I have created a query in MS Access to simulate a FULL OUTER JOIN and combine the results that looks something like the following:
SELECT NZ(estimates.employee_id, actuals.employee_id) AS employee_id
, NZ(estimates.a_date, actuals.a_date) AS a_date
, estimates.estimated_hours
, actuals.actual_hours
FROM (SELECT *
FROM estimates
LEFT JOIN actuals ON estimates.employee_id = actuals.employee_id
AND estimates.a_date = actuals.a_date
UNION ALL
SELECT *
FROM estimates
RIGHT JOIN actuals ON estimates.employee_id = actuals.employee_id
AND estimates.a_date = actuals.a_date
WHERE estimates.employee_id IS NULL
OR estimates.a_date IS NULL) AS qFullJoinEstimatesActuals
I have saved this query as an object (let's call it qEstimatesAndActuals). My objective is to LEFT JOIN qEstimatesAndActuals with another table. Something like the following:
SELECT *
FROM qJoinedTable
LEFT JOIN (SELECT *
FROM labor_rates) AS rates
ON qJoinedTable.employee_id = rates.employee_id
AND qJoinedTable.a_date BETWEEN rates.begin_date AND rates.end_date
MS Access accepts the syntax and runs the query, but it omits results that are clearly within the result set. Wondering if the date format was somehow lost, I placed a FORMAT around the begin_date and end_date to force them to be interpreted as Short Dates. Oddly, this produced a different result set, but it still omitted result that it shouldn't have.
I am wondering if the queries are performed in such a way that you can't LEFT JOIN the result set of a UNION ALL. Does anyone have any thoughts/ideas on this? Is there a better way of accomplishing the end goal?
I would try breaking each part of the query into its own access query object, e.g.
SELECT *
FROM estimates
LEFT JOIN actuals ON estimates.employee_id = actuals.employee_id
AND estimates.a_date = actuals.a_date
Would be qryOne
SELECT *
FROM estimates
RIGHT JOIN actuals ON estimates.employee_id = actuals.employee_id
AND estimates.a_date = actuals.a_date
WHERE estimates.employee_id IS NULL
OR estimates.a_date IS NULL
Would be qryTwo
SELECT * FROM qryOne
UNION ALL
SELECT * FROM qryTwo
Would be qryFullJoinEstimatesActuals, and finally
SELECT NZ(estimates.employee_id, actuals.employee_id) AS employee_id
, NZ(estimates.a_date, actuals.a_date) AS a_date
, estimates.estimated_hours
, actuals.actual_hours
FROM qryFullJoinEstimatesActuals
I've found that constructs that don't work in complex Access SQL statements often do work properly if they are broken down into individual query objects and reassembled step-by-step. Additionally, you can test each part of the query individually. This will help you find a workaround if one proves to be necessary.
You can find exactly how to do this here.
You're missing an INNER JOIN.... UNION ALL step.
Consistent with the odd behavior surrounding the dates, this issue turned out to be related to the use of NZ to select a date from qFullJoinEstimatesActuals. The use of NZ appears to make the data type ambiguous. As such, the following line from the example in my post caused the error:
, NZ(estimates.a_date, actuals.a_date) AS a_date
The ambiguous data type of a_date caused the BETWEEN operator to produce erroneous results when comparing a_date to rates.begin_date and rates.end_date in the LEFT JOIN. The issue was resolved by type casting the result of the NZ function, as follows:
, CDate(NZ(estimates.a_date, actuals.a_date)) AS a_date
Related
I have a table that is for PaymentRequest (PR), each PR table has two forms of pay, a WorkProgress, and a AdvanceByWarranty, the relation is like this:
I Need to create a report to get all the payment made in that (PR), and some other fields between them
The sql that I was using to join PaymentRequest with WorkProgress is this, and it works, it returns the WorkProgress of that payment
To get the Advances by warranty I use this, it also works, returns 2 Advances, as it should be
But, when I mix both, it doesnt return 3 rows, as it should be, it returns two. The result is this
I was expecting something like this (With shorter names)
How can i get the expected query?
Edit:
The sql to get the expected query is this
select
pr.ProjectId, pr.NumberPaymentState,
wp.ToCollectAmmount as WPAmmount, wp.ToCollectPercent as WPPercent,
null as AWAmmount, null as AWPercent
from PaymentRequests pr
left join WorkProgresses wp on (wp.ProjectId = pr.ProjectId and wp.NumberPaymentState = pr.NumberPaymentState)
union all
select
pr.ProjectId, pr.NumberPaymentState,
null as WPAmmount, null as WPPercent,
aw.ToCollectAmmount as AWAmmount, aw.ToCollectPercent as AWPercent
from PaymentRequests pr
left join AdvanceByWarranties aw on (aw.ProjectId = pr.ProjectId and aw.NumberPaymentState = pr.NumberPaymentState)
You might have wanted what you show, but it doesn't work like this.
Just use UNION ALL between your first two queries, and rename the columns accordingly. Here is some pseudocode hybrid to guide you:
select keycols, workercols, null as advancecols
from pr join worker
union all
select keycols, null as workercols, advancecols
from pr join advancecols
I have the next data base:
Table Bill:
Table Bill_Details:
And Table Type:
I want a query to show this result:
The query as far goes like this:
SELECT
Bill.Id_Bill,
Type.Id_Type,
Type.Info,
Bill_Details.Deb,
Bill_Details.Cre,
Bill.NIT,
Bill.Date2,
Bill.Comt
FROM Type
RIGHT JOIN (Bill INNER JOIN Bill_Details
ON Bill.Id_Bill = Bill_Details.Id_Bill)
ON Type.Id_Type = Bill_Details.Id_Type
ORDER BY Bill.Id_Bill, Type.Id_Type;
With this result:
I'm not sure how to deal or how to include this:
Type.600,
Type."TOTAL",
IIF(SUM(Bill_Details.Deb) - Sum(Bill_Details.Cre) >= 0, ABS(SUM(Bill_Details.Deb) - Sum(Bill_Details.Cre)), "" ),
IIF(SUM(Bill_Details.Deb) - Sum(Bill_Details.Cre) <= 0, ABS(SUM(Bill_Details.Deb) - Sum(Bill_Details.Cre)), "" )
The previous code is the responsable of include new data in some fields, since all of the other fields will carry the same data of the upper register. I'll apreciate some sugestions to acomplish this.
Here is a revised version of the UNION which you removed from the question. The original query was a good start, but you just did not provide sufficient details about the error or problem you were experiencing. My comments were not meant to have you remove the problem query, only that you needed to provide more details about the error or problem. In the future if you have a UNION, make sure the each query of the UNION works separately. Then you could debug problems easier, one step at a time.
Problems which I corrected in the second query of the UNION:
Removed reference to table [Type] in the query, since it was not part of the FROM clause. Instead, I replaced it with a literal value.
Fixed FROM clause to join both [Bill] and [Bill_Details] tables. You had fields from both tables, so why would you not join on them just like in the first query of the UNION?
Grouped on all fields from table [Bill] referenced in the SELECT clause. You must either group on all fields, or include them in aggregate expressions like Sum() or First(), etc.
Replaced empty strings with Nulls for the False cases on Iif() statements.
SELECT
Bill.Id_Bill, Type.Id_Type, Type.Info,
Bill_Details.Deb,
Bill_Details.Cre,
Bill.NIT, Bill.Date2, Bill.Comt
FROM
Type RIGHT JOIN (Bill INNER JOIN Bill_Details
ON Bill.Id_Bill = Bill_Details.Id_Bill)
ON Type.Id_Type = Bill_Details.Id_Type;
UNION
SELECT
Bill.Id_Bill, 600 As Id_Type, "TOTAL" As Info,
IIF(SUM(Bill_Details.Deb) - Sum(Bill_Details.Cre) >= 0, ABS(SUM(Bill_Details.Deb) - Sum(Bill_Details.Cre)), Null ) As Deb,
IIF(SUM(Bill_Details.Deb) - Sum(Bill_Details.Cre) <= 0, ABS(SUM(Bill_Details.Deb) - Sum(Bill_Details.Cre)), Null ) As Cre,
Bill.NIT, Bill.Date2, Bill.Comt
FROM Bill INNER JOIN Bill_Details
ON Bill.Id_Bill = Bill_Details.Id_Bill
GROUP BY Bill.Id_Bill, Bill.NIT, Bill.Date2, Bill.Comt;
I'm trying to find a way to find a way to compare two queries that use a combine sent of criteria. In this case we have Prefixes (Two letter code like DA) and Pack number 1234567. In the query I've created a field that combines these two things so it appears 1234567DA this is done with each of the queries from the separate tables they are pulled from. The idea is that if this is in one table and not the other it would show up as "False". I tried to use an Unmatched query but that doesn't seem to work. What I have currently is as follows:
SELECT
[1LagoTest].Prefix,
[1BigPicPackPref].BigPicPP,
IIf([BigPicPP]=[LagoPP],"True","False") AS Compare,
[1LagoTest].RETAIL,
[1LagoTest].MEDIA
FROM 1LagoTest
LEFT JOIN 1BigPicPackPref
ON [1LagoTest].[Prefix] = [1BigPicPackPref].[BigPicPP]
WHERE (((IIf([BigPicPP]=[LagoPP],"True","False")) Like "False")
AND (([1LagoTest].MEDIA) Not Like "*2019 FL*"))
ORDER BY [1LagoTest].RETAIL;
Right now it will show whats missing from LagoPP but doesn't give me anything from missing packs in BigPicPP. Any help in the right direction would be greatly appreciated.
Thanks!!
This gets a little tricky in Access without FULL OUTER JOIN, but the general idea to is replicate a FULL OUTER JOIN using UNION ALL, then filter from that.
Something like this:
SELECT I.Prefix,
I.BigPicPP,
I.Compare,
I.Retail,
I.Media
FROM (SELECT L.Prefix,
B.BigPicPP,
IIf([BigPicPP]=[LagoPP],"True","False") as Compare,
L.Retail,
L.Media
FROM 1LagoTest L
JOIN 1BigPicPackPref B ON L.Prefix = B.BigPicPP
WHERE L.Media NOT LIKE "*2019 FL*"
UNION ALL
SELECT L.Prefix,
B.BigPicPP,
"False", --Missing records from 1BigPicPackPref
L.Retail,
L.Media
FROM 1LagoTest L
LEFT JOIN 1BigPicPackPref B ON L.Prefix = B.BigPicPP
AND L.Media NOT LIKE "*2019 FL*"
WHERE B.Prefix IS NULL
UNION ALL
SELECT B.Prefix,
B.BigPicPP,
"False", --Missing records from 1LagoTest
L.Retail,
L.Media
FROM 1LagoTest L
RIGHT JOIN 1BigPicPackPref B ON L.Prefix = B.BigPicPP
AND L.Media NOT LIKE "*2019 FL*"
WHERE L.Prefix IS NULL
) AS I
You only need IFF in the first part of the union because in the second two parts one side will always be NULL, so we know the compare will always fail and be False.
You shouldn't need this part of your current WHERE clause at all (((IIf([BigPicPP]=[LagoPP],"True","False")) Like "False"). But if you only want to see False records, just add WHERE I.Compare = "False" to the bottom of the outer select.
The reason the "Unmatched" query (assuming through the Wizard) does not work, is because you are attempting to see the values of two separate tables / queries that do not match either table / query. This is not how the "Unmatched" works. All that will give you is a single table / query that does not match another single table / query.
This can most likely be done any number of ways, but this would probably get you where you want to be (or close to it):
SELECT
a.Prefix,
b.BigPicPP,
IIf([BigPicPP]=[LagoPP],"True","False") AS Compare,
a.RETAIL,
a.MEDIA
FROM [1LagoTest] a
LEFT JOIN [1BigPicPackPref] b ON a.Prefix = b.BigPicPP
WHERE a.MEDIA Not Like "*2019 FL*"
AND b.BigPicPP IS NULL
ORDER BY a.RETAIL
UNION
SELECT
a.Prefix,
b.BigPicPP,
IIf([BigPicPP]=[LagoPP],"True","False") AS Compare,
a.RETAIL,
a.MEDIA
FROM [1LagoTest] a
RIGHT JOIN [1BigPicPackPref] b ON a.Prefix = b.BigPicPP
WHERE a.MEDIA Not Like "*2019 FL*"
AND a.Prefix IS NULL
ORDER BY a.RETAIL
NOTE: Depending on the data structure, the ORDER BY may cause some issues.
So the way I got this to finally work was to build two separate queries. One looking at what was missing from Lago and One that was looking at what was missing from BigPic. It was the only way I could get it to give me both sets of missing data. If I can find a better way to do it through one query I will report back as I'm still gonna play around with it.
I am fairly new in Access and SQL programming. I am trying to do the following:
Sum(SO_SalesOrderPaymentHistoryLineT.Amount) AS [Sum Of PaymentPerYear]
and group by year even when there is no amount in some of the years. I would like to have these years listed as well for a report with charts. I'm not certain if this is possible, but every bit of help is appreciated.
My code so far is as follows:
SELECT
Base_CustomerT.SalesRep,
SO_SalesOrderT.CustomerId,
Base_CustomerT.Customer,
SO_SalesOrderPaymentHistoryLineT.DatePaid,
Sum(SO_SalesOrderPaymentHistoryLineT.Amount) AS [Sum Of PaymentPerYear]
FROM
Base_CustomerT
INNER JOIN (
SO_SalesOrderPaymentHistoryLineT
INNER JOIN SO_SalesOrderT
ON SO_SalesOrderPaymentHistoryLineT.SalesOrderId = SO_SalesOrderT.SalesOrderId
) ON Base_CustomerT.CustomerId = SO_SalesOrderT.CustomerId
GROUP BY
Base_CustomerT.SalesRep,
SO_SalesOrderT.CustomerId,
Base_CustomerT.Customer,
SO_SalesOrderPaymentHistoryLineT.DatePaid,
SO_SalesOrderPaymentHistoryLineT.PaymentType,
Base_CustomerT.IsActive
HAVING
(((SO_SalesOrderPaymentHistoryLineT.PaymentType)=1)
AND ((Base_CustomerT.IsActive)=Yes))
ORDER BY
Base_CustomerT.SalesRep,
Base_CustomerT.Customer;
You need another table with all years listed -- you can create this on the fly or have one in the db... join from that. So if you had a table called alltheyears with a column called y that just listed the years then you could use code like this:
WITH minmax as
(
select min(year(SO_SalesOrderPaymentHistoryLineT.DatePaid) as minyear,
max(year(SO_SalesOrderPaymentHistoryLineT.DatePaid) as maxyear)
from SalesOrderPaymentHistoryLineT
), yearsused as
(
select y
from alltheyears, minmax
where alltheyears.y >= minyear and alltheyears.y <= maxyear
)
select *
from yearsused
join ( -- your query above goes here! -- ) T
ON year(T.SO_SalesOrderPaymentHistoryLineT.DatePaid) = yearsused.y
You need a data source that will provide the year numbers. You cannot manufacture them out of thin air. Supposing you had a table Interesting_year with a single column year, populated, say, with every distinct integer between 2000 and 2050, you could do something like this:
SELECT
base.SalesRep,
base.CustomerId,
base.Customer,
base.year,
Sum(NZ(data.Amount)) AS [Sum Of PaymentPerYear]
FROM
(SELECT * FROM Base_CustomerT INNER JOIN Year) AS base
LEFT JOIN
(SELECT * FROM
SO_SalesOrderT
INNER JOIN SO_SalesOrderPaymentHistoryLineT
ON (SO_SalesOrderPaymentHistoryLineT.SalesOrderId = SO_SalesOrderT.SalesOrderId)
) AS data
ON ((base.CustomerId = data.CustomerId)
AND (base.year = Year(data.DatePaid))),
WHERE
(data.PaymentType = 1)
AND (base.IsActive = Yes)
AND (base.year BETWEEN
(SELECT Min(year(DatePaid) FROM SO_SalesOrderPaymentHistoryLineT)
AND (SELECT Max(year(DatePaid) FROM SO_SalesOrderPaymentHistoryLineT))
GROUP BY
base.SalesRep,
base.CustomerId,
base.Customer,
base.year,
ORDER BY
base.SalesRep,
base.Customer;
Note the following:
The revised query first forms the Cartesian product of BaseCustomerT with Interesting_year in order to have base customer data associated with each year (this is sometimes called a CROSS JOIN, but it's the same thing as an INNER JOIN with no join predicate, which is what Access requires)
In order to have result rows for years with no payments, you must perform an outer join (in this case a LEFT JOIN). Where a (base customer, year) combination has no associated orders, the rest of the columns of the join result will be NULL.
I'm selecting the CustomerId from Base_CustomerT because you would sometimes get a NULL if you selected from SO_SalesOrderT as in the starting query
I'm using the Access Nz() function to convert NULL payment amounts to 0 (from rows corresponding to years with no payments)
I converted your HAVING clause to a WHERE clause. That's semantically equivalent in this particular case, and it will be more efficient because the WHERE filter is applied before groups are formed, and because it allows some columns to be omitted from the GROUP BY clause.
Following Hogan's example, I filter out data for years outside the overall range covered by your data. Alternatively, you could achieve the same effect without that filter condition and its subqueries by ensuring that table Intersting_year contains only the year numbers for which you want results.
Update: modified the query to a different, but logically equivalent "something like this" that I hope Access will like better. Aside from adding a bunch of parentheses, the main difference is making both the left and the right operand of the LEFT JOIN into a subquery. That's consistent with the consensus recommendation for resolving Access "ambiguous outer join" errors.
Thank you John for your help. I found a solution which works for me. It looks quiet different but I learned a lot out of it. If you are interested here is how it looks now.
SELECT DISTINCTROW
Base_Customer_RevenueYearQ.SalesRep,
Base_Customer_RevenueYearQ.CustomerId,
Base_Customer_RevenueYearQ.Customer,
Base_Customer_RevenueYearQ.RevenueYear,
CustomerPaymentPerYearQ.[Sum Of PaymentPerYear]
FROM
Base_Customer_RevenueYearQ
LEFT JOIN CustomerPaymentPerYearQ
ON (Base_Customer_RevenueYearQ.RevenueYear = CustomerPaymentPerYearQ.[RevenueYear])
AND (Base_Customer_RevenueYearQ.CustomerId = CustomerPaymentPerYearQ.CustomerId)
GROUP BY
Base_Customer_RevenueYearQ.SalesRep,
Base_Customer_RevenueYearQ.CustomerId,
Base_Customer_RevenueYearQ.Customer,
Base_Customer_RevenueYearQ.RevenueYear,
CustomerPaymentPerYearQ.[Sum Of PaymentPerYear]
;
In access I wrote this query:
Select
I.sysid, I.MemberNumber, I.Date, I.Distributer,
F.MemberNumber as FMember, F.Date as FDate, I.Distributer as FDistributer
From Initial as I
Left Join Final as F ON
I.MemberNumber=F.MemberNumber and
I.Distributer=F.Distributer and
I.Date>=F.Date-14 and
I.Date<=F.Date+14;
But the left join is not behavior properly. There are fewer rows in this table then there are in Initial... but it should be keeping ALL rows from initial, because I am using a left join, right? I have found several rows in initial (like sysid=7, which is Initial's key) that just isn't coming into this table.
It may have to do with your AND logic. Add some ( ) parenthesis to this to include it all like so:
Select
I.sysid, I.MemberNumber, I.Date, I.Distributer,
F.MemberNumber as FMember, F.Date as FDate, I.Distributer as FDistributer
From Initial as I
Left Join Final as F ON
(I.MemberNumber=F.MemberNumber and
I.Distributer=F.Distributer and
(I.Date>=F.Date-14) and
(I.Date<=F.Date+14));
Also I think there is a dateadd function, I'd use that instead of + / -.
If you're in the Query Designer, make sure all the filters are cleared. I've built your tables and sql and can't reproduce your error.
SELECT I.sysid
, I.MemberNumber
, I.Dated
, I.Distributer
, F.MemberNumber
, F.Dated AS FDated
, F.Distributer AS FDistributer
FROM Initial AS I
LEFT JOIN Final AS F
ON I.Distributer = F.Distributer
AND I.MemberNumber = F.MemberNumber
AND I.Dated>=F.Dated-14
AND I.Dated<=F.Dated+14;
Try adding additional fields to the original table and using update queries to add extra columns. This way you can be sure you won't drop any columns.