Question

Above is a screen cap of my schema.

The visits table has a list of personal ID numbers and ICD is a list of codes that pertain to a certain person. You can see from the junction table that there’s a many-to-many relationship between Visits and ICDTable. I’m trying to make a query that allows a person to type in two records in ICDTable and only return the Visit ID # if a person has both of them. I tried to amend this from a previous query I wrote but I can’t figure out what’s going on. The query doesn’t ‘fail’ per se in that it allows me to search for some things, but it’s obviously wrong. What am I missing? Gracias.

SELECT Visits.ID, Inf.desc, Sore.desc
FROM tblKentuckyCounties 
INNER JOIN 
(
    ICDTable AS Inf 
    INNER JOIN 
    (
        (
            (
                Visits 
                INNER JOIN ICDTable AS InfVisits 
                    ON Visits.ID=InfVisits.VisitsID
            ) 
            INNER JOIN ICDTable AS SoreVisits 
                ON Visits.ID=SoreVisits.ID
        ) 
        INNER JOIN ICDTable AS Sore 
            ON SoreVisits.ICD_IDFK=Sore.ID
    ) ON Inf.ID=Visits.ICD_IDFK
) 
    ON tblKentuckyCounties.ID=Visits.County
WHERE Inf.desc=[enter first term] 
    AND Sore.desc=[enter second term]

thanks for edit.

Ok, so I found out what I needed to do. Below this text is the working query for anyone interested in how to do this sort of thing

SELECT DISTINCT Visits.KHA_ID, Visits.totalCharges
FROM (Visits INNER JOIN (ICDTable INNER JOIN ICDVisitsJxn ON ICDTable.ICD9ID = ICDVisitsJxn.ICD_IDFK) ON Visits.ID = ICDVisitsJxn.VisitsIDFK) INNER JOIN (ICDTable AS ICDTable_1 INNER JOIN ICDVisitsJxn AS ICDVisitsJxn_1 ON ICDTable_1.ICD9ID = ICDVisitsJxn_1.ICD_IDFK) ON Visits.ID = ICDVisitsJxn_1.VisitsIDFK
WHERE (((ICDTable.Description) Like [enter term]) AND ((ICDTable_1.Description) Like [enter another term]));

Answer 1

You could divide your query into a subquery containing only ICDVisits and ICDtable (1). In a new query you then join Visits with this subquery twice (2).

(1)

SELECT ICDTable.Description, ICDVisits.VisitsIDFK
FROM ICDTable INNER JOIN ICDVisits ON ICDTable.ICD9ID = ICDVisits.ICD_IDFK;

(2)

SELECT Visits.ID
FROM query1 INNER JOIN (query2 INNER JOIN Visits ON query2.VisitsIDFK = Visits.ID) ON
query1.VisitsIDFK = Visits.ID
WHERE (((query1.Description) Like 'a') AND ((query2.Description) Like 'b'));

(Query 1 & 2 being the join of ICDVisits and ICDTable).

Forgot to mention it: You don’t have to use the ID field inside ICDVisitsJxn as a primary key, you could just make the fields VisitsIDFK and ICD_IDFK the primary key. This would avoid duplicated entries.

Query 1 & 2 (being the same obviously):

Combined Query: