// Copyright 2023 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#pragma once

#include <Core/Block.h>


namespace DB
{

/** Common part for implementation of MySQLBlockInputStream, MongoDBBlockInputStream and others.
  */
struct ExternalResultDescription
{
    enum struct ValueType
    {
        UInt8,
        UInt16,
        UInt32,
        UInt64,
        Int8,
        Int16,
        Int32,
        Int64,
        Float32,
        Float64,
        String,
        Date,
        DateTime
    };

    Block sample_block;
    std::vector<ValueType> types;
    std::vector<std::string> names;
    Columns sample_columns;

    void init(const Block & sample_block_);
};

} // namespace DB