Verb
ungroup (third-person singular simple present ungroups, present participle ungrouping, simple past and past participle ungrouped)
(transitive) To remove from a group; to separate.
Then there are operators to rename columns, and summarizing or aggregating operators, and if you permit relation values as attributes (RVA – relation-valued attribute ), then operators such as group and ungroup. Source: Internet
The SELECT statement in SQL serves to handle all of these except for the group and ungroup operators. Source: Internet