thevar1able/ClickHouse
1
0
Fork 0
mirror of https://github.com/ClickHouse/ClickHouse.git synced 2024-11-21 07:01:59 +00:00
Code Issues Packages Projects Releases Wiki Activity

Fix default value in join types with non-zero default (close #18197)

Browse Source
This commit is contained in:
vdimir 2021-01-21 16:46:46 +03:00
parent e75b116466
commit 2f11fdf4df
No known key found for this signature in database
GPG Key ID: F57B3E10A21DBB31
6 changed files with 118 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/Interpreters/HashJoin.cpp
View File

@ -702,7 +702,7 @@ public:
if (lazy_defaults_count)
{
for (size_t j = 0; j < right_indexes.size(); ++j)
columns[j]->insertManyDefaults(lazy_defaults_count);
JoinCommon::addDefaultValues(columns[j], type_name[j].first, lazy_defaults_count);
lazy_defaults_count = 0;
}
}

14
src/Interpreters/MergeJoin.cpp
View File

@ -398,7 +398,8 @@ bool joinEquals(const Block & left_block, const Block & right_block, const Block
}
template <bool copy_left>
void joinInequalsLeft(const Block & left_block, MutableColumns & left_columns, MutableColumns & right_columns,
void joinInequalsLeft(const Block & left_block, MutableColumns & left_columns,
const Block & right_block, MutableColumns & right_columns,
size_t start, size_t end)
{
if (end <= start)
@ -408,9 +409,10 @@ void joinInequalsLeft(const Block & left_block, MutableColumns & left_columns, M
if constexpr (copy_left)
copyLeftRange(left_block, left_columns, start, rows_to_add);
/// append nulls
for (auto & column : right_columns)
column->insertManyDefaults(rows_to_add);
for (size_t i = 0; i < right_columns.size(); ++i)
{
JoinCommon::addDefaultValues(right_columns[i], right_block.getByPosition(i).type, rows_to_add);
}
}
}
@ -696,7 +698,7 @@ void MergeJoin::joinSortedBlock(Block & block, ExtraBlockPtr & not_processed)
}
left_cursor.nextN(left_key_tail);
joinInequalsLeft<is_all>(block, left_columns, right_columns, left_cursor.position(), left_cursor.end());
joinInequalsLeft<is_all>(block, left_columns, right_columns_to_add, right_columns, left_cursor.position(), left_cursor.end());
//left_cursor.nextN(left_cursor.end() - left_cursor.position());
changeLeftColumns(block, std::move(left_columns));
@ -773,7 +775,7 @@ bool MergeJoin::leftJoin(MergeJoinCursor & left_cursor, const Block & left_block
Range range = left_cursor.getNextEqualRange(right_cursor);
joinInequalsLeft<is_all>(left_block, left_columns, right_columns, left_unequal_position, range.left_start);
joinInequalsLeft<is_all>(left_block, left_columns, right_columns_to_add, right_columns, left_unequal_position, range.left_start);
if (range.empty())
break;

33
src/Interpreters/join_common.cpp
View File

@ -276,6 +276,20 @@ void joinTotals(const Block & totals, const Block & columns_to_add, const Names
}
}
void addDefaultValues(MutableColumnPtr & column, const DataTypePtr & typ, size_t count)
{
if (typ->getTypeId() == column->getDataType())
{
column->insertManyDefaults(count);
}
else
{
auto default_val = typ->getDefault();
for (size_t i = 0; i < count; ++i)
column->insert(default_val);
}
}
}
@ -387,9 +401,24 @@ void NotJoined::correctLowcardAndNullability(MutableColumns & columns_right)
void NotJoined::addLeftColumns(Block & block, size_t rows_added) const
{
/// @note it's possible to make ColumnConst here and materialize it later
for (size_t pos : column_indices_left)
block.getByPosition(pos).column = block.getByPosition(pos).column->cloneResized(rows_added);
{
auto & col = block.getByPosition(pos);
if (col.column->getDataType() == col.type->getTypeId())
{
col.column = col.column->cloneResized(rows_added);
}
else
{
auto mut_col = col.column->cloneEmpty();
mut_col->reserve(rows_added);
const auto default_value = col.type->getDefault();
for (size_t i = 0; i < rows_added; ++i)
mut_col->insert(default_value);
col.column = std::move(mut_col);
}
}
}
void NotJoined::addRightColumns(Block & block, MutableColumns & columns_right) const

2
src/Interpreters/join_common.h
View File

@ -34,6 +34,8 @@ void checkTypesOfKeys(const Block & block_left, const Names & key_names_left, co
void createMissedColumns(Block & block);
void joinTotals(const Block & totals, const Block & columns_to_add, const Names & key_names_right, Block & block);
void addDefaultValues(MutableColumnPtr & column, const DataTypePtr & typ, size_t count);
}
/// Creates result from right table data in RIGHT and FULL JOIN when keys are not present in left table.

36
tests/queries/0_stateless/01656_join_defaul_enum.reference Normal file
View File

@ -0,0 +1,36 @@
1 First
2 Second
3 First
1 First
2 Second
3 First
4 Second
2 Second
4 Second
2 Second
4 Second
1 First
2 Second
3 First
1 First
2 Second
3 First
4 Second
1 First
2 Second
3 First
1 First
2 Second
3 First
4 Second
2 Second
4 Second
2 Second
4 Second
1 First
2 Second
3 First
1 First
2 Second
3 First
4 Second

40
tests/queries/0_stateless/01656_join_defaul_enum.sql Normal file
View File

@ -0,0 +1,40 @@
DROP DATABASE IF EXISTS test_01656;
CREATE DATABASE test_01656;
USE test_01656;
DROP TABLE IF EXISTS table_key;
DROP TABLE IF EXISTS table_with_enum;
CREATE TABLE table_key (keycol UInt16) ENGINE = MergeTree() ORDER BY (keycol) PARTITION BY tuple();
CREATE TABLE table_with_enum (keycol UInt16, enum_col Enum8('First' = 1,'Second' = 2))
ENGINE = MergeTree() ORDER BY (keycol) PARTITION BY tuple();
INSERT INTO table_key VALUES (1), (2), (3);
INSERT INTO table_with_enum VALUES (2, 'Second'), (4, 'Second');
SET join_algorithm = 'hash';
SELECT keycol, enum_col FROM table_key LEFT JOIN table_with_enum USING (keycol) ORDER BY keycol;
SELECT keycol, enum_col FROM table_key FULL JOIN table_with_enum USING (keycol) ORDER BY keycol;
SELECT keycol, enum_col FROM table_key RIGHT JOIN table_with_enum USING (keycol) ORDER BY keycol;
SELECT keycol, enum_col FROM table_with_enum LEFT JOIN table_key USING (keycol) ORDER BY keycol;
SELECT keycol, enum_col FROM table_with_enum RIGHT JOIN table_key USING (keycol) ORDER BY keycol;
SELECT keycol, enum_col FROM table_with_enum FULL JOIN table_key USING (keycol) ORDER BY keycol;
SET join_algorithm = 'partial_merge';
SELECT keycol, enum_col FROM table_key LEFT JOIN table_with_enum USING (keycol) ORDER BY keycol;
SELECT keycol, enum_col FROM table_key FULL JOIN table_with_enum USING (keycol) ORDER BY keycol;
SELECT keycol, enum_col FROM table_key RIGHT JOIN table_with_enum USING (keycol) ORDER BY keycol;
SELECT keycol, enum_col FROM table_with_enum LEFT JOIN table_key USING (keycol) ORDER BY keycol;
SELECT keycol, enum_col FROM table_with_enum RIGHT JOIN table_key USING (keycol) ORDER BY keycol;
SELECT keycol, enum_col FROM table_with_enum FULL JOIN table_key USING (keycol) ORDER BY keycol;
DROP TABLE IF EXISTS table_key;
DROP TABLE IF EXISTS table_with_enum;
DROP DATABASE IF EXISTS test_01656;