strange insert

To reproduce

CREATE TABLE 'test' (
  id VARCHAR,
  name VARCHAR,
  type VARCHAR,
  num int,
  disabled BOOLEAN,
  created_at TIMESTAMP,
  updated_at TIMESTAMP
) timestamp (created_at) PARTITION BY HOUR WAL;

ALTER TABLE test add COLUMN age int;

INSERT INTO test  ( id, name, type, num, created_at )  VALUES (  'xxx', 'string', 'string', 10, now()  );

select * from test;

1. why is num 0?
2. why is updated_at 1970?

QuestDB version:

8.1.0

OS, in case of Docker specify Docker and the Host OS:

windows docker desktop

File System, in case of Docker specify Host File System:

ntfs

Full Name:

xdewx

Affiliation:

xdewx

Have you followed Linux, MacOs kernel configuration steps to increase Maximum open files and Maximum virtual memory areas limit?

• Yes, I have

Additional context

No response

Start by running the reported CREATE TABLE, ALTER TABLE, INSERT, and SELECT sequence against QuestDB 8.1.0 and compare the num and updated_at values with the report. Trace the insert and schema-alteration behavior responsible for those values; done means explaining the behavior and providing a verified correction or documented expected result.