Windows每秒钟10000条以上插入；Linux每秒插入300条以上。Q269752451

输出截图：

int main(int, char *[])

{

	vector<e_eledata> arr_data;

	print("begin make_data");

	make_data(arr_data);

	print("begin insert 3000 data");

	try

	{

		Otlv4_Handle otl_handler;

		otl_handler.logon("root/123456@mysql_from_centos");

		otl_handler.insert(e_eledata::insert_sql(),arr_data);

		print("insert data end ");

		arr_data.clear();

		otl_handler.select(e_eledata::select_sql(),arr_data);

		print("select top 10：");

		for (int i=0;i<arr_data.size();++i)

		{

			cout<<arr_data[i].to_string()<<endl;

		}

	}

	catch(otl_exception& ex)

	{

		cout<<"exception:\n"

			<<"msg:"<<ex.msg<<"\n"

			<<"text:"<<ex.stm_text<<"\n"

			<<"info:"<<ex.var_info<<"\n";

	}  

	return 0;

};

使用：

版本号2.0简单封装OTL

头文件Otlv4_Handle.h

#ifndef OTLV4_HANDLE_H

#define OTLV4_HANDLE_H

// =================================================================================

// ORACLE, ODBC and DB2/CLI Template Library, Version 4.0.262,

// Copyright (C) 1996-2012, Sergei Kuchin (skuchin@gmail.com)

// modified by carea @ 2014-10-29 Version 1.0

// =================================================================================

/************************************************************************/

/*                                                                      */

/*            邦定变量类型            |    C++ 程序使用的相应类型            */

/*            USED IN MySQL table   |    USED IN C++ STRUCT MEMBER TYPE */

/*            int                   |    long long                      */

/*            timestamp             |    otl_datetime                   */

/*            varchar               |    std::string                    */

/*            bigint                |    long long                      */

/*            decimal               |    double                         */

/*                                                                      */

/************************************************************************/

//数据类型应该支持的输入输出操作

//otl_stream& operator>>(otl_stream& in ,T& t)

//otl_stream& operator<<(otl_stream& out ,const T& t)

/*********************************************************************************/

/*                                                                               */

/*                            经常使用SQL语句写法                                      */

/*otl_handle.select("select f2 from test_tab",arr);                              */

/*otl_handle.insert("insert into test_tab1(f2)values(:f2<char[30]> )",arr);      */

/*                                                                               */

/*说明：数据库表中假设有属性名为：IP、PORT、INTERVAL这样的字段，赶紧改名！

！（与keyword冲突）   */

/*                                                                               */

/*********************************************************************************/

#ifdef OTLV4_HANDLE_WINDOWS

    #define OTL_ODBC_MSSQL_2008

    #define OTL_ODBC_SELECT_STM_EXECUTE_BEFORE_DESCRIBE

    #define OTL_STL//using std::string

    #define OTL_ANSI_CPP  // Turn on ANSI C++ typecasts

    #define OTL_BIGINT  long long

    #define OTL_STR_TO_BIGINT(str,n) {  n=_atoi64(str); }

    #define OTL_BIGINT_TO_STR(n,str) {  _i64toa(n,str,10); }

	#define INSERT_NUM 10000

#endif

#ifdef OTLV4_HANDLE_LINUX

    #define OTL_ODBC_UNIX

    #define  OTL_ODBC_SELECT_STM_EXECUTE_BEFORE_DESCRIBE

//#define OTL_ODBC_MYSQL

    #define OTL_STL//using std::string

    #define OTL_ANSI_CPP  // Turn on ANSI C++ typecasts

    #define OTL_BIGINT  long long

    #define OTL_STR_TO_BIGINT(str,n) {  n=atoll(str); }

    #define OTL_BIGINT_TO_STR(n,str) {  sprintf(str,"%lld", n);}

	#define INSERT_NUM 1

#endif

#include "otlv4.h"// include the OTL 4.0 header file

#include <string>

#include <algorithm>

#include <vector>

#include <iterator>

using namespace std;

#ifndef SCP_EXPORT_H

#include "SCP_Export.h"

#endif

class SCP_Export Otlv4_Handle

{

public:

    Otlv4_Handle();

    bool logon(const string& db_info);

    bool reconnect_to_db_once(void);

    ~Otlv4_Handle(void);

    template<typename T> int insert(const string& sql,const vector<T>& data);

    template<typename T> int select(const string& sql,vector<T>& data);

	int count_table_field(const string& table_name,const string& field_name);

private:

    otl_connect db; // connect object

    string db_infor_;

};

template<typename T> int Otlv4_Handle::insert(const string& sql,const vector<T>& data)

{

    db.auto_commit_off();

    otl_stream out;

    out.open(INSERT_NUM, //buffer size should be == 1 always on INSERT on Linux MySQL.

					//buffer size can be bigger than 2000 on Windows MySQL.

        sql.c_str(),

        db); // connectobject

    //submit

    for (size_t i = 0 ; i < data.size(); i++)

    {

        out<<data[i];

    }

    out.flush();

    db.commit();

    return 0;

}

template<typename T> int Otlv4_Handle::select(const string& sql,vector<T>& data)

{

    //使用邦定变量类型

    //sql = "select* from "+talbe;

    db.auto_commit_off();

    otl_stream in;

        in.open(100, //buffer size

            sql.c_str(),// SELECTstatement

            db // connectobject

            );

    // copy all rows to be fetched into the vector

    copy(otl_input_iterator<T,ptrdiff_t>(in),otl_input_iterator<T,ptrdiff_t>(),back_inserter(data));    

    return 0;

}

#endif

存储数据类定义

存储数据类头文件e_eledata.h

#ifndef E_ELEDATA_H

#define E_ELEDATA_H

#include <iostream>

#include <fstream>

#include <sstream>

#include <string>

using namespace std;

#ifndef SCP_TYPE_H

#include "scp_type.h"

#endif

#ifndef SCP_EXPORT_H

#include "SCP_Export.h"

#endif

#ifndef OTLV4_HANDLE_H

#include "Otlv4_Handle.h"

#endif

class SCP_Export e_eledata

{

public:

    friend SCP_Export otl_stream& operator<<(otl_stream& out , const e_eledata& eledata);

    friend SCP_Export otl_stream& operator>>(otl_stream& in , e_eledata& eledata);

    string to_string(void) const;

    e_eledata();

    ~e_eledata();

    e_eledata(const e_eledata& data);

    e_eledata& operator=(const e_eledata& data);

    int check_format(void);

    static string insert_sql(void);

	static string select_sql(void);

public:

    id_type id;//64位机器这里不须要使用long，假设使用long则字节太长而打印不出来

    id_type e_elemeterhead_id;

    otl_datetime dldt;

    double tae;  //总有功电量。单位：kWh。

};

#endif

批量提交

因不同的数据库以及不同的操作系统，批量提交的buffer size有所不同，见官方演示样例代码：

Windows MySQL 能够设置大于10000

Linux MySQL 临时设置成1.

配置ODBC数据源

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