Where is the table icon in the editor?

[Moin]

You can use markdown to create a table. See Create a table using markdown on your Discourse forum.
If you don’t want to learn the syntax, you can use an online tool like this or paste a table.

@jomaxro

Paste plain text table as Markdown table

Ever tried to copy a spreadsheet into Discourse to find that you just get plain text? No longer! We now support pasting tables from common spreadsheet programs like Excel, Numbers, and Libre Office and generating a Markdown table.