add_library_unity(
  duckdb_expression
  OBJECT
  between_expression.cpp
  case_expression.cpp
  cast_expression.cpp
  collate_expression.cpp
  conjunction_expression.cpp
  columnref_expression.cpp
  comparison_expression.cpp
  constant_expression.cpp
  default_expression.cpp
  function_expression.cpp
  lambda_expression.cpp
  operator_expression.cpp
  parameter_expression.cpp
  positional_reference_expression.cpp
  star_expression.cpp
  subquery_expression.cpp
  window_expression.cpp)
set(ALL_OBJECT_FILES
    ${ALL_OBJECT_FILES} $<TARGET_OBJECTS:duckdb_expression>
    PARENT_SCOPE)