thevar1able/ClickHouse
1
0
Fork 0
mirror of https://github.com/ClickHouse/ClickHouse.git synced 2024-12-15 02:41:59 +00:00
Code Issues Packages Projects Releases Wiki Activity

Revert "Implemented requested changes"

Browse Source 
This reverts commit db4735a105.
This commit is contained in:
yariks5s 2023-07-26 15:20:54 +00:00
parent db4735a105
commit adb46fa174
1 changed files with 27 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
src/Functions/array/arrayIntersect.cpp
View File

@ -510,7 +510,7 @@ ColumnPtr FunctionArrayIntersect::execute(const UnpackedArrays & arrays, Mutable
map.clear();
bool all_has_nullable = all_nullable;
bool current_has_nullable;
bool current_has_nullable = false;
for (size_t arg_num = 0; arg_num < args; ++arg_num)
{
@ -549,8 +549,7 @@ ColumnPtr FunctionArrayIntersect::execute(const UnpackedArrays & arrays, Mutable
++(*value);
}
}
// We update offsets for all the arrays except the first one. Offsets for the first array would be updated later.
// It is needed to iterate the first array again so that the elements in the result would have fixed order.
if (arg_num)
{
prev_off[arg_num] = off;
@ -571,21 +570,15 @@ ColumnPtr FunctionArrayIntersect::execute(const UnpackedArrays & arrays, Mutable
else
off = (*arg.offsets)[row];
bool is_map_serialized = false;
for (auto i : collections::range(prev_off[0], off))
{
all_has_nullable = all_nullable;
current_has_nullable = false;
typename Map::LookupResult pair = nullptr;
if (arg.null_map && (*arg.null_map)[i])
{
current_has_nullable = true;
if (all_has_nullable && !null_added)
{
++result_offset;
result_data.insertDefault();
null_map.push_back(1);
null_added = true;
}
if (null_added)
continue;
}
@ -598,37 +591,51 @@ ColumnPtr FunctionArrayIntersect::execute(const UnpackedArrays & arrays, Mutable
else
{
const char * data = nullptr;
if (!is_map_serialized)
{
pair = map.find(columns[0]->serializeValueIntoArena(i, arena, data));
is_map_serialized = true;
}
pair = map.find(columns[0]->serializeValueIntoArena(i, arena, data));
}
prev_off[0] = off;
if (arg.is_const)
prev_off[0] = 0;
if (!current_has_nullable)
all_has_nullable = false;
if (pair && pair->getMapped() == args)
{
// We increase pair->getMapped() here to not skip duplicate values from the first array.
++pair->getMapped();
++result_offset;
if constexpr (is_numeric_column)
{
result_data.insertValue(pair->getKey());
if (pair->getKey() == columns[0]->getElement(i))
{
result_data.insertValue(pair->getKey());
}
}
else if constexpr (std::is_same_v<ColumnType, ColumnString> || std::is_same_v<ColumnType, ColumnFixedString>)
{
result_data.insertData(pair->getKey().data, pair->getKey().size);
if (pair->getKey() == columns[0]->getDataAt(i))
{
result_data.insertData(pair->getKey().data, pair->getKey().size);
}
}
else
{
const char * data = nullptr;
result_data.deserializeAndInsertFromArena(pair->getKey().data);
if (pair->getKey() == columns[0]->serializeValueIntoArena(i, arena, data))
{
result_data.deserializeAndInsertFromArena(pair->getKey().data);
}
}
if (all_nullable)
null_map.push_back(0);
}
if (all_has_nullable && !null_added)
{
++result_offset;
result_data.insertDefault();
null_map.push_back(1);
null_added = true;
}
}
result_offsets.getElement(row) = result_offset;