PYODBC MSSQL HOOK WORKS with Azure SQL DB

[gautamsumeet]

When there was a large insert to MSSQL Azure Database, the insert always timedout, but when tested with PYODBC hook it worked without any problem. thats why i created this hook so that it would be helpful to people who has problems like me.

Make sure you have checked all steps below.

Jira

• My PR addresses the following Airflow Jira issues and references them in the PR title. For example, "[AIRFLOW-XXX] My Airflow PR"
  • https://issues.apache.org/jira/browse/AIRFLOW-XXX
  • In case you are fixing a typo in the documentation you can prepend your commit with [AIRFLOW-XXX], code changes always need a Jira issue.

Description

• Here are some details about my PR, including screenshots of any UI changes:

Tests

• My PR adds the following unit tests OR does not need testing for this extremely good reason:

Commits

• My commits all reference Jira issues in their subject lines, and I have squashed multiple commits if they address the same issue. In addition, my commits follow the guidelines from "How to write a good git commit message":
  1. Subject is separated from body by a blank line
  2. Subject is limited to 50 characters (not including Jira issue reference)
  3. Subject does not end with a period
  4. Subject uses the imperative mood ("add", not "adding")
  5. Body wraps at 72 characters
  6. Body explains "what" and "why", not "how"

Documentation

• In case of new functionality, my PR adds documentation that describes how to use it.
  • When adding new operators/hooks/sensors, the autoclass documentation generation needs to be added.

Code Quality

• Passes git diff upstream/master -u -- "*.py" | flake8 --diff

[r39132]

@gautamsumeet please add tests. Also, you must follow commit guidelines (e.g. create a Jira, prepend [AIRFLOW-XXXX] in your commit to tie the commit to the JIRA, do the same with your PR, etc...)

@bolkedebruin @Fokko @ashb @kaxil How do we decide whether a hook belongs here or under contrib/hooks?

[r39132]

@gautamsumeet Please reopen when meeting contribution guidelines.

[feng-tao]

I think the code lack testing, and side qq: do we want to have more hooks / operators under contrib folder BTW? How do we know whether it works or not or how well does it get maintained?

[richardkippers]

This would be helpful for me since Azure SQL is performing slow when inserting large amounts of data.