in src/main/java/org/apache/cassandra/distributed/api/QueryResults.java [120:132]
public SimpleQueryResult build()
{
if (names == null)
{
if (numColumns == UNSET)
return QueryResults.empty();
names = new String[numColumns];
for (int i = 0; i < numColumns; i++)
names[i] = "unknown";
}
return new SimpleQueryResult(names, results.toArray(new Object[0][]), warnings);
}