I am using SQL server 2005, querying with Web Developer 2010, and the min function appears to be returning more than one value (for each ID returned, see below). Ideally I would like it to just return the one for each ID.
SELECT Production.WorksOrderOperations.WorksOrderNumber,
MIN(Production.WorksOrderOperations.OperationNumber) AS Expr1,
Production.Resources.ResourceCode,
Production.Resources.ResourceDescription,
Production.WorksOrderExcel_ExcelExport_View.PartNumber,
Production.WorksOrderOperations.PlannedQuantity,
Production.WorksOrderOperations.PlannedSetTime,
Production.WorksOrderOperations.PlannedRunTime
FROM Production.WorksOrderOperations
INNER JOIN Production.Resources
ON Production.WorksOrderOperations.ResourceID = Production.Resources.ResourceID
INNER JOIN Production.WorksOrderExcel_ExcelExport_View
ON Production.WorksOrderOperations.WorksOrderNumber = Production.WorksOrderExcel_ExcelExport_View.WorksOrderNumber
WHERE Production.WorksOrderOperations.WorksOrderNumber IN
( SELECT WorksOrderNumber
FROM Production.WorksOrderExcel_ExcelExport_View AS WorksOrderExcel_ExcelExport_View_1
WHERE (WorksOrderSuffixStatus = 'Proposed'))
AND Production.Resources.ResourceCode IN ('1303', '1604')
GROUP BY Production.WorksOrderOperations.WorksOrderNumber,
Production.Resources.ResourceCode,
Production.Resources.ResourceDescription,
Production.WorksOrderExcel_ExcelExport_View.PartNumber,
Production.WorksOrderOperations.PlannedQuantity,
Production.WorksOrderOperations.PlannedSetTime,
Production.WorksOrderOperations.PlannedRunTime
If you can get your head around it, I am selecting certain columns from multiple tables where the WorksOrderNumber is also contained within a subquery, and numerous other conditions.
Result set looks a little like this, have blurred out irrelevant data.
http://i.stack.imgur.com/5UFIp.png (Wouldn't let me embed image).
The highlighted rows are NOT supposed to be there, I cannot explicitly filter them out, as this result set will be updated daily and it is likely to happen with a different record.
I have tried casting and converting the OperationNumber to numerous other data types, varchar type returns '100' instead of the '30'. Also tried searching search engines, no one seems to have the same problem.
I did not structure the tables (they're horribly normalised), and it is not possible to restructure them.
Any ideas appreciated, many thanks.
The MIN function returns the minimum within the group.
If you want the minimum for each ID you need to get group on just ID.
I assume that by "ID" you are referring to Production.WorksOrderOperations.WorksOrderNumber.
You can add this as a "table" in your SQL:
(SELECT Production.WorksOrderOperations.WorksOrderNumber,
MIN(Production.WorksOrderOperations.OperationNumber)
FROM Production.WorksOrderOperations
GROUP BY Production.WorksOrderOperations.WorksOrderNumber)
Related
I want to group by two columns, however MS Access won't let me do it.
Here is the code I wrote:
SELECT
tbl_Produktion.Datum, tbl_Produktion.Schichtleiter,
tbl_Produktion.ProduktionsID, tbl_Produktion.Linie,
tbl_Produktion.Schicht, tbl_Produktion.Anzahl_Schichten_P,
tbl_Produktion.Schichtteam, tbl_Produktion.Von, tbl_Produktion.Bis,
tbl_Produktion.Pause, tbl_Produktion.Kunde, tbl_Produktion.TeileNr,
tbl_Produktion.FormNr, tbl_Produktion.LabyNr,
SUM(tbl_Produktion.Stueckzahl_Prod),
tbl_Produktion.Stueckzahl_Ausschuss, tbl_Produktion.Ausschussgrund,
tbl_Produktion.Kommentar, tbl_Produktion.StvSchichtleiter,
tbl_Produktion.Von2, tbl_Produktion.Bis2, tbl_Produktion.Pause2,
tbl_Produktion.Arbeiter3, tbl_Produktion.Von3, tbl_Produktion.Bis3,
tbl_Produktion.Pause3, tbl_Produktion.Arbeiter4,
tbl_Produktion.Von4, tbl_Produktion.Bis4, tbl_Produktion.Pause4,
tbl_Produktion.Leiharbeiter5, tbl_Produktion.Von5,
tbl_Produktion.Bis5, tbl_Produktion.Pause5,
tbl_Produktion.Leiharbeiter6, tbl_Produktion.Von6,
tbl_Produktion.Bis6, tbl_Produktion.Pause6, tbl_Produktion.Muster
FROM
tbl_Personal
INNER JOIN
tbl_Produktion ON tbl_Personal.PersID = tbl_Produktion.Schichtleiter
GROUP BY
tbl_Produktion.Datum, tbl_Produktion.Schichtleiter;
It works when I group it by all the columns, but not like this.
The error message say that the rest of the columns aren't part of the aggregation-function (translated from german to english as best as I could).
PS.: I also need the sum of "tbl_Produktion.Stueckzahl_Prod" therefore I tried using the SUM function (couldn't try it yet).
Have you tried something along these lines?
SELECT
tbl_Produktion.Datum, tbl_Produktion.Schichtleiter,
MAX(tbl_Produktion.ProduktionsID), MAX(tbl_Produktion.Linie),
MAX(tbl_Produktion.Schicht), MAX(tbl_Produktion.Anzahl_Schichten_P),
MAX(tbl_Produktion.Schichtteam), MAX(tbl_Produktion.Von), MAX(tbl_Produktion.Bis),
SUM(tbl_Produktion.Stueckzahl_Prod)
FROM
tbl_Personal
INNER JOIN
tbl_Produktion ON tbl_Personal.PersID = tbl_Produktion.Schichtleiter
GROUP BY
tbl_Produktion.Datum, tbl_Produktion.Schichtleiter;
I have used the MAX function for all the data except the two items you specify in the GROUP BY and the one where you desire the SUM. I took the liberty of leaving out mush of your data just to get started.
Using the MAX function turns out to be a convenient workaround when the data item is known to be unique within each group. We cannot know your data or your itent, so we cannot tell you whether MAX will yield the results you need.
If you use an aggregation function in the select clause, you must group by every column that you're selecting that's not an aggregation. If you don't want to do that for some reason (perhaps it changes the output of the aggregation in way that you don't intend) you either must think of an aggregate to use (pick a value. Average? Max? Min?) or just do two selects, one for the aggregate, and one for the non-aggregates. But, then, you have to decide how to get the non-aggregated fields that make sense for the aggregate (or show them all in a table, I suppose?)
i am trying to update a colleague's MS Access application (with vb-code). I am rather experienced in writing SQL queries but i am not able to solve the following problem.
The query i am looking to fix uses a pass-through-query's result and a local MS Access table and joins them togehter in the where-clause (i tried using the normal way with ON but it seems this doesn't work when there is a pass through query involved). I have little experience with joining tables in the where-clause but is there such a thing that i cant use certain columns (of both tables) in the where-clause when joining tables in the where-clause? -> When i use a filter criteria such as columnA <> 'somerandomtext' (which is always satisfied, just to point out the problem) the query result is empty. When i delete the latter criteria in the where clause, the query returns results (although too many because i cant filter them accordingly).
Furthermore: I checked the pass-through-query, the results are correct. I checked the MS-Access table, the data in the table is correct. Therefore, i think i might be doing something wrong in the query where i join the two mentioned above.
THIS QUERY WORKS AS INTENDED AND RETURNS RESULTS:
SELECT t.tr_id, t.ser_num, t.contrgnt_id, t.pos_ekey, t.sernum AS cmdty, format(t.vol,""##,###,###.00"") AS volume, t.unit_def, t.value_date,
format(t.coup,""##,###,###.00"") AS fixprice,
format(s.calcvarprice,""##,###,###.00"") AS marketprice,
format(s.calcamount,""##,###,###.00"") AS payamount,
format(s.settlevarprice, ""##,###,##0.00"") as settleprice,
format(s.settleamount, ""##,###,##0.00"") as settleamount, s.sync
FROM pms_trans AS t, settledata AS s
WHERE t.tr_id=s.tr_id And t.is_booked='N' And t.value_date>='01.01.2021' And t.value_date<='01.04.2021'
THIS QUERY SOMEHOW RETURNS 0 RESULTS:
SELECT t.tr_id, t.ser_num, t.contrgnt_id, t.pos_ekey, t.sernum AS cmdty, format(t.vol,""##,###,###.00"") AS volume, t.unit_def, t.value_date,
format(t.coup,""##,###,###.00"") AS fixprice,
format(s.calcvarprice,""##,###,###.00"") AS marketprice,
format(s.calcamount,""##,###,###.00"") AS payamount,
format(s.settlevarprice, ""##,###,##0.00"") as settleprice,
format(s.settleamount, ""##,###,##0.00"") as settleamount, s.sync
FROM pms_trans AS t, settledata AS s
WHERE t.tr_id=s.tr_id And t.is_booked='N' And t.pos_ekey <> 'BGGS' And t.value_date>='01.01.2021' And t.value_date<='01.04.2021'
As mentioned before, i suspect that there are some limitations when joining via where-clause (although i didnt find sufficient information online).
Best Regards and thank you in advance,
Peter
First, apply the correct syntax for the date expressions:
WHERE t.tr_id=s.tr_id And t.is_booked='N' And t.pos_ekey <> 'BGGS' And t.value_date >= #2021-01-01# And t.value_date <= #2021-04-01#
Next, double-check the values for pos_ekey. For example, try to apply the filter, <> 'BGGS', directly on the field in table view.
Background
I am building an Access 2010 database that has a table [ControllerAdjustments] that keeps track of all adjustments made to controllers with an [AdjustmentID] autonumber field, a [ControllerID] field, an [AdjustmentDate] field, [Setpoint] field, and a [Power] field. The [Power] field represents the power level when the adjustment was made. Ultimately I need two queries to return two sets of results, one query should return the current status of all controllers (basically the most recent adjustment made on each controller) and the other should return the most recent adjustment made on each controller where power level is 100%. I plan to use each of these queries to feed a report. Note: field names changed slightly for convenience when typing, full names given in the code blocks...
Method
I focused on the Current Query first, and figured I would just copy it and make necessary changes to create a 100% Query. I started with a totals query on the [ControllerAdjustments] table, that had [ControllerID] as a Group By field and [AdjustmentDate] as a field that returned the Max value. This query returns exactly the number of records I expected, and after reviewing the sample bogus data I put in the table to check it, it seems to return exactly the records I need. I then created a Select Query that returned all the fields I want in my Current Report, namely the [ControllerAdjustments] table and the related records in upstream related tables. I then set the criteria for the [ControllerID] field in my Select Query to equal [Total_CurrentContAdjs]![ControllerID] and the [AdjustmentDate] in the Select Query to [Total_CurrentContAdjs]![MaxOfAdjustmentDate]. Running this query returns exactly what I want. The SQL for this query is below:
SELECT List_Units.UnitID, List_EDTanks.TankNameShort, List_Controllers.ControllerType, ControllerAdjustments.AdjustmentDate, ControllerAdjustments.ControllerSetpoint, ControllerAdjustments.RxPower
FROM Total_ContAdjsCurrent, ((List_Units INNER JOIN List_EDTanks ON List_Units.UnitID = List_EDTanks.UnitID) INNER JOIN List_Controllers ON List_EDTanks.EDTankID = List_Controllers.EDTankID) INNER JOIN ControllerAdjustments ON List_Controllers.ControllerID = ControllerAdjustments.ControllerID
WHERE (((ControllerAdjustments.AdjustmentDate)=[Total_ContAdjsCurrent]![MaxOfAdjustmentDate]) AND ((ControllerAdjustments.ControllerID)=[Total_ContAdjsCurrent]![ControllerID]))
ORDER BY List_Units.Unit, List_EDTanks.TankSortOrder, List_Controllers.ControllerType DESC;
I then copied the Totals query and added a column for Power, selected Where, unchecked show, and put in 100 for criteria. This works as expected. I then copied my select query, and changed the criteria fields to direct to my new 100% Totals query. This is where my problems begin.
Problem
The second 100% Query does not seem to like the criteria, as it initially throws out the familiar parameter window. This is the SQL Statement for the second query, virtually the same except for referring to the 100% Totals query:
SELECT List_Units.UnitID, List_EDTanks.TankNameShort, List_Controllers.ControllerType, ControllerAdjustments.AdjustmentDate, ControllerAdjustments.ControllerSetpoint, ControllerAdjustments.RxPower
FROM Total_ContAdjsCurrent, Total_ContAdjsStdyState, ((List_Units INNER JOIN List_EDTanks ON List_Units.UnitID = List_EDTanks.UnitID) INNER JOIN List_Controllers ON List_EDTanks.EDTankID = List_Controllers.EDTankID) INNER JOIN ControllerAdjustments ON List_Controllers.ControllerID = ControllerAdjustments.ControllerID
WHERE (((ControllerAdjustments.AdjustmentDate)=[Total_ContAdjsStdyState]![MaxOfAdjustmentDate]) AND ((ControllerAdjustments.ControllerID)=[Total_ContAdjsStdyState]![ControllerID]))
ORDER BY List_Units.Unit, List_EDTanks.TankSortOrder, List_Controllers.ControllerType DESC;
Initially, Access did not add my Totals query into the show table box in design view, because its results were not directly used in the Select Query. So, I added the Totals query to the top, and that allowed my query to run without asking for parameters, but now it returns the number of results I was expecting squared. Basically if I am expecting 3 records: 1, 2, and 3, it is giving me: 1, 1, 1, 2, 2, 2, 3, 3, and 3. For the life of me I cannot figure out why it is doing this, especially because the exact same setup for my Current Query returns exactly what is expected... I thought maybe the where clause in my totals query had something to do with it, so I created a Select Query for the [ControllerAdjustments] table that returned all records with 100 for power. I then used this query for my totals query instead of the totals query itself, but this did not do anything different. I am at a loss, and not sure what else I can do to get the results I want. Any suggestions welcome, thank you!
I solved this by simply starting over from scratch and rebuilding my 100% query. Reviewing the SQL statements, they look identical, however for some reason my query now returns the right number of records. I have no idea why this worked, and am still curious what went wrong in the first place if anyone with time available cares to dig into it, but the original problem statement has been corrected--even if I have no idea how I did it haha...
I am writing reports using Report Builder 3, and I need some help with an sql query to get unique values.
Using the following sample data:
I need to be able to get one single value for feeBudRec returned for each feeRef. The value of each feeBudRec is always the same for each individual feeRef (eg for every data row for feeRef LR01 will have a feeBudRec of 1177).
The reason why I need to get a single feeBudRec value for each feeRef is that I need to be able to total the feeBudRec value for each feeRef in a feePin (eg for feePin LEE, I need to total the feeBudRec values for LR01 and PS01, which should be 1177 + 1957 to get a total of 3134; but if I don't have unique values for feeBudRec, it will add the values for each row, which would bring back a total of 11756 for the 8 LEE rows).
My experience with writing SQL queries is very limited, but from searching the internet, it looks like I'll need to put in a subquery into my SQL query in order to get a single unique feeBudRec figure for each feeRef, and that a subquery that gets a minimum feeBudRec value for each feeRef should work for me.
Based on examples I've found, I think the following subquery should work:
SELECT a.feeRef, a.feeBudRec
FROM (
SELECT uvw_EarnerInfo.feeRef, Min(uvw_EarnerInfo.feeBudRec) as AvailableTime
FROM uvw_EarnerInfo
GROUP BY
uvw_EarnerInfo.feeRef
) as x INNER JOIN uvw_EarnerInfo as a ON a.feeRef = x.feeRef AND a.feeBudRec = x.AvailableTime;
The problem is that I have no idea how to insert that subquery into the query I'm using to produce the report (as follows):
SELECT
uvw_EarnerInfo.feeRef
,uvw_EarnerInfo.PersonName
,uvw_EarnerInfo.PersonSurname
,uvw_EarnerInfo.feePin
,uvw_RB_TimeLedger.TimeDate
,uvw_RB_TimeLedger.matRef
,uvw_RB_TimeLedger.TimeTypeCode
,uvw_RB_TimeLedger.TimeCharge
,uvw_RB_TimeLedger.TimeElapsed
,uvw_WoffTimeByTime.WoffMins
,uvw_WoffTimeByTime.WoffCharge
,uvw_EarnerInfo.feeBudRec
,uvw_EarnerInfo.personOccupation
FROM
uvw_RB_TimeLedger
LEFT OUTER JOIN uvw_WoffTimeByTime
ON uvw_RB_TimeLedger.TimeId = uvw_WoffTimeByTime.TimeId
RIGHT OUTER JOIN uvw_EarnerInfo
ON uvw_EarnerInfo.feeRef = uvw_RB_TimeLedger.feeRef
WHERE
uvw_RB_TimeLedger.TimeDate >= #TimeDate
AND uvw_RB_TimeLedger.TimeDate <= #TimeDate2
If that subquery will get the correct results, can anyone please help me with inserting it into my report query. Otherwise, can anyone let me know what I will need to do to get a unique feeBudRec value for each feeRef?
Depends on the exact schema, but assuming the uvw_EarnerInfo lists the Pin, Ref, and Rec without duplicates, try adding an extra column (after personOccupation) on the end of your query such as :
feeBudRecSum = (Select SUM(FeeBudRec) From uvw_EarnerInfo x
where x.feePin = uvw_EarnerInfo.feePin
Group By x.FeePin)
Note that you would not Sum these values in your report. This column should have the total you are looking for.
The key to Report Builder is to get your query correct from the offset and let the wizard then structure your report for you. It takes all the hard work out of structuring your report manually.
I haven't used Report Builder for a while now but in the query builder of the report displaying the graphical representation of your query you should be able to drag and drop columns in and out of the query set. Dragging a column upwards and out of the box (showing your columns) would have the effect of causing your report to break on this column.
If you restructure this way you will probably have to run the report generator again to regenerate the report and restructure it.
Once you are happy with the structure you can then begin to add the summary columns.
I'm having trouble with Microsoft Access 2003, it's complaining about this statement:
select cardnr
from change
where year(date)<2009
group by cardnr
having max(time+date) = (time+date) and cardto='VIP'
What I want to do is, for every distinct cardnr in the table change, to find the row with the latest (time+date) that is before year 2009, and then just select the rows with cardto='VIP'.
This validator says it's OK, Access says it's not OK.
This is the message I get: "you tried to execute a query that does not include the specified expression 'max(time+date)=time+date and cardto='VIP' and cardnr=' as part of an aggregate function."
Could someone please explain what I'm doing wrong and the right way to do it? Thanks
Note: The field and table names are translated and do not collide with any reserved words, I have no trouble with the names.
Try to think of it like this - HAVING is applied after the aggregation is done.
Therefore it can not compare to unaggregated expressions (neither for time+date, nor for cardto).
However, to get the last (principle is the same for getting rows related to other aggregated functions as weel) time and date you can do something like:
SELECT cardnr
FROM change main
WHERE time+date IN (SELECT MAX(time+date)
FROM change sub
WHERE sub.cardnr = main.cardnr AND
year(date)<2009
AND cardto='VIP')
(assuming that date part on your time field is the same for all the records; having two fields for date/time is not in your best interest and also using reserved words for field names can backfire in certain cases)
It works because the subquery is filtered only on the records that you are interested in from the outer query.
Applying the same year(date)<200 and cardto='VIP' to the outer query can improve performance further.