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(Select m_desc,m_max_rentals,membership_m_type, So to get the max count value you can use HAVING clause or Analytical Functions or Rownum like select * from You cannot use a derived table directly in where clause it will give table or view does not exist error SELECT * FROM INFO WHERE ID = (SELECT MAX(ID) FROM INFO) Based on the problem statement what the right solution is as following, which does not generate an error. What he wanted actually was the table INFO max value of ID. SELECT * FROM INFO HAVING ID = MAX(ID)Ĭolumn 'INFO.id' is invalid in the HAVING clause because it is not contained in either an aggregate function or the GROUP BY clause. He was not able to resolve this problem, even though the solution was given in the query description itself.ĭue to a lack of experience, he came up with another version of the above query based on the error message.
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The aggregate may not appear in the WHERE clause unless it is in a subquery contained in a HAVING clause or a select list, and the column being aggregated is an outer reference. When he executed the above script it gave him the following error: Problem Statement: Find all the details of INFO for the max id. Here, an aggregate may not appear in the WHERE clause unless it is in a subquery contained in a HAVING clause or a select list, and the column being aggregated is an outer reference in SQL Server.įor the demonstration, we have a table named ‘Info’ with some records. the function works as a workaround for me but may not work for others so would be nice if the MAX function was clarified. So this issue is either an inherent quirk of the max function or some kind of bug which has possibly been ignored or gone unnoticed?.
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One last note, several versions of Access Pro 2002, 2003, 2016 were tested and all produce the same results. Here is some test data which should only return 3 rows ID HID EID aType Address So if the MAX function requires a PRIMARY KEY field to work, this might explain why my queries are failing, although, that would sound like a major limitation. If the MAX sub-query is included as above, it doesn't work. The main query only works properly when the Where clauses both Home and Mail (not shown) are replaced with the function below. Here is the HOME sub-query which is part of the main Query (the main query needs to return one row per entity as EID, Home.Address, Mail.Address) Select * The only way I found to get around this issue was to replace the max sub-query with a Max Function which returns the MAX HID Value for an Entity (the function uses the sub-query statement with DAO logic within VBA) it incorrectly returns rows it shouldn't be returning. what I found by using MAX in a sub-query is it either fails to run because ACCESS incorrectly thinks it has too many matching records for the sub-query. when I attempt to use a sub-query to get the max(HID) value for a given Entity, I only want the current Address returned. each Address record has an (ID) (autonumber Primary KEY) a HOME ID (HID) matching the HOME record's (ID) (HID is NOT a Primary KEY and is NOT unique) and an Entity ID (EID). basically, I have a table that defines Addresses relating to an Entity, BUT, with a slight twist 1) once saved, no record is allowed to be deleted or changed (meaning an Entity could have multiple address Records), 2) any current Entity Address can either have HOME (1 Record) or HOME and MAIL (2 records). based on some of the comments in this thread, are we to understand that the ACCESS MAX function should only be used on/with Primary Key Fields?. I have had a similar issue within an Access Query. So my question is how do I use the MAX() function on the results of my subquery? Any thoughts or suggestions would be greatly appreciated!!!!! In the above query I tried using the MAX() in the where clause but inside that select I keep getting the error 'table not found'(meaning 'g').
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Now that I have these two values I am trying to figure out how to return the row with the maximum value of membership_count which Is where I keep getting stuck. So the inner query works perfectly and returns two results. WHERE g.membership_count = (select MAX(membership_count) from g) Group by (membership_m_type,m_desc,m_max_rentals) JOIN membership ON m_type = membership_m_type So heres my query: SELECT *įrom(Select m_desc,m_max_rentals,membership_m_type,Ĭount(membership_history.MEM_TYPE) as membership_count
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I have a slight issue with a query that I cannot figure out for the life of me, I have spent a few hours trying different approaches and I cannot get the result I expect.