Jon Sequeira

@NikiforovAll Are you planning to add tests? Do you need help with this PR?

> Install something like https://github.com/lorint/AdventureWorks-for-Postgres and test the test We currently don't automate this kind of integration test in our CI which is why for example our MSSQL tests are...

I'm happy to try the same setup and verify. Please just include instructions on how to do that in the dev guide. (I should add some as well for the...

You'll need to rebase and account for this API which was renamed. ``` Build FAILED. D:\a\_work\1\s\src\Microsoft.DotNet.Interactive.PostgreSql\PostgreSqlKernel.cs(115,16): error CS1061: 'CompositeKernel' does not contain a definition for 'AddKernelConnector' and no accessible extension...

This is looking great @NikiforovAll! I have one minor rename suggestion and otherwise it looks ready to merge.

This is a compelling idea and your mention of using a `.csproj` reminds me of #890.

This is supported today using the `# @name myVariableName` syntax. This and other syntax rules are the same as those described under the [.http files documentation](https://learn.microsoft.com/en-us/aspnet/core/test/http-files?view=aspnetcore-9.0#example-request-variable-usage). 

> The #!value --from-url is also useful, but severely limited in functionality. For example, it cannot accept headers like Authorization: or execute other requests beside GET. This feature predates the...

Polyglot Notebooks is not aware of the Jupyter extension's settings, so this setting would not work? Are you looking to set the working directory for the notebook? The working directory...

If it's possible to do so, we could read the Jupyter setting, since Polyglot Notebooks depends on the Jupyter extension. I'm not sure if that would be discoverable enough, or...