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support 'keys' and 'values' subcolumns in type Map

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This commit is contained in:
Anton Popov 2021-01-19 14:05:21 +03:00
parent ee4cc94e6c
commit bc796ec391
6 changed files with 57 additions and 17 deletions
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10
src/DataTypes/DataTypeMap.cpp
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@ -65,6 +65,16 @@ static IColumn & extractNestedColumn(IColumn & column)
return assert_cast<ColumnMap &>(column).getNestedColumn();
}
DataTypePtr DataTypeMap::tryGetSubcolumnType(const String & subcolumn_name) const
{
return nested->tryGetSubcolumnType(subcolumn_name);
}
ColumnPtr DataTypeMap::getSubcolumn(const String & subcolumn_name, const IColumn & column) const
{
return nested->getSubcolumn(subcolumn_name, extractNestedColumn(column));
}
void DataTypeMap::serializeBinary(const Field & field, WriteBuffer & ostr) const
{
const auto & map = get<const Map &>(field);

4
src/DataTypes/DataTypeMap.h
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@ -32,6 +32,9 @@ public:
bool canBeInsideNullable() const override { return false; }
DataTypePtr tryGetSubcolumnType(const String & subcolumn_name) const override;
ColumnPtr getSubcolumn(const String & subcolumn_name, const IColumn & column) const override;
void serializeBinary(const Field & field, WriteBuffer & ostr) const override;
void deserializeBinary(Field & field, ReadBuffer & istr) const override;
void serializeBinary(const IColumn & column, size_t row_num, WriteBuffer & ostr) const override;
@ -45,7 +48,6 @@ public:
void serializeTextCSV(const IColumn & column, size_t row_num, WriteBuffer & ostr, const FormatSettings &) const override;
void deserializeTextCSV(IColumn & column, ReadBuffer & istr, const FormatSettings &) const override;
void enumerateStreamsImpl(const StreamCallback & callback, SubstreamPath & path) const override;
void serializeBinaryBulkStatePrefixImpl(

9
tests/queries/0_stateless/01475_read_subcolumns.reference
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@ -19,3 +19,12 @@ baz
0
1
2
====map====
['a','b']
['a','c']
['b','c']
[1,2]
[3,4]
[5,6]
4
4

19
tests/queries/0_stateless/01475_read_subcolumns.sql
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@ -42,3 +42,22 @@ SELECT ProfileEvents.Values[indexOf(ProfileEvents.Names, 'FileOpen')]
FROM system.query_log
WHERE (type = 'QueryFinish') AND (lower(query) LIKE lower('SELECT n.null FROM %t_nul%'))
AND event_time > now() - INTERVAL 10 SECOND AND current_database = currentDatabase();
SELECT '====map====';
SET allow_experimental_map_type = 1;
DROP TABLE IF EXISTS t_map;
CREATE TABLE t_map (m Map(String, UInt32)) ENGINE = MergeTree ORDER BY tuple() SETTINGS min_bytes_for_wide_part = 0;
INSERT INTO t_map VALUES (map('a', 1, 'b', 2)) (map('a', 3, 'c', 4)), (map('b', 5, 'c', 6));
--- will read 4 files: keys.bin, keys.mrk2, size0.bin, size0.mrk2
SYSTEM DROP MARK CACHE;
SELECT m.keys FROM t_map;
SYSTEM DROP MARK CACHE;
SELECT m.values FROM t_map;
SYSTEM FLUSH LOGS;
SELECT ProfileEvents.Values[indexOf(ProfileEvents.Names, 'FileOpen')]
FROM system.query_log
WHERE (type = 'QueryFinish') AND (lower(query) LIKE lower('SELECT m.% FROM %t_map%'))
AND event_time > now() - INTERVAL 10 SECOND AND current_database = currentDatabase();

24
tests/queries/0_stateless/01475_read_subcolumns_storages.reference
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@ -1,18 +1,18 @@
Log
100 [1,2,3] [[[1,2],[],[4]],[[5,6],[7,8]],[[]]] [1,NULL,2] ('foo',200)
100 0 [1,2,3] 3 [[[1,2],[],[4]],[[5,6],[7,8]],[[]]] 3 [3,2,1] [[2,0,1],[2,2],[0]] [1,NULL,2] 3 [0,1,0] ('foo',200) foo 200
100 [1,2,3] [[[1,2],[],[4]],[[5,6],[7,8]],[[]]] [1,NULL,2] ('foo',200) {'foo':1,'bar':42}
100 0 [1,2,3] 3 [[[1,2],[],[4]],[[5,6],[7,8]],[[]]] 3 [3,2,1] [[2,0,1],[2,2],[0]] [1,NULL,2] 3 [0,1,0] ('foo',200) foo 200 {'foo':1,'bar':42} ['foo','bar'] [1,42]
TinyLog
100 [1,2,3] [[[1,2],[],[4]],[[5,6],[7,8]],[[]]] [1,NULL,2] ('foo',200)
100 0 [1,2,3] 3 [[[1,2],[],[4]],[[5,6],[7,8]],[[]]] 3 [3,2,1] [[2,0,1],[2,2],[0]] [1,NULL,2] 3 [0,1,0] ('foo',200) foo 200
100 [1,2,3] [[[1,2],[],[4]],[[5,6],[7,8]],[[]]] [1,NULL,2] ('foo',200) {'foo':1,'bar':42}
100 0 [1,2,3] 3 [[[1,2],[],[4]],[[5,6],[7,8]],[[]]] 3 [3,2,1] [[2,0,1],[2,2],[0]] [1,NULL,2] 3 [0,1,0] ('foo',200) foo 200 {'foo':1,'bar':42} ['foo','bar'] [1,42]
Memory
100 [1,2,3] [[[1,2],[],[4]],[[5,6],[7,8]],[[]]] [1,NULL,2] ('foo',200)
100 0 [1,2,3] 3 [[[1,2],[],[4]],[[5,6],[7,8]],[[]]] 3 [3,2,1] [[2,0,1],[2,2],[0]] [1,NULL,2] 3 [0,1,0] ('foo',200) foo 200
100 [1,2,3] [[[1,2],[],[4]],[[5,6],[7,8]],[[]]] [1,NULL,2] ('foo',200) {'foo':1,'bar':42}
100 0 [1,2,3] 3 [[[1,2],[],[4]],[[5,6],[7,8]],[[]]] 3 [3,2,1] [[2,0,1],[2,2],[0]] [1,NULL,2] 3 [0,1,0] ('foo',200) foo 200 {'foo':1,'bar':42} ['foo','bar'] [1,42]
MergeTree ORDER BY tuple() SETTINGS min_bytes_for_compact_part='10M'
100 [1,2,3] [[[1,2],[],[4]],[[5,6],[7,8]],[[]]] [1,NULL,2] ('foo',200)
100 0 [1,2,3] 3 [[[1,2],[],[4]],[[5,6],[7,8]],[[]]] 3 [3,2,1] [[2,0,1],[2,2],[0]] [1,NULL,2] 3 [0,1,0] ('foo',200) foo 200
100 [1,2,3] [[[1,2],[],[4]],[[5,6],[7,8]],[[]]] [1,NULL,2] ('foo',200) {'foo':1,'bar':42}
100 0 [1,2,3] 3 [[[1,2],[],[4]],[[5,6],[7,8]],[[]]] 3 [3,2,1] [[2,0,1],[2,2],[0]] [1,NULL,2] 3 [0,1,0] ('foo',200) foo 200 {'foo':1,'bar':42} ['foo','bar'] [1,42]
MergeTree ORDER BY tuple() SETTINGS min_bytes_for_wide_part='10M'
100 [1,2,3] [[[1,2],[],[4]],[[5,6],[7,8]],[[]]] [1,NULL,2] ('foo',200)
100 0 [1,2,3] 3 [[[1,2],[],[4]],[[5,6],[7,8]],[[]]] 3 [3,2,1] [[2,0,1],[2,2],[0]] [1,NULL,2] 3 [0,1,0] ('foo',200) foo 200
100 [1,2,3] [[[1,2],[],[4]],[[5,6],[7,8]],[[]]] [1,NULL,2] ('foo',200) {'foo':1,'bar':42}
100 0 [1,2,3] 3 [[[1,2],[],[4]],[[5,6],[7,8]],[[]]] 3 [3,2,1] [[2,0,1],[2,2],[0]] [1,NULL,2] 3 [0,1,0] ('foo',200) foo 200 {'foo':1,'bar':42} ['foo','bar'] [1,42]
MergeTree ORDER BY tuple() SETTINGS min_bytes_for_wide_part=0
100 [1,2,3] [[[1,2],[],[4]],[[5,6],[7,8]],[[]]] [1,NULL,2] ('foo',200)
100 0 [1,2,3] 3 [[[1,2],[],[4]],[[5,6],[7,8]],[[]]] 3 [3,2,1] [[2,0,1],[2,2],[0]] [1,NULL,2] 3 [0,1,0] ('foo',200) foo 200
100 [1,2,3] [[[1,2],[],[4]],[[5,6],[7,8]],[[]]] [1,NULL,2] ('foo',200) {'foo':1,'bar':42}
100 0 [1,2,3] 3 [[[1,2],[],[4]],[[5,6],[7,8]],[[]]] 3 [3,2,1] [[2,0,1],[2,2],[0]] [1,NULL,2] 3 [0,1,0] ('foo',200) foo 200 {'foo':1,'bar':42} ['foo','bar'] [1,42]

8
tests/queries/0_stateless/01475_read_subcolumns_storages.sh
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@ -7,7 +7,7 @@ CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
set -e
create_query="CREATE TABLE subcolumns(n Nullable(UInt32), a1 Array(UInt32),\
a2 Array(Array(Array(UInt32))), a3 Array(Nullable(UInt32)), t Tuple(s String, v UInt32))"
a2 Array(Array(Array(UInt32))), a3 Array(Nullable(UInt32)), t Tuple(s String, v UInt32), m Map(String, UInt32))"
# "StripeLog"
declare -a ENGINES=("Log" "TinyLog" "Memory" \
@ -18,8 +18,8 @@ declare -a ENGINES=("Log" "TinyLog" "Memory" \
for engine in "${ENGINES[@]}"; do
echo $engine
$CLICKHOUSE_CLIENT --query "DROP TABLE IF EXISTS subcolumns"
$CLICKHOUSE_CLIENT --query "$create_query ENGINE = $engine"
$CLICKHOUSE_CLIENT --query "INSERT INTO subcolumns VALUES (100, [1, 2, 3], [[[1, 2], [], [4]], [[5, 6], [7, 8]], [[]]], [1, NULL, 2], ('foo', 200))"
$CLICKHOUSE_CLIENT --query "$create_query ENGINE = $engine" --allow_experimental_map_type 1
$CLICKHOUSE_CLIENT --query "INSERT INTO subcolumns VALUES (100, [1, 2, 3], [[[1, 2], [], [4]], [[5, 6], [7, 8]], [[]]], [1, NULL, 2], ('foo', 200), map('foo', 1, 'bar', 42))"
$CLICKHOUSE_CLIENT --query "SELECT * FROM subcolumns"
$CLICKHOUSE_CLIENT --query "SELECT n, n.null, a1, a1.size0, a2, a2.size0, a2.size1, a2.size2, a3, a3.size0, a3.null, t, t.s, t.v FROM subcolumns"
$CLICKHOUSE_CLIENT --query "SELECT n, n.null, a1, a1.size0, a2, a2.size0, a2.size1, a2.size2, a3, a3.size0, a3.null, t, t.s, t.v, m, m.keys, m.values FROM subcolumns"
done