How to create a subtable in an MD table in Angular Material 2?

Question

I need to create a subtable (table or md-table, see picture) c md-table. I am using Angular 4.2.4 and Angular Material 2.0.0-beta.8. I could only put my table in a cell, but not in a row. I somehow played with him here (the example is based on an official example).

How can i solve this?

Answer 1

Regarding the closed issue on GitHub, this is impossible now and does not plan to change it in the future.