how to do this mysql task?

I have a table called survey_results_BC_temp. It has the following fields:
https://photos.google.com/photo/AF1QipMu...fpv9sCqWeM
I am trying to update the number_of_employees column. I have tried this:
UPDATE survey_results_BC_temp set number_of_employees=COUNT(distinct user_email) WHERE item=(SELECT item FROM survey_results_BC_temp)
But it doesn't work. 
Then I tried:
https://photos.google.com/photo/AF1QipMd...6Te7ruC9An

How can I fill in the number_of_employees field?

proof that an old dog can learn new tricks

There you go with your cut copy and paste again messing up the code.

What did you Try? What did you Get? What did you Expect?

Joined CodeIgniter Community 2009.  ( Skype: insitfx )

Yeah, I couldn't get this post correct and then the forum "went away" while i was typing it. I didn't know it posted. Sorry. I was trying to show the table I am working from.

proof that an old dog can learn new tricks

If you need to copy cut and paste here is a little trick I found years ago, paste your text into an editor like Windows notepad then copy and paste it
It will remove all formatting characters.

What did you Try? What did you Get? What did you Expect?

Joined CodeIgniter Community 2009.  ( Skype: insitfx )

Here is the sql:
$sql = "CREATE TABLE survey_results_BC_temp
SELECT taxyear,user_email, item, campaign, email, qualified
FROM survey_results sr
WHERE item_type='BC' and campaign=?";
I'd like to have another column called number of employees which has the number of distinct. So I tried this:

SELECT taxyear,user_email, item, campaign, email, qualified, COUNT(distinct user_email) as number_of_employees
FROM survey_results sr
WHERE item_type='BC' and campaign=?
GROUP BY item, user_email

When I try running this interactively in MYSQL workbench I get no response.

proof that an old dog can learn new tricks