OCCI操作Oracle 数据库
用OCCI操作oracle数据库，
如何判断返回集中一个字段是日期类型的字段？


[解决办法]
利用ResultSet.getColumnListMetaData()

C/C++ code

vector <MetaData >     listOfColumns   =   rs- >getColumnListMetaData(); unsigned   int   uiColumnNum   =   listOfColumns.size(); TRACE( "字段数=%u\n ",   uiColumnNum); for   (i=0;   i <uiColumnNum;   i++) {     MetaData   columnObj   =   listOfColumns[i];     TRACE( "%d   列名：%s\n ",   i+1,   columnObj.getString   (MetaData::ATTR_NAME).c_str());     TRACE( "%d   类型：%d,   %s\n ",   i+1,   columnObj.getInt(MetaData::ATTR_DATA_TYPE),   getTypeString(columnObj.getInt(MetaData::ATTR_DATA_TYPE)).c_str());     TRACE( "%d   大小：%d\n ",   i+1,   columnObj.getInt(MetaData::ATTR_DATA_SIZE));     TRACE( "%d   精度：%d\n ",   i+1,   columnObj.getInt(MetaData::ATTR_PRECISION));     TRACE( "%d   数值范围：%d\n ",   i+1,   columnObj.getInt(MetaData::ATTR_SCALE));     if(   columnObj.getBoolean(MetaData::ATTR_IS_NULL)   )           TRACE( "%d   允许为空\n ",   i+1);     else           TRACE( "%d   不允许为空\n ",   i+1); }