Simply display zero if it's less or equals to 0.
#include <base/safeExit.h>
#include <Common/Exception.h>
#include <Common/getNumberOfPhysicalCPUCores.h>
#include <Common/tests/gtest_global_context.h>
#include <Common/typeid_cast.h>
#include <Common/config.h>
#include <Columns/ColumnString.h>
#include <Columns/ColumnsNumber.h>
#include <Core/Block.h>
#include <Core/Protocol.h>
#include <Formats/FormatFactory.h>
#include <Common/config_version.h>
#include <Common/UTF8Helpers.h>
#include <Common/TerminalSize.h>
#include <Common/clearPasswordFromCommandLine.h>
#include <Common/StringUtils/StringUtils.h>
#include <Common/filesystemHelpers.h>
#include <Common/Config/configReadClient.h>
#include <Common/NetException.h>
#include <Storages/ColumnsDescription.h>
#include <Client/ClientBaseHelpers.h>
#include <Client/TestHint.h>
#include "TestTags.h"
#include <Parsers/parseQuery.h>
#include <Parsers/ParserQuery.h>
#include <Parsers/formatAST.h>
#include <Parsers/ASTInsertQuery.h>
#include <Parsers/ASTCreateQuery.h>
#include <Parsers/ASTCreateFunctionQuery.h>
#include <Parsers/ASTDropQuery.h>