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Names should accurately reflect their purpose, behavior, and semantic meaning to avoid confusion and improve code readability. Avoid misleading names that don’t match the actual functionality or content.

Key principles:

• Function names should match their actual behavior (e.g., projectCorrelatedColumns when called with non-correlated data should be renamed to reflect what it actually does)
• Variable names should be specific and unambiguous (e.g., cached_reader is misleading when it specifically refers to CachedInMemoryReadBufferFromFile - use page_cache_reader instead)
• Parameter names should clearly indicate their role (e.g., column_idx should be presence_column_idx if it’s specifically the index of a presence column)
• Avoid abbreviations that sacrifice clarity (e.g., use storage or table instead of tbl)
• Method names should indicate what they return or do (e.g., getHivePart() should be split into separate methods if it also performs normalization)

Example of improvement:

// Before: misleading name
void projectCorrelatedColumns(rhs_plan, ...);  // but no correlation involved

// After: accurate name  
void projectIdentifierColumns(rhs_plan, ...);  // clearly indicates projecting from identifiers

// Before: ambiguous variable
auto * cached_reader = typeid_cast<CachedInMemoryReadBufferFromFile *>(&reader);

// After: specific variable
auto * page_cache_reader = typeid_cast<CachedInMemoryReadBufferFromFile *>(&reader);

This ensures that code is self-documenting and reduces cognitive load when reading and maintaining the codebase.