FIX: Allowing access using column name and index

[jahnvi480]

This pull request introduces several enhancements to the database interaction logic and improves the testing framework for SQL data types. The most significant changes include adding support for named tuples in fetchone results, improving error handling in the C++ bindings, and refactoring test cases for better cleanup and assertion practices.

Enhancements to fetchone functionality:

• mssql_python/cursor.py: Modified the fetchone method to return a named tuple when valid field names are available, enabling attribute-based access to query results. Falls back to a regular tuple if named tuple creation fails.
• mssql_python/cursor.py: Added collections import to support named tuple creation.

Improvements to C++ bindings:

• mssql_python/pybind/ddbc_bindings.cpp: Updated FetchOne_wrap to handle named tuples on the Python side, added error handling for column count retrieval, and improved logging for debugging.

Refactoring and cleanup in test cases:

• tests/test_004_cursor.py: Refactored multiple test cases to use the drop_table_if_exists helper function for cleanup, ensuring tables are dropped before and after tests. [1] [2] [3]
• tests/test_004_cursor.py: Replaced direct tuple comparisons in assertions with the compare_row_value helper function for improved readability and flexibility. [1] [2] [3]

Debugging and logging enhancements:

• main.py: Added debug statements to print the type and content of rows, and safely handle cases where rows is None.

[Copilot]

Pull Request Overview

This PR improves database query result handling by introducing named tuple support in fetchone(), enhancing error handling in the C++ bindings, and refactoring the test framework for better maintainability.

• Enhanced fetchone() to support attribute access via named tuples.
• Improved error and logging behavior in the C++ bindings.
• Refactored test cases to use a helper function for table cleanup and row value comparisons.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
tests/test_004_cursor.py	Refactored tests to use drop_table_if_exists and compare_row_value for clearer assertions and cleanup.
mssql_python/pybind/ddbc_bindings.cpp	Updated FetchOne_wrap with better error handling and corrected docstring for parameter usage.
mssql_python/cursor.py	Modified fetchone to return a namedtuple when possible, enabling both index and attribute access.
main.py	Added debug prints for row type and content to help trace fetchone results.

Comments suppressed due to low confidence (1)

mssql_python/pybind/ddbc_bindings.cpp:1810

• The parameter name in this docstring should be updated to 'row_list' to match the function signature for clarity.

// @param row: A Python object reference that will be populated with a named tuple containing the fetched row data.

[sumitmsft]

The PR follows good practices, is secure, and robustly upgrades the user-facing API. With minor refactoring for efficiency and logging, it would be even better. No memory leaks, deadlocks, or security issues identified. Logic is correct, and changes are well-tested.