Which Table stores Tracker datavalues for dhis2 version 2.33
programstageinstance.eventdatavalues = stores the data for a particular stage in JSON format.
trackedentityinstance = stores the tracked entity value which are referenced by above table.
Thanks @adulojusm
In that case, how would someone write an sql script to extract data for a particular program stage?
Get the program stage UUID, with this you can filter the table, but you must know how to read JSON datatype in PostgreSQL.
Cheers