Convert SQLITE SQL dump file to POSTGRESQL

Question

I\'ve been doing development using SQLITE database with production in POSTGRESQL. I just updated my local database with a huge amount of data and need to transfer a specifi

Answer 1

pgloader

I came across this post when searching for a way to convert an SQLite dump to PostgreSQL. Even though this post has an accepted answer (and a good one at that +1), I think adding this is important.

I started looking into the solutions here and realized that I was looking for a more automated method. I looked up the wiki docs:

https://wiki.postgresql.org/wiki/Converting_from_other_Databases_to_PostgreSQL

and discovered pgloader. Pretty cool application and it's relatively easy to use. You can convert the flat SQLite file into a usable PostgreSQL database. I installed from the *.deb and created a command file like this in a test directory:

load database  
    from 'db.sqlite3'  
    into postgresql:///testdb 
       
with include drop, create tables, create indexes, reset sequences  
         
set work_mem to '16MB', maintenance_work_mem to '512 MB';

like the docs state. I then created a testdb with createdb:

createdb testdb

I ran the pgloader command like this:

pgloader command

and then connected to the new database:

psql testdb

After some queries to check the data, it appears it worked quite well. I know if I had tried to run one of these scripts or do the stepwise conversion mentioned herein, I would have spent much more time.

To prove the concept I dumped this testdb and imported into a development environment on a production server and the data transferred over nicely.