TST: start testing with SQL server via appveyor CI

[jorisvandenbossche]

http://www.appveyor.com/docs/services-databases

We could add tests for SQL Server to test_sql.py, as AppVeyor supports this.

[jreback]

@jorisvandenbossche

I gave up on appveyor a while ago (it works), but is extremely slow. If you want to do this ok though.

#8934 is a much better soln as binstar builds on linux,osx,windows against both 32/64 bit. just a matter of setting it up.

[jorisvandenbossche]

ok, good to know. At the moment no time for this, but I was just putting it here as an idea for if someone would be interested.

[jbrockmendel]

@jorisvandenbossche do you think this is still worth pursuing since we no longer use appveyor? I dont know how common a use case sql server is (or if we ca do it via travis/azure)

[jbrockmendel]

Closing since we no longer use appveyor. Feel free to re-open (and re-title) if you think it applies to Travis or Azure

[jorisvandenbossche]

I assume that testing on Windows with SQL Server on Azure or Github actions could still be useful, but also not something that is highly needed (nor something I would plan to work on myself)