FEAT: Adding execute in connection class

[jahnvi480]

Work Item / Issue Reference

AB#34912

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Summary

This pull request introduces several enhancements and fixes to the connection and cursor lifecycle management in mssql_python, adds new convenience methods for executing SQL statements, and improves error handling for transaction operations. It also updates the test suite by reorganizing and removing redundant tests.

Key changes include new convenience methods for executing SQL, improved resource management for cursors, stricter error handling for transaction operations, and test suite cleanup.

Connection and Cursor Lifecycle Improvements

• Added a new execute method to the Connection class for convenient one-off SQL execution, which automatically manages cursor creation and cleanup. This is not part of the DB API but simplifies simple query use cases.
• Added a new batch_execute method to the Connection class to efficiently execute multiple SQL statements using a single cursor, supporting parameterized queries and optional cursor reuse/auto-close.
• Improved resource management by ensuring cursors are properly tracked and removed from the connection’s internal WeakSet when closed, both in Connection._remove_cursor and within the Cursor.close method.

Transaction Error Handling

• Updated commit and rollback methods in the Connection class to raise an InterfaceError if called on a closed connection, improving robustness and compliance with DB API expectations.

Test Suite Updates

• Removed the redundant test_decimal_separator and test_lowercase_attribute tests, consolidating decimal separator edge case testing and cleaning up the test suite for clarity and maintainability.
• Added a new test for decimal separator functionality, ensuring correct behavior for default values, setting, and invalid inputs.

The base branch was changed.

[Copilot]

Pull Request Overview

This pull request introduces a new execute method to the Connection class for convenient SQL execution without manually creating cursors, along with comprehensive testing for this feature. The changes include extensive test coverage for both new functionality and existing features like decimal separator handling and encoding/decoding methods.

Key changes include:

• Added Connection.execute() convenience method that creates and returns a cursor with executed SQL
• Added Connection.batch_execute() method for executing multiple SQL statements efficiently
• Enhanced connection lifecycle management with proper cursor tracking and error handling for closed connections

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
mssql_python/connection.py	Implements execute() and batch_execute() methods with cursor tracking and improved error handling for closed connections
mssql_python/cursor.py	Adds cursor cleanup logic to remove cursor from connection tracking when closed
tests/test_003_connection.py	Extensive tests for new execute/batch_execute methods plus encoding/decoding functionality
tests/test_004_cursor.py	Tests for lowercase attribute and decimal separator functionality with database operations
tests/test_001_globals.py	Tests for decimal separator global functionality

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