Bug when using alias in sql query?

Question

I don't know if this is a problem related to the getString function of the MetaData class, or if it is something else. I'm having problems when sending a select query containing a specification for column alias to the execute function of the Statement class. Whenever the alias is more than 11 characters it crashes, saying the heap may be corrupt. When the alias is <=11 or there is no alias specified, there are no problems to get the name.
After executing a query I am looping through the vector of MetaData objects retrieved from the ResultSet and its getColumnListMetaData to get information about each column, among other things the column name. The crash occurs when it comes to the execution of getString(MetaData::ATTR_NAME). As I said, this does not happen when no alias is set, it will pass by without any errors.
I am using visual studio 2005, oracle 10g release 2 and the downloaded debug versions of occi for visual studio 2005.

Answer 1

Hi,
Is this what you are trying:
    try {
    Statement *stmt = conn->createStatement("SELECT ename AS aaaaaaaaaaaaaaa  FROM emp");
      ResultSet *rs = stmt->executeQuery ();
      vector<MetaData> md = rs->getColumnListMetaData ();
      int numCols = md.size ();
      cout<< "Number of columns :" << numCols << endl;
      string *colName = new string [numCols];
      int type = (int ) malloc (numCols);
      for (int i = 0; i < numCols; i++ ) {
        int ptype = md [ i ].getInt (MetaData::ATTR_PTYPE);
        if ( ptype == MetaData::PTYPE_COL ) {
          colName[ i ] = md[ i ].getString (MetaData::ATTR_NAME);
          cout<<"Column Name :" << colName[ i ] << endl;
      delete[] colName;
      stmt->closeResultSet (rs);
      conn->terminateStatement (stmt);
    catch (SQLException &ex) {
                cout<<ex.getMessage()<<endl;
    }The above snippet works correctly for me.
Rgds.
Amogh