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fix conversion from const map with nulls

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This commit is contained in:
Anton Popov 2021-04-09 20:50:10 +03:00
parent 30f2d839c3
commit 329c9033a8
3 changed files with 14 additions and 4 deletions
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8
src/Functions/FunctionsConversion.h
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@ -2641,7 +2641,7 @@ private:
WrapperType createMapToMapWrrapper(const DataTypes & from_kv_types, const DataTypes & to_kv_types) const
{
return [element_wrappers = getElementWrappers(from_kv_types, to_kv_types), from_kv_types, to_kv_types]
(ColumnsWithTypeAndName & arguments, const DataTypePtr &, const ColumnNullable * nullable_source, size_t input_rows_count) -> ColumnPtr
(ColumnsWithTypeAndName & arguments, const DataTypePtr &, const ColumnNullable * nullable_source, size_t /*input_rows_count*/) -> ColumnPtr
{
const auto * col = arguments.front().column.get();
const auto & column_map = typeid_cast<const ColumnMap &>(*col);
@ -2651,7 +2651,7 @@ private:
for (size_t i = 0; i < 2; ++i)
{
ColumnsWithTypeAndName element = {{nested_data.getColumnPtr(i), from_kv_types[i], ""}};
converted_columns[i] = element_wrappers[i](element, to_kv_types[i], nullable_source, input_rows_count);
converted_columns[i] = element_wrappers[i](element, to_kv_types[i], nullable_source, (element[0].column)->size());
}
return ColumnMap::create(converted_columns[0], converted_columns[1], column_map.getNestedColumn().getOffsetsPtr());
@ -2662,7 +2662,7 @@ private:
WrapperType createArrayToMapWrrapper(const DataTypes & from_kv_types, const DataTypes & to_kv_types) const
{
return [element_wrappers = getElementWrappers(from_kv_types, to_kv_types), from_kv_types, to_kv_types]
(ColumnsWithTypeAndName & arguments, const DataTypePtr &, const ColumnNullable * nullable_source, size_t input_rows_count) -> ColumnPtr
(ColumnsWithTypeAndName & arguments, const DataTypePtr &, const ColumnNullable * nullable_source, size_t /*input_rows_count*/) -> ColumnPtr
{
const auto * col = arguments.front().column.get();
const auto & column_array = typeid_cast<const ColumnArray &>(*col);
@ -2672,7 +2672,7 @@ private:
for (size_t i = 0; i < 2; ++i)
{
ColumnsWithTypeAndName element = {{nested_data.getColumnPtr(i), from_kv_types[i], ""}};
converted_columns[i] = element_wrappers[i](element, to_kv_types[i], nullable_source, input_rows_count);
converted_columns[i] = element_wrappers[i](element, to_kv_types[i], nullable_source, (element[0].column)->size());
}
return ColumnMap::create(converted_columns[0], converted_columns[1], column_array.getOffsetsPtr());

1
tests/queries/0_stateless/01803_const_nullable_map.reference Normal file
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@ -0,0 +1 @@
0

9
tests/queries/0_stateless/01803_const_nullable_map.sql Normal file
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@ -0,0 +1,9 @@
DROP TABLE IF EXISTS t_map_null;
SET allow_experimental_map_type = 1;
CREATE TABLE t_map_null (a Map(String, String), b String) engine = MergeTree() ORDER BY a;
INSERT INTO t_map_null VALUES (map('a', 'b', 'c', 'd'), 'foo');
SELECT count() FROM t_map_null WHERE a = map('name', NULL, '', NULL);
DROP TABLE t_map_null;