Question

Yesterday I got help on this SQL statement and it’s working fantastically… Now I’m trying to use data from this query to update two columns on a different table.

Here is the query as I have it:

SELECT x.TechID,
       Count(*) AS cnt,
       tblEmployeeData.LName,
       tblEmployeeData.Pernr,
       tblEmployeeData.Occurrences,
       tblEmployeeData.Standing
FROM   tblEmployeeData
       INNER JOIN tblOccurrence AS x
         ON tblEmployeeData.TechID = x.TechID
WHERE  ( ( ( x.OccurrenceDate ) BETWEEN Dateadd("m", -6, Date()) AND Date() )
         AND ( ( EXISTS (SELECT *
                         FROM   tblOccurrence AS y
                         WHERE  y.TechID = x.TechID
                                AND Dateadd ("d", -1, x.[OccurrenceDate]) = y.[OccurrenceDate]) ) = False ) )
GROUP  BY x.TechID,
          tblEmployeeData.LName,
          tblEmployeeData.Pernr;

What I want to do is take the results and update the tblEmployeeData two columns. One column (tblEmployeeData.Occorrences) will be the value represented by ‘cnt’ … and then the tough part … the column tblEmployeeData.Standing will be updated using the value from ‘cnt’ as follows:

0-3 = "Good"
4-5 = "Verbal Warning"
6-7 = "Written Warning"
8 = "Final Written Warning"
9+ = "Termination" 

It’s already a large SQL statement and this is going way above my head!

Answer 1

You can wrap a query in another query:

SELECT TechID, Rank FROM Rank,
(SELECT x.TechID, Count(*) AS cnt, tblEmployeeData.LName, 
    tblEmployeeData.Pernr, tblEmployeeData.Occurrences, tblEmployeeData.Standing
FROM tblEmployeeData
INNER JOIN tblOccurrence AS x ON tblEmployeeData.TechID = x.TechID
WHERE (((x.OccurrenceDate) Between DateAdd("m",-6,Date()) And Date())
  AND ((Exists     
    (SELECT * FROM tblOccurrence AS y  WHERE y.TechID = x.TechID AND DATEADD 
    ("d", -1, x.[OccurrenceDate]) = y.[OccurrenceDate]))=False))
GROUP BY x.TechID, tblEmployeeData.LName, tblEmployeeData.Pernr) a
WHERE a.Cnt BETWEEN Rank.Low And rank.High

The idea is that you use the query with a Rank table, like so:

Low High    Rank
0   3       Good
4   5       Verbal Warning
6   7       Written Warning
8   8       Final Written Warning
9   99      Termination

Edit re comments

This runs for me in a rough mock-up

SELECT a.TechID, tblRank.Rank FROM tblRank, (SELECT x.TechID, Count(*) AS cnt, tblEmployeeData.LName, 
    tblEmployeeData.Pernr, tblEmployeeData.Occurrences, tblEmployeeData.Standing
FROM tblEmployeeData
INNER JOIN tblOccurrence AS x ON tblEmployeeData.TechID = x.TechID
WHERE (((x.OccurrenceDate) Between DateAdd("m",-6,Date()) And Date()) AND ((Exists     
    (SELECT * FROM tblOccurrence AS y  WHERE y.TechID = x.TechID AND DATEADD 
    ("d", -1, x.[OccurrenceDate]) = y.[OccurrenceDate]))=False))
GROUP BY x.TechID, tblEmployeeData.LName, tblEmployeeData.Pernr, tblEmployeeData.Occurrences, tblEmployeeData.Standing) a
WHERE a.Cnt BETWEEN tblRank.Low And tblrank.High