Mack Stump

Support nested fields

3

We have some nested fields that we want to use within `column_mapping`, such as `column_mapping 'user.id:user_id,user.name:name'`, but this code is preventing it from working: https://github.com/fluent/fluent-plugin-sql/blob/daca62a41d1a0a725c54f997d3af7bfca7bfc46f/lib/fluent/plugin/out_sql.rb#L56-L67 Specifically `record[k]`. We patched this...