Clarify how ORDER BY works with UNION ALL (#10561)
Clarify how ORDER BY works with UNION ALL (#10561)

Hopefully a bit clearer.
nishantmonu51/druid,jon-wei/druid,mghosh4/druid,gianm/druid,leventov/druid,nishantmonu51/druid,leventov/druid,druid-io/druid,monetate/druid,leventov/druid,gianm/druid,jon-wei/druid,jon-wei/druid,monetate/druid,leventov/druid,monetate/druid,druid-io/druid,mghosh4/druid,mghosh4/druid,mghosh4/druid,jon-wei/druid,druid-io/druid,nishantmonu51/druid,monetate/druid,mghosh4/druid,jon-wei/druid,gianm/druid,jon-wei/druid,mghosh4/druid,leventov/druid,nishantmonu51/druid,druid-io/druid,druid-io/druid,monetate/druid,monetate/druid,gianm/druid,nishantmonu51/druid,jon-wei/druid,gianm/druid,gianm/druid,nishantmonu51/druid,nishantmonu51/druid,mghosh4/druid,gianm/druid,monetate/druid