Feature request - Adding 'Begin or Start' & 'End or Stop' parameter on trigger when specific situation

• Whem using a syntax like
  'insert into table select * from view' which multiple records inserted at once(same to delete/update statement), wanna get the flag or parameter in trigger of the table 'table' in the sample syntax.
• After implemtation of this request, for example,
  a trigger of the 'table' will be return some flag that
  'new.massive_start = true' right before actually started the insertion.
  and and after finish of the last insertion, 'new.massive_end = true'. (of cause, each of flag will be vback to false when not the right timing)
• So the situation detail will be below.
  1. user call 'insert into table select * from view or table.'
  2. the before trigger of the table's insert, will provide
  > new.massive_start = true/new.massive_index=0/new.massive_end = false
  3. the after trigger of the table's insert, will provide
  > new.massive_start = false/new.massive_index=0/new.massive_end = false
  4. the before/after trigger of the table's insert middle of insertion task, will provide
  > new.massive_start = false/new.massive_index=n/new.massive_end = false
  5. the after trigger of the table's insert actuatlly after insertion task, will provide
  > new.massive_start = false/new.massive_index=n/new.massive_end = true

The reason why we need it is,
need preparing batch end ending batch for sepecific tasks. Which unpredictable in sequence. With this, we can do our job efficintly