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Re:Diesel: A Safe, Extensible ORM and Query Builder for Rust by Animats on Saturday February 06, 2016 @03:28PM (#11049662)
Read the Diesel build process, especially the section on "migrations".[1]

[1] http://diesel.rs/guides/getting-started/

Re:Diesel: A Safe, Extensible ORM and Query Builder for Rust by rabidferret on Saturday February 06, 2016 @05:28PM (#11050265)
This isn't true at all. You can add as many fields as you want. You'll need to recompile to use them, of course.