FEAT: Adding setinputsizes

[jahnvi480]

Work Item / Issue Reference

AB#32890

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Summary

This pull request adds comprehensive support for advanced SQL metadata and catalog functions to the MSSQL Python bindings, making it easier to interact with database schema information and supported data types from Python. The changes include new wrapper functions and Python bindings for several ODBC catalog APIs, the addition of SQL type constants, and enhancements to the constants module for easier type validation and categorization.

SQL Catalog & Metadata API Support

• Added wrapper functions and Python bindings for ODBC catalog APIs: SQLGetTypeInfo, SQLProcedures, SQLForeignKeys, SQLPrimaryKeys, SQLSpecialColumns, SQLStatistics, and SQLColumns in ddbc_bindings.cpp. These allow Python code to directly query metadata about tables, columns, keys, procedures, and supported types.

Constants and Type Handling

• Exported SQL type constants (e.g., SQL_CHAR, SQL_INTEGER, etc.) at the module level in __init__.py for easier use in Python code.
• Added new constants to ConstantsDDBC for catalog API parameters such as SQL_SCOPE_CURROW, SQL_BEST_ROWID, SQL_ROWVER, and others.
• Introduced the SQLTypes class in constants.py, providing methods to retrieve sets of valid SQL types and categorize them (e.g., string types, numeric types), which can help with input validation and type checking in Python.

These changes significantly improve the ability of Python applications to introspect and work with database schema and type information, making your code more robust and flexible when dealing with SQL Server databases.

[sumitmsft]

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The base branch was changed.

[Copilot]

Pull Request Overview

This PR adds comprehensive support for advanced SQL metadata and catalog functions to the MSSQL Python bindings, implementing setinputsizes functionality and various ODBC catalog APIs for database introspection.

• Addition of setinputsizes method for explicit SQL parameter type specification
• Implementation of ODBC catalog APIs (SQLGetTypeInfo, SQLProcedures, SQLForeignKeys, etc.)
• Addition of SQL type constants at module level and enhanced constants management

Reviewed Changes

Copilot reviewed 7 out of 8 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
tests/test_003_connection.py	Adds comprehensive test suite for connection methods, output converters, and timeout functionality with some duplicate code removal
tests/test_001_globals.py	Adds tests for decimal separator functionality with some duplicate test definitions
mssql_python/pybind/ddbc_bindings.h	Defines new ODBC catalog function type definitions and external declarations
mssql_python/pybind/ddbc_bindings.cpp	Implements wrapper functions for catalog APIs and adds Python bindings
mssql_python/cursor.py	Implements setinputsizes method and adds catalog API methods (getTypeInfo, procedures, etc.)
mssql_python/constants.py	Adds new constants for catalog APIs and SQLTypes utility class
mssql_python/init.py	Exports SQL type constants at module level for easier access

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