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39 lines
1.1 KiB
C++
39 lines
1.1 KiB
C++
#pragma once
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#include "config.h"
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#if USE_MYSQL
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#include <TableFunctions/ITableFunction.h>
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#include <Storages/StorageMySQL.h>
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#include <mysqlxx/Pool.h>
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namespace DB
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{
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/* mysql ('host:port', database, table, user, password) - creates a temporary StorageMySQL.
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* The structure of the table is taken from the mysql query DESCRIBE table.
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* If there is no such table, an exception is thrown.
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*/
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class TableFunctionMySQL : public ITableFunction
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{
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public:
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static constexpr auto name = "mysql";
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std::string getName() const override
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{
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return name;
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}
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private:
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StoragePtr executeImpl(const ASTPtr & ast_function, ContextPtr context, const std::string & table_name, ColumnsDescription cached_columns, bool is_insert_query) const override;
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const char * getStorageTypeName() const override { return "MySQL"; }
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ColumnsDescription getActualTableStructure(ContextPtr context, bool is_insert_query) const override;
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void parseArguments(const ASTPtr & ast_function, ContextPtr context) override;
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mutable std::optional<mysqlxx::PoolWithFailover> pool;
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std::optional<StorageMySQL::Configuration> configuration;
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};
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}
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#endif
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