(1)首先安装MySql数据库服务：

(2)安装navicat数据库client：

安装步骤：傻瓜安装，选择字符集的时候自己依据情况选择gbk2312,或者utf-8(一般涉及到网络传输或者跨平台，比方和java项目公用数据。会选择utf-8)

(3)安装odbc数据库连接驱动：

(4)使用otl操作mysql

(4.1)最新封装C++操作otl类库及演示样例代码下载(可直接执行)：http://pan.baidu.com/s/1i31bZUX

(4.2)以下的演示样例更加简单，因为没有封装otl，仅仅是使用了全局的otl_connect来实现的，方便入门

创建VS项目：

包括头文件：otl4.h

包括源文件：

#include

using namespace std;

#include

#define OTL_ODBC // CompileOTL 4.0/ODBC

// Thefollowing #define is required with MyODBC 5.1 and higher

#define OTL_ODBC_SELECT_STM_EXECUTE_BEFORE_DESCRIBE

#define OTL_UNICODE // CompileOTL with Unicode

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

otl_connect db; // connect object

void insert()

// insert rowsinto table

{

otl_stream o(1, //buffer size should be == 1 always on INSERT.

"insert into test_tab values(:f1,:f2)",

// SQLstatement, char[5] means 5 2-byte

// Unicodecharatcters including a null

// terminator

db // connectobject

);

unsigned short tmp[32]; // Nullterminated Unicode character array.

for(int i=1;i<=100;++i){

o<

tmp[0]=1111; //Unicode character (decimal code of 1111)

tmp[1]=2222; //Unicode character (decimal code of 2222)

tmp[2]=3333; //Unicode chracater (decimal code of 3333)

tmp[3]=4444; //Unicode chracater (decimal code of 4444)

tmp[4]=0; //Unicode null terminator

o<

// overloadedoperator<

// OTL acceptsa pointer to a Unicode character array.

//operator<

// in order toavoid ambiguity in C++ type casting.

}

}

void select()

{

otl_stream i(50, //buffer size

" select* from test_tab "

"where f1>= :f11 "

" and f1 <= :f12*2 ",

// SELECTstatement

db // connectobject

);

// create selectstream

int f1;

unsigned short f2[32];

i<<8<<8; // assigning :f11 = 8, f12 = 8

// SELECTautomatically executes when all input variables are

// assigned. Firstportion of output rows is fetched to the buffer

while(!i.eof()){// while not end-of-data

i>>f1;

i>>(unsigned char*)f2;

// overloaded operator>>(unsignedchar*) in the case of Unicode

// OTL acceptsa pointer to a Unicode chracter array.

//operator>>(unsigned short*) wasn't overloaded

// in order toavoid ambiguity in C++ type casting.

cout<

for(int j=0;f2[j]!=0;++j)

cout<

cout<

}

i<<4<<4; // assigning :f11 = 4, :f12 = 4

// SELECTautomatically executes when all input variables are

// assigned. Firstportion of output rows is fetched to the buffer

while(!i.eof()){// while not end-of-data

i>>f1>>(unsigned char*)f2;

cout<

for(int j=0;f2[j]!=0;++j)

cout<

cout<

}

}

int main()

{

otl_connect::otl_initialize(); // initialize the database API environment

try{

// connect to the database user/psw/dsn,这里的dsn是odbc创建数据源的时候设置的，

//注意dsn是odbc连接的名字。不是数据库的名字。otl是通过odbc的名字找到数据库的，

//而这个名字对于的配置里面

//已经包括了IP,端口等信息，仅仅要你提供username和password就能够訪问了

//见http://jingyan.baidu.com/article/8065f87f38b31423312498e4.html

db.rlogon("root/123456@local_connect");

otl_cursor::direct_exec

(

db,

"drop table test_tab",

otl_exception::disabled // disable OTL exceptions

); // droptable

otl_cursor::direct_exec

(

db,

"create table test_tab(f1 int, f2 varchar(11))"

); // create table

insert(); //insert records into table

select(); //select records from table

}

catch(otl_exception&p){ // intercept OTL exceptions

cerr<

cerr<

cerr<

}

db.logoff(); //disconnect from the database

getchar();

return 0;

}

输出：

f1=8, f2=1111222233334444

f1=9, f2=1111222233334444

f1=10, f2=1111222233334444

f1=11, f2=1111222233334444

f1=12, f2=1111222233334444

f1=13, f2=1111222233334444

f1=14, f2=1111222233334444

f1=15, f2=1111222233334444

f1=16, f2=1111222233334444

f1=4, f2=1111222233334444

f1=5, f2=1111222233334444

f1=6, f2=1111222233334444

f1=7, f2=1111222233334444

f1=8, f2=1111222233334444

语法总结：

连接初始化：otl_connect::otl_initialize();

连接对象：otl_connect db; // connect object

连接数据库：  db.rlogon("UID=scott;PWD=tiger;DSN=postgresql"); // connect to ODBC

连接数据库一般放在try子句中：

try{

db.rlogon("UID=scott;PWD=tiger;DSN=postgresql"); // connect to ODBC

}

catch(otl_exception& p){ // intercept OTL exceptions

cerr<

cerr<

cerr<

cerr<

}

db.logoff(); // disconnect from ODBC

数据库操作：在数据库的连接和断开之间执行，往往同一个连接内部进行多个数据库操作

db.rlogon("UID=scott;PWD=tiger;DSN=postgresql"); // connect to ODBC

otl_cursor::direct_exec

(

db,

"drop table test_tab",

otl_exception::disabled // disable OTL exceptions

); // droptable

表的创建

string sql ="create table test_tab(f1 int, f2 varchar(11))";

//create table person_tab(age int, student_name char(30))

otl_cursor::direct_exec

(

db,

sql.c_str();

); // create table

表的删除

otl_cursor::direct_exec

(

db,

"drop table test_tab",

otl_exception::disabled // disable OTL exceptions

); // droptable

插入

otl_stream o(50, // buffer size

"insert into test_tab "

"values(:f1,:f2,:f3)",

// SQL statement

db // connect object

);

o<

查询

otl_stream i(50, // buffer size

"select * from test_tab where f1>=:f11 and f1<=:f12*2",

// SELECT statement

db // connect object

);