sqlexec.cpp

来自「数据库开发」· C++ 代码 · 共 75 行

//SQLExec.cpp
/**************************************************************************
 *  文件名：SQLExec.cpp
 *
 *  SQL语句处理以及COM错误分析：
 *
 * PrintComError(_com_error &e)		- COM错误分析
 * StringToInt(CString s)			-字符串转换为整型	
 * ExecSQL(LPCTSTR strSql)			-执行数据库语句
 *  
 *
 *************************************************************************/
#include "stdafx.h"
#include "SQLExec.h"
#include "..\AirMonitor.h"
void WINAPI PrintComError(_com_error &e)
{
    _bstr_t bstrSource(e.Source());
    _bstr_t bstrDescription(e.Description());
    
    // Print Com errors.
    printf("Error\n");
    printf("\tCode = %08lx\n", e.Error());
    printf("\tCode meaning = %s\n", e.ErrorMessage());
    printf("\tSource = %s\n", (LPCSTR) bstrSource);
    printf("\tDescription = %s\n", (LPCSTR) bstrDescription);
}
int StringToInt(CString s)
{
	int nReturn = 0;
	char cc[10];
	wsprintf(cc, "%s", s);
	nReturn = atoi(cc);
	return nReturn;
}
void ExecSQL(LPCTSTR strSql)
{
	_RecordsetPtr pRst = NULL;
	TESTHR(pRst.CreateInstance(__uuidof(Recordset)));
	CAirMonitorApp* pApp = (CAirMonitorApp*)AfxGetApp();
	pApp->m_curConfig.ADOExec(pRst, _variant_t(strSql));
}

float StringToFloat(CString s)
{
	float fReturn = 0;
	char cc[10];
	wsprintf(cc, "%s", s);
	fReturn = (float)atof(cc);
	return fReturn;
}

COleDateTime StringToTime(CString s)
{
	int nYear, nMonth, nDay,nHour,nMinute,nSecond;
	CString ss;
	ss = s.Left(4);
	nYear = StringToInt(ss);

	ss = s.Mid(5,2);
	nMonth = StringToInt(ss);
	
	ss = s.Mid(8,2);
	nDay = StringToInt(ss);

	nHour = StringToInt("00");

	nMinute = StringToInt("00");

	nSecond = StringToInt("00");

	COleDateTime t(nYear, nMonth, nDay,nHour, nMinute,nSecond);
	return t;
}