(This article was first published on R on Locke Data Blog, and kindly contributed to R-bloggers)
If you use SQL Server (or Azure SQL DB) as your data store and you need to connect to the databasse from shinyapps.io, you’re presently stuck with FreeTDS. If you have any control over infrastructure I cannot recommend highly enough the actual ODBC Driver on Linux for ease. Alas, shinyapps.io does not let you control the infrastructure. We have to make do with with FreeTDS and it can be pretty painful to get right.
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