| Cause Text: |
Grouping for queries that contain distributed tables can be implemented
using either a one or two step method. If the one step method is used, the
grouping columns (GROUP BY) match the partitioning keys of the distributed
table. If the two step method is used, the grouping columns do not match the
partitioning keys of the distributed table or the query contains grouping
criteria but no grouping columns were specified. If the two step method is
used, message SQL401B will appear followed by another SQL401A message. |