12:00:00+00

query I
SELECT TIMETZ '12:00:00+02' AS t
----
12:00:00+02
