pub fn compare_columns<Op: CompareOp>(
left: &ColumnWithName,
right: &ColumnWithName,
fragment: Fragment,
error_fn: impl FnOnce(Fragment, ValueType, ValueType) -> Diagnostic,
) -> Result<ColumnWithName>pub fn compare_columns<Op: CompareOp>(
left: &ColumnWithName,
right: &ColumnWithName,
fragment: Fragment,
error_fn: impl FnOnce(Fragment, ValueType, ValueType) -> Diagnostic,
) -> Result<ColumnWithName>