SQL: aggregate functions with single argument not processing modifiers

[gramian]

ArcadeDB Server v23.3.1 (build da609e411ccf28afeab01015ad6c2ecca1dadb3d/1680693032550/main)

Running on Mac OS X 12.6.4 - OpenJDK 64-Bit Server VM Homebrew

The results of aggregate functions with a single argument (either literal or type) do not handle modifiers. It works as expected when using two arguments.

Expected behavior

LIST
1
INTEGER
INTEGER

Actual behavior

[1,2,3,4]
[1,2,3,4]
10
4

Steps to reproduce

CREATE DOCUMENT TYPE doc;
INSERT INTO doc (num) VALUES (1), (2), (3), (4);

SELECT unionall(num).type() FROM doc;
SELECT unionall(num)[0] FROM doc;
SELECT sum(num).type() FROM doc;
SELECT max(num).type() FROM doc;

[gramian]

I tried looking into a selection of aggregating SQL functions to look for a pattern, but I couldn't find any explaining this error definitely. Here are my findings:

• sum (execute) returns an Object holding a:
  • Single parameter: Number
  • Multiple parameters: Number
• max (execute) returns an Object holding a:
  • Single parameter: Object
  • Multiple parameters: Object
• unionAll (execute) returns an Object holding a:
  • Single parameter: ArrayList<Object>
  • Multiple parameters: MultiIterator<>

[lvca]

Reproduced.