Use postgres like sqlite.
$ postgresqlite test-db "create table numbers(id serial primary key, number real not null)"
create table numbers(id serial primary key, number real not null)
CREATE TABLE
$ postgresqlite test-db "insert into numbers (number) values (5)"
insert into numbers (number) values (5)
INSERT 0 1
$ postgresqlite test-db "select * from numbers"
select * from numbers
id | number
----+--------
1 | 5
(1 row)
$ du -sh test-db
40M test-db
Requires: docker
.
Add the postgresqlite script to your path.
# for example
PATH=$PATH:$HOME/projects/postgresqlite