Syntax error (comma) in query expression. MS Access 2013

Question

I'm building a sql query in Access 2013. This is my query:

SELECT  
COUNT(Age) FROM Members AS [Under 12] WHERE Age <= 12,
COUNT(Age) FROM Members AS [13-18] WHERE Age BETWEEN 13 AND 18

but I keep getting this error:

Syntax error (comma) in query expression 'Age <= 12, COUNT(Age) FROM SukkotMembers AS [13-18] WHERE Age BETWEEN 13 AND 18`

The problem is with the comma at the end of line two, but I can't see why. When I run just one line it works fine. I am really new to SQL Just so you are aware.

Also I just realized that the AS [Under 12] and AS [13-18] are not working and I also have no idea why

Answer 1

First: the syntax you are using is not valid SQL as you have more than one FROM clause which is not allowed; the same applies to the where clause, which by the way operates on the whole set.

You can't just take bits and pieces of SQL and patch together to get a working query - there is a rather strict and well-defined syntax that you must adhere to.

What you want is either to use subqueries that return scalar values or to use conditional counting:

SELECT  
  COUNT(IIF(Age<=12,age,null)) AS [Under 12] 
 ,COUNT(IIF(Age BETWEEN 13 AND 18,age,null)) AS [13-18]  
FROM Members

Also, FROM Members AS [13-18] assigns an alias to the table, not a column.

Using subqueries (which I guess might have been your intent):

SELECT DISTINCT
    (SELECT COUNT(*) FROM MEMBERS WHERE AGE<=12) AS  [UNDER 12] ,
    (SELECT COUNT(*) FROM MEMBERS WHERE AGE BETWEEN 13 AND 18) AS  [13-18]
FROM MEMBERS

Answer 2

You can also sum:

SELECT  
    Sum(Abs(Age <= 12)) AS [Under 12],
    Sum(Abs(Age BETWEEN 13 AND 18)) AS [13-18]  
FROM 
    Members