[Bug]: select constant decimal lose precision

[zengyan1]

Is there an existing issue for the same bug?

• [X] I have checked the existing issues.

Branch Name

main

Commit ID

4ce6b31

Other Environment Information

- Hardware parameters:
- OS type:
- Others:

Actual Behavior

Expected Behavior

No response

Steps to Reproduce

select 111111111111111111111111111111111111111.11111111111111;

Additional information

No response

[aunjgr]

The integral part of mentioned constant has 39 digits, which exceeds Decimal128's upper limit 38 digits. So it is parsed as a double.

It complies with our type system, and is not a bug.