passing a global variable to query

[wjfraser]

Hello,

In Access 2000, I am trying to pass the value in a global variable to a query. I know this can't be done explicitly, but I've used a small function called get_global that returns the value of the variable. When I do this:

msgBox (get_global("KeyWordsSelected")

I get a message box with exactly the value I want (I am just doing this for debugging purposes; it is not a crucial element of the application). In this example, say it returns

'Air Quality'

When I take this value (that's in the message box) and copy it into my query, it works perfectly. For example:

WHERE (((tblSubProjectKeyWords.ProjectKeyWords)='Air Quality'));

However, when I use

WHERE (((tblSubProjectKeyWords.ProjectKeyWords)=get_global("KeyWordsSelected")));

I get nothing returned.

I am trying to cobble this together with little training in SQL or Access, so I would appreciate any advice.

Additional information:
--get_global returns a string
--tblSubProjectKeyWords.ProjectKeyWords is a text field
--I have also tried storing the value I want in a text box, with the same result - a msgBox shows the correct value, but it does not resolve correctly within the WHERE statement.

Thanks!
Whitney

 

[VicRauch]

I just tested what you have and it worked for me.

So, when that happens to me, I create a VERY simple query, and I would put this function into the "Field" row of the Query grid. Then, when the query is run, you will see the SQL is looking at when this function is placed in the Where clause. That should help you find the problem. Your code look correct.
HTH,

 

[wjfraser]

Thanks Vic,
I will try your suggestion, because I am very curious about why it doesn't work. However, I got it to work by building the query definition in the VB behind the button calling the query. For some reason that works when the other way didn't, even though in theory it should build out to exactly the same thing.

Thanks again,
Whitney