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#### `YQL-20804`: Fix Decimal type conversion ✎
- Enhanced type annotation system to properly handle Decimal type conversions by introducing a new `EDecimalConversionMode` configuration option that allows controlling how common types are computed for Decimal values
- Modified core type annotation functions to accept and utilize a `TTypeAnnotationContext` parameter, ensuring consistent type resolution across join operations and type conversions
- Updated join-related functions and peephole optimizations to pass type context information, fixing issues with Decimal type compatibility during join key processing
- Added comprehensive unit tests to verify Decimal type conversion behavior and ensure proper casting between different Decimal precisions and scales
- Extended type annotation infrastructure to support both strict and lenient Decimal conversion modes, improving error handling and type inference for edge cases
<a href="https://nda.ya.ru/t/qa0kX64r7DqvtN"><font size="2">Autodescription by Yandex Code Assistant</font></a>
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