Question

I want to display the most recent comment and its date from a different table. The different table is keyed to the rows in the main table. Stated another way:

A “main” table is keyed to a notes table. The notes table can have any number of entries giving detail of steps taken referring to the main tables row, but I want only the most recent comment and date to show in my query.

The main table name is main keyed to table notes. The 2 columns innotesI need areentry_timestampandactivity_notes`.

Answer 1

Something like

select
  (select activity_notes from notes n where n.mainId = m.id order by m.entry_timestamp desc LIMIT 1)
  , (select entry_timestamp from notes n where n.mainId = m.id order by m.entry_timestamp desc LIMIT 1)
from main m