When columnDefault not enclosed in parentheses, will recognize the default value as a literal and thus becomes a string,DuckDB returns the default value without parentheses, so we need to add them.
DuckDB does not support CURRENT_TIMESTAMP(6), so we replace it with CURRENT_TIMESTAMP.
When columnDefault not enclosed in parentheses, will recognize the default value as a literal and thus becomes a string,DuckDB returns the default value without parentheses, so we need to add them. DuckDB does not support CURRENT_TIMESTAMP(6), so we replace it with CURRENT_TIMESTAMP.