Scala projections in Slick for only one column

Question

I\'m following the Slick documentation example for autoincrementing fields and I\'m having trouble creating a mapped projection that ... well, only has one column.

Answer 1

This is a known issue with Slick; mapped projections do not work with a single column. See https://github.com/slick/slick/issues/40

Luckily, you don't need a mapped projection for your code to work. Just omit everything after and including the <>. See scala slick method I can not understand so far for a great explanation of projections. It includes the information you need to get going.