StorageSet::StorageSet(
const String & path_,
const String & name_,
const ColumnsDescription & columns_)
: StorageSetOrJoinBase{path_, name_, columns_},
set(std::make_shared<Set>(SizeLimits(), false))
{
Block header = getSampleBlock();
header = header.sortColumns();
set->setHeader(header);
restore();
}
void StorageSet::truncate(const ASTPtr &)
{
Poco::File(path).remove(true);
Poco::File(path).createDirectories();
Poco::File(path + "tmp/").createDirectories();
Block header = getSampleBlock();
header = header.sortColumns();
increment = 0;
set = std::make_shared<Set>(SizeLimits(), false);
set->setHeader(header);
}
CreatingSetsBlockInputStream::CreatingSetsBlockInputStream(
const BlockInputStreamPtr & input,
const SubqueriesForSets & subqueries_for_sets_,
const Context & context_)
: subqueries_for_sets(subqueries_for_sets_)
, context(context_)
{
const Settings & settings = context.getSettingsRef();
network_transfer_limits = SizeLimits(
settings.max_rows_to_transfer, settings.max_bytes_to_transfer, settings.transfer_overflow_mode);
for (auto & elem : subqueries_for_sets)
{
if (elem.second.source)
{
children.push_back(elem.second.source);
if (elem.second.set)
elem.second.set->setHeader(elem.second.source->getHeader());
}
}
children.push_back(input);
}
void StorageJoin::truncate(const ASTPtr &)
{
Poco::File(path).remove(true);
Poco::File(path).createDirectories();
Poco::File(path + "tmp/").createDirectories();
increment = 0;
join = std::make_shared<Join>(key_names, key_names, NameSet(), false /* use_nulls */, SizeLimits(), kind, strictness);
join->setSampleBlock(getSampleBlock().sortColumns());
}
StorageJoin::StorageJoin(
const String & path_,
const String & name_,
const Names & key_names_,
ASTTableJoin::Kind kind_, ASTTableJoin::Strictness strictness_,
const ColumnsDescription & columns_)
: StorageSetOrJoinBase{path_, name_, columns_},
key_names(key_names_), kind(kind_), strictness(strictness_)
{
for (const auto & key : key_names)
if (!getColumns().hasPhysical(key))
throw Exception{"Key column (" + key + ") does not exist in table declaration.", ErrorCodes::NO_SUCH_COLUMN_IN_TABLE};
/// NOTE StorageJoin doesn't use join_use_nulls setting.
join = std::make_shared<Join>(key_names, key_names, NameSet(), false /* use_nulls */, SizeLimits(), kind, strictness);
join->setSampleBlock(getSampleBlock().sortColumns());
restore();
}
