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Lack of support for BIGNUMERIC when using duckdb backend. #1760

Description

@sundar-mudupalli-work

Describe the bug
The Duckdb backend does not support Google BigNumeric. Any data with more than 38 digits of precision will fail with the Duckdb backend.

What version of DVT are you using?
Probably DVT version 9 and later.

What type of connections are you using for source and target?
BigQuery for Source and Target.

Steps to reproduce the behavior
See test test_numeric_types in test_bigquery.py

Expected behavior
A clear and concise description of what you expected to happen.

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How are you executing DVT?
Ex: CLI commands on local computer or VM, within a DAG, Cloud Run job, etc

Additional context
Add any other context about the problem here.

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    type: bugError or flaw in code with unintended results or allowing sub-optimal usage patterns.

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