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feat(c/driver/postgresql): customize numeric conversion #1521

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feat(c/driver/postgresql): customize numeric conversion #1521

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Commits on Feb 6, 2024

  1. feat(c/driver/postgresql): customize numeric conversion 

    - introduces statement-level option `adbc.postgresql.numeric_conversion`
- the option is used to tell result reader what strategy to use when converting numeric values to Arrow data; since this cannot be done 1-1, the reader has to convert to other data type
  - clients can use this option to specify the strategy
- value can be either `to_string` or `to_double`
  - when not specified defaults to `to_string`
  - `to_string` -> numerics converted loss-less to string representation
  - when `to_double` -> numeric converted to double (with possible loss of precision)
    @lupko
    lupko committed Feb 6, 2024
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