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void CDbTestDlg::OnButton3()
{
// TODO: Add your control notification handler code here

if(!m_ptrRecordSet->BOF)
m_ptrRecordSet->MoveFirst();
else
return;

while(!m_ptrRecordSet->adoEOF)
{
m_ptrRecordSet->Delete(adAffectCurrent);
m_ptrRecordSet->MoveNext();


}

m_ptrRecordSet->Update();
}
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m_pConnection->Execute("delete * from Êý¾Ý1",&RecordsAffected,adCmdText);

SQL code:
delete from yourtalbe

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