virtual void getReturnType(ServerInterface &srvInterface, 
                            const SizedColumnTypes &input_types, 
                            SizedColumnTypes &output_types) 
     {
         for (int i = 0; i < getNumCols(); ++i)
             output_types.addArg(input_types.getColumnType(i), input_types.getColumnName(i));
             
         output_types.addInt("grouping_id");
 }
Esempio n. 2
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 virtual void getIntermediateTypes(ServerInterface &srvInterface,
                                   const SizedColumnTypes &inputTypes, 
                                   SizedColumnTypes 
                                   &intermediateTypeMetaData)
 {
     int int_part = inputTypes.getColumnType(0).getNumericIntegral();
     int frac_part = inputTypes.getColumnType(0).getNumericFractional();
     intermediateTypeMetaData.addNumeric(int_part+frac_part, frac_part); // intermediate sum
     intermediateTypeMetaData.addInt(); // count of items
 }
    // Tell Vertica what our return string length will be, given the input
    // string length
    virtual void getReturnType(ServerInterface &srvInterface, 
                               const SizedColumnTypes &input_types, 
                               SizedColumnTypes &output_types)
    {
        // Error out if we're called with anything but 1 argument
        if (input_types.getColumnCount() != 1)
            vt_report_error(0, "Function only accepts 1 argument, but %zu provided", 
                            input_types.getColumnCount());

	output_types.addInt("line_num");

        // other output is a line of output from the shell command, which is
        // truncated at LINE_MAX characters
        output_types.addVarbinary(LINE_MAX, "text");
    }