---
layout: api-deprecated
permalink: api/deprecated/1.12/
alias:
    - api/javascript/group_by/
    - api/javascript/grouped_map_reduce/
    - api/python/group_by/
    - api/python/grouped_map_reduce/
    - api/ruby/group_by/
    - api/ruby/grouped_map_reduce/
---

# Deprecated method #

The syntaxes for the group/map/reduce commands were changed as part of the 1.12 release.

Take a look at [this gist](https://gist.github.com/coffeemug/9518214) to learn how to migrate your queries.

Add page for deprecated commands
Add page for deprecated commands
