ODBC连接SQL SERVER数据库

#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
using namespace std;

//char hosts[] = {"192.168.100.54"};
#define isSuc(result) ((result) == SQL_SUCCESS || (result) == SQL_SUCCESS_WITH_INFO)
#define istr(a,b) (b?0:(a) == L"te" || (a) == L"ha")
#define nm L"te"
#define nm_1 L"hj"
#define nm_2 L"tee"
int main(void)
{
	short sret; //返回代码
	HENV henv;  //环境句柄
	HDBC hdbc;  //连接句柄
	HSTMT hstmt;//sql语句执行句柄，相当于游标
	if (ISSBDevice(L"SB"))
	{
		printf("te");
	}
	else
	{
		printf("tee");
	}
	if (istr(nm,TRUE))
	{
		printf("ok");
	}
	if (istr(nm,FALSE))
	{
		printf("ok2");
	}
	if (istr(nm_1,FALSE))
	{
		printf("ok3");
	}
	//动态创建系统DSN数据源，需要包含odbcinst.h，SQL Server不需要添加用户名密码
	//在使用某个数据库的ODBC管理器之前，首先要查看是否安装了这个数据库的ODBC驱动，如果没有先安装再使用，比如DB2就没有默认安装
    //bool secess = SQLConfigDataSource(NULL,ODBC_ADD_SYS_DSN,"SQL Server","DSN=trantest\0 UID=sa\0 PWD=123456\0 SERVER=192.168.100.54\0 DATABASE=warehouse\0");
	bool sucess = SQLConfigDataSource(NULL,ODBC_ADD_SYS_DSN,"SQL Server","DSN=trantest\0 SERVER=192.168.100.54\0 DATABASE=SK\0");
	if (sucess)
		printf("DSN created sucessfully!!\n");
	else
		exit(0);
	/** 申请环境句柄**/
	sret = SQLAllocHandle(SQL_HANDLE_ENV,SQL_NULL_HANDLE,&henv);
	if(!isSuc(sret))
	{
		printf("申请环境句柄出错\n");
		SQLFreeHandle(SQL_HANDLE_ENV, henv);
	}
	/** 设置环境属性,注册ODBC版本**/
	sret = SQLSetEnvAttr(henv,SQL_ATTR_ODBC_VERSION,(void*)SQL_OV_ODBC3,0);
	if(!isSuc(sret))
	{
		printf("注册ODBC版本出错\n");
	}
	/** 申请连接句柄**/
	sret = SQLAllocHandle(SQL_HANDLE_DBC,henv,&hdbc);
	if(!isSuc(sret))
	{
		printf("申请连接句柄出错\n");
		SQLFreeHandle(SQL_HANDLE_DBC, hdbc);
	}
	/** 设置连接属性,此处设置为手动提交**/
	sret = SQLSetConnectAttr(hdbc,SQL_ATTR_AUTOCOMMIT,(void*)SQL_AUTOCOMMIT_OFF,SQL_IS_POINTER);
	if(!isSuc(sret))
		printf("设置连接属性出错\n");
	/** 连接数据源，这里的数据源使用的是动态创建的数据源**/
	sret = SQLConnect(hdbc,(SQLCHAR *)"trantest",SQL_NTS,(SQLCHAR *)"sa",SQL_NTS,(SQLCHAR *)"1234567",SQL_NTS); 
	if(!isSuc(sret))
		printf("连接出错\n");
	else 
		printf("连接成功\n");
	/** 申请执行语句句柄**/
	sret = SQLAllocHandle(SQL_HANDLE_STMT, hdbc, &hstmt);
	if(!isSuc(sret))
	{
		printf("申请执行语句句柄时出错\n");
		SQLFreeHandle(SQL_HANDLE_STMT, hstmt);
	}
	//记录更新语句影响的行数
	SQLINTEGER row_count;
	SQLExecDirect(hstmt,(SQLCHAR*)"insert into t_test values(100,'name','2011-11-30')",SQL_NTS);
	//执行sql语句后影响的行数，select查询语句返回-1
	SQLRowCount(hstmt,&row_count);
	printf("affcted count is: %d\n",row_count);
	SQLExecDirect(hstmt,(SQLCHAR*)"insert into t_test values(200,'name','2011-11-30')",SQL_NTS);
	SQLRowCount(hstmt,&row_count);
	printf("affcted count is: %d\n",row_count);
// 	SQLExecDirect(hstmt,(SQLCHAR*)"delete from t_test where id=200",SQL_NTS);
// 	SQLRowCount(hstmt,&row_count);
// 	printf("affcted count is: %d\n",row_count);
	//对更新类的sql执行后进行提交或者回滚
	sret = SQLEndTran(SQL_HANDLE_DBC,hdbc,SQL_COMMIT);
	//sret = SQLEndTran(SQL_HANDLE_DBC,hdbc,SQL_ROLLBACK);
	if (sret != SQL_SUCCESS)
		printf("服务器执行查询出错\n");
	else
		printf("服务器执行查询成功\n");
	SQLExecDirect(hstmt,(SQLCHAR*)"select * from t_test",SQL_NTS);
	int set_num = 0;
	SQLINTEGER ID;
	SQLSMALLINT col_num;
	SQLCHAR szId[50],szName[50],szTime[50];
	SQLINTEGER cbID,cbName,cbTime;	
	//得到结果集中列数
	SQLNumResultCols(hstmt,&col_num);
	printf("column number is: %d\n",col_num);
	//要遍历所有的结果集可以利用下面的方法：
	while(SQL_NO_DATA != SQLFetch(hstmt)) //移动光标，一直到集合末尾
	{
		//得到光标处某列的值
		SQLGetData(hstmt,1,SQL_C_ULONG,&ID,0,&cbID);
		SQLGetData(hstmt,2,SQL_C_CHAR,szName,50,&cbName);
		SQLGetData(hstmt,3,SQL_C_CHAR,szTime,50,&cbTime);
		//有与ODBC没有MoveNext和MoveLast API所以这样获取数据集行数
		set_num++;
		printf("%d, %s, %s\n",ID,szName,szTime);
	}
	printf("the numbers of set is: %d\n",set_num);

	SQLExecDirect(hstmt,(SQLCHAR*)"delete from t_test where id=200",SQL_NTS);
	SQLRowCount(hstmt,&row_count);
	printf("affcted count is: %d\n",row_count);

	sret = SQLEndTran(SQL_HANDLE_DBC,hdbc,SQL_COMMIT);	//查询必须要要这一句
	SQLExecDirect(hstmt,(SQLCHAR*)"delete from t_test",SQL_NTS);
	SQLRowCount(hstmt,&row_count);
	printf("affcted count is: %d\n",row_count);
	SQLExecDirect(hstmt,(SQLCHAR*)"select * from t_test",SQL_NTS);
	//要遍历所有的结果集可以利用下面的方法：
	while(SQL_NO_DATA != SQLFetch(hstmt)) //移动光标，一直到集合末尾
	{
		//得到光标处某列的值
		SQLGetData(hstmt,1,SQL_C_ULONG,&ID,0,&cbID);
		SQLGetData(hstmt,2,SQL_C_CHAR,szName,50,&cbName);
		SQLGetData(hstmt,3,SQL_C_CHAR,szTime,50,&cbTime);
		//有与ODBC没有MoveNext和MoveLast API所以这样获取数据集行数
		set_num++;
		printf("%d, %s, %s\n",ID,szName,szTime);
	}
	printf("the numbers of set is: %d\n",set_num);

	SQLExecDirect(hstmt,(SQLCHAR*)"delete from t_test",SQL_NTS);
	SQLRowCount(hstmt,&row_count);
	printf("affcted count is: %d\n",row_count);
	/** 释放各个句柄，注意顺序，不要改变**/
	SQLFreeHandle(SQL_HANDLE_STMT, hstmt);
	SQLDisconnect(hdbc);
	SQLFreeHandle(SQL_HANDLE_DBC, hdbc);
	SQLFreeHandle(SQL_HANDLE_ENV, henv);
	char ch;
	scanf("%c",&ch);
	return 0;
}