SQL Parser essay

[sjperkins]

• Tests added / passed

  $ py.test -v -s daskms/tests

  If the pep8 tests fail, the quickest way to correct
  this is to run autopep8 and then flake8 and
  pycodestyle to fix the remaining issues.

  $ pip install -U autopep8 flake8 pycodestyle
  $ autopep8 -r -i daskms
  $ flake8 daskms
  $ pycodestyle daskms
  

• Fully documented, including HISTORY.rst for all changes
  and one of the docs/*-api.rst files for new API

  To build the docs locally:

  pip install -r requirements.readthedocs.txt
  cd docs
  READTHEDOCS=True make html
  

[sjperkins]

/cc @bennahugo

[sjperkins]

This demonstrates creating a row based mask with moz_sql_parser.

Supports SELECT ... FROM table WHERE ... expressions, but probably not more complicate than that.

[sjperkins]

It would probably be sensible to put this as a layer between the SQL dialects of the various storage backends (TAQL, Apache Arrow Predicate Pushdowns and Apache Datafusion)