Create an evolution script for the play framework based on pg_dump

create_evolution.sh

# after that you need to insert # --- !Ups on top of the generated file
echo '# --- !Ups' > conf/evolutions/default/2.sql
# column inserts are needed in case of new model properties
# we keep only the insert statements, pg_dump comments confuse ebean/play
pg_dump --column-inserts \
--inserts  --data-only --exclude-table=play_evolutions \
--username popcon  -h localhost popcon \
| grep '^INSERT INTO' \
>> conf/evolutions/default/2.sql