Extract data from multiple parquet (or csv) files and output it as INSERT INTO sql statements.

Takes a YAML config file containing queries to execute against the dataset as input.

queries:
  - name: user
    sql: SELECT * FROM user WHERE lid=1
  - name: post
    sql: SELECT * FROM post WHERE curatedby_lid=1
  - name: extract exts...
    table_name: post_ext
    sql: |
      SELECT pe.* FROM post p 
      JOIN post_ext pe ON p.lid=pe.lid
      WHERE p.curatedby_lid=1

cargo install --git https://github.com/Scoopit/batch-data-extractor.git

Some part of the code (utils.rs) have been brutally imported from Boring Data Tool (bdt) as using bdt as a lib is not really possible due to some type extravagance (errors not implementing Error trait)...

Licensed under Apache License, Version 2.0 (LICENSE-APACHE or http:https://www.apache.org/licenses/LICENSE-2.0)

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.