code: public boolean isCurrency(int column) throws SQLException {
  
          checkColumn(column);
  
          Type type = resultMetaData.columnTypes[--column];
  
          return (type.typeCode == Types.SQL_DECIMAL
                  || type.typeCode == Types.SQL_NUMERIC) && type.scale > 0;
      }
docs: <!-- start generic documentation -->
  Indicates whether the designated column is a cash value.
  <!-- end generic documentation -->
  
  <!-- start Release-specific documentation -->
  <div class="ReleaseSpecificDocumentation">
  <h3>HSQLDB-Specific Information:</h3> <p>
  
  HSQLDB 1.9.0 fully supports this feature and returns true for
  NUMERIC and DECIMAL columns. <p>
  
  </div>
  <!-- end release-specific documentation -->
  
  @param column the first column is 1, the second is 2, ...
  @return <code>true</code> if so; <code>false</code> otherwise
  @exception SQLException if a database access error occurs