Change the table comment after created the table is not supported now?
Like mysql : ALTER TABLE [tableName] COMMNET [comment]; 
The sql "ALTER TABLE `system`.tables UPDATE Comment='test' WHERE NAME='t1';" also not supported!!!
My version is '21.9.4.35'。
#include <Interpreters/getTableExpressions.h>
#include <Functions/IFunction.h>
#include <Processors/QueryPlan/QueryPlan.h>
#include <Processors/QueryPlan/BuildQueryPipelineSettings.h>
#include <Processors/QueryPlan/Optimizations/QueryPlanOptimizationSettings.h>
#include <Processors/QueryPlan/ReadFromPreparedSource.h>
#include <Processors/Sources/NullSource.h>
#include <Processors/Sources/RemoteSource.h>
#include <Processors/Sinks/EmptySink.h>
#include <Core/Field.h>
#include <Core/Settings.h>
#include <IO/ReadHelpers.h>
#include <IO/WriteBufferFromString.h>
#include <IO/Operators.h>
#include <IO/ConnectionTimeoutsContext.h>
#include <Poco/DirectoryIterator.h>
#include <memory>
#include <filesystem>
#include <optional>
#include <cassert>
namespace fs = std::filesystem;
namespace
{
const UInt64 FORCE_OPTIMIZE_SKIP_UNUSED_SHARDS_HAS_SHARDING_KEY = 1;
const UInt64 FORCE_OPTIMIZE_SKIP_UNUSED_SHARDS_ALWAYS           = 2;
const UInt64 DISTRIBUTED_GROUP_BY_NO_MERGE_AFTER_AGGREGATION = 2;
const UInt64 PARALLEL_DISTRIBUTED_INSERT_SELECT_ALL = 2;
}
namespace ProfileEvents
{