// 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 namespace DB { /* numbers(limit) * - the same as SELECT number FROM system.numbers LIMIT limit. * Used for testing purposes, as a simple example of table function. */ class TableFunctionNumbers : public ITableFunction { public: static constexpr auto name = "numbers"; std::string getName() const override { return name; } private: StoragePtr executeImpl(const ASTPtr & ast_function, const Context & context) const override; }; } // namespace DB