way to create a table in a post?
 

I don't think you can.
You can always create it and post a prt scr.

Do your table on any which way you want to whether on MsWord or Excel, print it out, take a picture and post it here.

..well spoken

Below is an Excel table that I simply selected and copied, then pasted here. No need to print or photograph.

A B C
1 2 3
4 5 6
7 8 9

Ray, I suspect a more complex table would not give that result without extra work.
The answer to the question would be: BBcode or HTML.
I think we, as users, are not allowed to use it at OB. Some forums let users to activate these functionalities in their profile but I didn't find it in my profile options.

I'm absolutely sure you're correct.

I tried a BB Code table, using [table], [tr], [td], etc, and I only saw the code displayed, so deleted it.

I also tried HTML and the result was the same.

Below the quick message box is a grey button, Go Advanced. Pressing that yields a box with a flock of icons at the top. The three in the upper right are
Wrap [Code] tags around selected text
Wrap [HTML] tags around selected text
Wrap [PHP] tags around selected text

I'm busy with chores and don't have time to investigate further. I vaguely recall PHP usually needs the platform to have an up-to-date plugin, and HTML would not.

But, in the lower left corner of this compose page, I see the following information:
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

I'm going to go outside now and do some sawing on an overgrown mesquite.