Access 2010为什么提示我输入参数值

Question

Here is my sub-query from Access 2010. I'm prompting user to input year (yyyy) and Month (1-12) but for some reason user is also getting prompted for Site. Can someone tell me why? I do not want user prompted for Site.

PARAMETERS [Enter Year (yyyy)] Text ( 255 ), [Enter Month (1-12)] Short;
SELECT Sum([AB Units]) AS [Monthly AB Units], 
SELECT Count(*) FROM [New  Referrals] 
   WHERE ((Year([New Referrals].[Date of Referral]) = [Enter Year (yyyy)]) 
   AND (Month([New Referrals].[Date of Referral]) = [Enter Month (1-12)]))
   AND ([New Referrals].[First Visit] Is Null) 
   AND (([New Referrals].Site)="2")) 
 AS Waitlist FROM [DNS] 
WHERE (((Year([DNS].[Date of Entry]))=[Enter Year (yyyy)]) 
   AND ((Month([DNS].[Date of Entry]))=[Enter Month (1-12)]) 
   AND (([DNS].Site)="2")); 

Joe

Answer 1

It is most likely that the field called Site is not in either [New Referrals] or [DNS]. Check both tables and make sure that field exists in them, since there is a reference to that field in your query.

For further review, take a look at this article on the Microsoft website .

Answer 2

Like @JohnnyBones suggests it's most likely a misnamed field, but saying that you do have a syntax error that should show up in your SQL View:

You're missing a bracket that goes with the first WHERE clause

This

WHERE ((Year([New Referrals].[Date of Referral])

should be this:

WHERE (((Year([New Referrals].[Date of Referral])

A good text editor (I use Textpad) will show you matching brackets - and more importantly which ones don't have a match