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");
}
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");
}