diff --git a/src/Columns/ColumnArray.cpp b/src/Columns/ColumnArray.cpp index 44b17c89ae1..0214375122f 100644 --- a/src/Columns/ColumnArray.cpp +++ b/src/Columns/ColumnArray.cpp @@ -43,29 +43,34 @@ namespace ErrorCodes static constexpr size_t max_array_size_as_field = 1000000; -ColumnArray::ColumnArray(MutableColumnPtr && nested_column, MutableColumnPtr && offsets_column) +ColumnArray::ColumnArray(MutableColumnPtr && nested_column, MutableColumnPtr && offsets_column, bool check_offsets) : data(std::move(nested_column)), offsets(std::move(offsets_column)) { - const ColumnOffsets * offsets_concrete = typeid_cast(offsets.get()); - - if (!offsets_concrete) - throw Exception(ErrorCodes::LOGICAL_ERROR, "offsets_column must be a ColumnUInt64"); - - if (!offsets_concrete->empty() && data && !data->empty()) + if (check_offsets) { - Offset last_offset = offsets_concrete->getData().back(); + const ColumnOffsets * offsets_concrete = typeid_cast(offsets.get()); - /// This will also prevent possible overflow in offset. - if (data->size() != last_offset) - throw Exception(ErrorCodes::LOGICAL_ERROR, - "offsets_column has data inconsistent with nested_column. Data size: {}, last offset: {}", - data->size(), last_offset); + if (!offsets_concrete) + throw Exception(ErrorCodes::LOGICAL_ERROR, "offsets_column must be a ColumnUInt64"); + + if (!offsets_concrete->empty() && data && !data->empty()) + { + Offset last_offset = offsets_concrete->getData().back(); + + /// This will also prevent possible overflow in offset. + if (data->size() != last_offset) + throw Exception( + ErrorCodes::LOGICAL_ERROR, + "offsets_column has data inconsistent with nested_column. Data size: {}, last offset: {}", + data->size(), + last_offset); + } + + /** NOTE + * Arrays with constant value are possible and used in implementation of higher order functions (see FunctionReplicate). + * But in most cases, arrays with constant value are unexpected and code will work wrong. Use with caution. + */ } - - /** NOTE - * Arrays with constant value are possible and used in implementation of higher order functions (see FunctionReplicate). - * But in most cases, arrays with constant value are unexpected and code will work wrong. Use with caution. - */ } ColumnArray::ColumnArray(MutableColumnPtr && nested_column) @@ -425,20 +430,14 @@ void ColumnArray::insertManyFromTuple(const ColumnArray & src, size_t position, if (tuple_size != src_tuple_size) throw Exception(ErrorCodes::ILLEGAL_COLUMN, "Nested tuple size mismatch: {} vs {}", tuple_size, src_tuple_size); - MutableColumns temporary_arrays(tuple_size); - Columns src_temporary_arrays(tuple_size); - for (size_t i = 0; i < tuple_size; ++i) - { - temporary_arrays[i] = ColumnArray::create(tuple.getColumn(i).assumeMutable(), getOffsetsPtr()->assumeMutable()); - src_temporary_arrays[i] = ColumnArray::create(src_tuple.getColumn(i).assumeMutable(), src.getOffsetsPtr()->assumeMutable()); - assert_cast(*temporary_arrays[i]) - .insertManyFromImpl(assert_cast(*src_temporary_arrays[i]), position, length, false); - } - Columns tuple_columns(tuple_size); for (size_t i = 0; i < tuple_size; ++i) - tuple_columns[i] = assert_cast(*temporary_arrays[i]).getDataPtr(); - + { + auto array_of_element = ColumnArray(tuple.getColumn(i).assumeMutable(), getOffsetsPtr()->assumeMutable(), false); + auto src_array_of_element = ColumnArray(src_tuple.getColumn(i).assumeMutable(), src.getOffsetsPtr()->assumeMutable()); + array_of_element.insertManyFromImpl(src_array_of_element, position, length, false); + tuple_columns[i] = array_of_element.getDataPtr(); + } getDataPtr() = ColumnTuple::create(std::move(tuple_columns)); } @@ -448,12 +447,12 @@ void ColumnArray::insertManyFromNullable(const ColumnArray & src, size_t positio const ColumnNullable & src_nullable = assert_cast(src.getData()); /// Process nested column without updating array offsets - auto array_of_nested = ColumnArray(nullable.getNestedColumnPtr()->assumeMutable(), getOffsetsPtr()->assumeMutable()); + auto array_of_nested = ColumnArray(nullable.getNestedColumnPtr()->assumeMutable(), getOffsetsPtr()->assumeMutable(), false); auto src_array_of_nested = ColumnArray(src_nullable.getNestedColumnPtr()->assumeMutable(), src.getOffsetsPtr()->assumeMutable()); array_of_nested.insertManyFromImpl(src_array_of_nested, position, length, false); /// Process null map column without updating array offsets - auto array_of_null_map = ColumnArray(nullable.getNullMapColumnPtr()->assumeMutable(), getOffsetsPtr()->assumeMutable()); + auto array_of_null_map = ColumnArray(nullable.getNullMapColumnPtr()->assumeMutable(), getOffsetsPtr()->assumeMutable(), false); auto src_array_of_null_map = ColumnArray(src_nullable.getNullMapColumnPtr()->assumeMutable(), src.getOffsetsPtr()->assumeMutable()); array_of_null_map.insertManyFromImpl(src_array_of_null_map, position, length, false); diff --git a/src/Columns/ColumnArray.h b/src/Columns/ColumnArray.h index 765f86ec552..8c4d103e7d0 100644 --- a/src/Columns/ColumnArray.h +++ b/src/Columns/ColumnArray.h @@ -21,7 +21,7 @@ private: friend class COWHelper, ColumnArray>; /** Create an array column with specified values and offsets. */ - ColumnArray(MutableColumnPtr && nested_column, MutableColumnPtr && offsets_column); + ColumnArray(MutableColumnPtr && nested_column, MutableColumnPtr && offsets_column, bool check_offsets = true); /** Create an empty column of arrays with the type of values as in the column `nested_column` */ explicit ColumnArray(MutableColumnPtr && nested_column);