People,
I am desperately trying to make a query that seems simple, but I am unable to master at 4.30 in the morning.. perhaps someone can offer some advice on what I am doing wrong.
The task: I have two tables, one a list of systems and another a list of certificates. I want to ensure that I list all systems and any certificates with Z85 in one column and Z86 in another. When I try my left join in access, I do not get all the rows from table 1, but I understand why. I just don't know how to make the AND statements properly.
I am using Microsoft access to get my head around it.
Can anyone help?
Here is my (failing) attempt..
SELECT
u_AllSubs.SubSystem,
ul_ZenCerts.[Date Accepted by Client PMT Rep]
FROM (u_AllSubs
LEFT JOIN ul_ZenCerts ON ((u_AllSubs.SubSystem = ul_ZenCerts.Subsystem) AND ((ul_ZenCerts.[Certificate Template]) Like "*Z85*"))
LEFT JOIN (ul_ZenCerts AS ul_ZenCerts_1 ON ((u_AllSubs.SubSystem = ul_ZenCerts_1.Subsystem) AND ((ul_ZenCerts_1.[Certificate Template]) Like "*Z86*")));
This might help to get the values in separate columns. Hoping I got your field choices right, but I think you get the idea from this
select ul_ZenCerts, subsystem
into #tempz1
from ul_ZenCerts.Subsystem z1 where z1.[Certificate Template] Like '%Z85%'
select ul_ZenCerts, subsystem
into #tempz2
from ul_ZenCerts.Subsystem z2 where z2.[Certificate Template]) Like '%Z86%'
SELECT
u.SubSystem,
z1.ul_ZenCerts,
Z2.ul_ZenCerts
FROM u_AllSubs u
left join #tempz1 z1 on u.SubSystem = z1.Subsystem
left join #tempz2 z2 on u.SubSystem = z2.Subsystem
Related
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 trying to join 4 tables together as shown in this diagram here:
https://imgur.com/a/jukJvSw
The SQL query I have written returns all fields except TExpiryDate and I have not come across any examples online that can help me understand this. Please help.
SELECT tbPurchaseHeader.PurchaseDate,
tbSupplier.CompanyName,
tbPurchaseDetails.UnitCost,
tbPurchaseDetails.Quantity,
tbPurchaseDetails.Bonus,
tbpurchasedetails.BatchID,
tbBatch.TExpiryDate
FROM ((tbPurchaseDetails
INNER JOIN tbPurchaseHeader
ON tbPurchaseDetails.PurchaseID = tbPurchaseHeader.PurchaseID)
LEFT JOIN tbBatch
ON tbPurchaseDetails.BID = tbBatch.BID)
INNER JOIN tbSupplier
ON tbPurchaseHeader.SupplierID = tbSupplier.SupplierID
WHERE tbPurchaseDetails.ProductID = ?
ORDER BY tbPurchaseHeader.PurchaseDate
Turns out BID contains empty values in the database. I have decided to make links elsewhere to get the data. Thanks everyone for making me realise this.
I made a query and wanted to not have any duplicates but i got some times 3 duplicates and when i used DISTINCT or DISTINCTROW i got only 2 duplicates.
SELECT f.flight_code,
f.status,
a.airport_name,
a1.airport_name,
f.departing_date+f.departing_time AS SupposedDepartingTime,
f.landing_date+f.landing_time AS SupposedLandingTime,
de.actual_takeoff_date+de.actual_takeoff_time AS ActualDepartingTime,
SupposedLandingTime+(ActualDepartingTime-SupposedDepartingTime) AS ActualLandingTime
FROM
(((Flights AS f
LEFT JOIN Aireports AS a
ON a.airport_code = f.depart_ap)
LEFT JOIN Aireports AS a1
ON f.target_ap = a1.airport_code)
LEFT JOIN Irregular_Events AS ie
ON f.flight_code = ie.flight_code)
LEFT JOIN Delay_Event AS de
ON ie.IE_code = de.delay_code;
had to use LEFT JOIN because when i used INNER JOIN i missed some of the things i wanted to show because i wanted to see all the flights and not only the flights that got delayed or canceled.
This is the results when i used INNER JOIN, you can see only the flights that have the status "ביטול" or "עיכוב" and that is not what i wanted.
[the results with LEFT JOIN][2]
[2]: https://i.stack.imgur.com/cgE2G.png
and when i used DISTINCT where you see the rows with the NUMBER 6 on the first column it appear only two times
IMPORTANT!
I just checked my query and all the tables i use there and i saw my problem but dont know how to fix it!
in the table Irregular_Events i have more the one event for flights 3,6 and 8 and that is why when i use LEFT JOIN i see more even thou i use distinct, please give me some help!
Not entirely sure without seeing the table structure, but this might work:
SELECT f.flight_code,
f.status,
a.airport_name,
a1.airport_name,
f.departing_date+f.departing_time AS SupposedDepartingTime,
f.landing_date+f.landing_time AS SupposedLandingTime,
de.actual_takeoff_date+de.actual_takeoff_time AS ActualDepartingTime,
SupposedLandingTime+(ActualDepartingTime-SupposedDepartingTime) AS ActualLandingTime
FROM
((Flights AS f
LEFT JOIN Aireports AS a
ON a.airport_code = f.depart_ap)
LEFT JOIN Aireports AS a1
ON f.target_ap = a1.airport_code)
LEFT JOIN
(
SELECT
ie.flight_code,
de1.actual_takeoff_date,
de1.actual_takeoff_time
FROM
Irregular_Events ie
INNER JOIN Event AS de1
ON ie.IE_code = de1.delay_code
) AS de
ON f.flight_code = de.flight_code
It is hard to tell what is the problem with your query without any sample of the output, and without any description of the structure of your tables.
But your problem is that your are querying from the flights table, which [I assume] can be linked to multiple irregular_events, which can possibly also be linked to multiple delay_event.
If you want to get only one row per flight, you need to make sure your joins return only one row too. Maybe you can do it by adding one more condition to the join, or by adding a condition in a sub-query.
EDIT
You could try to add a GROUP BY to the query:
GROUP BY
f.flight_code,
f.status,
a.airport_name,
a1.airport_name;
Good morning all.
I've read some of the suggested question before posting this but seems like no one has my same issue (probably and inidicator of how bad I am in Drupal and coding in general)
I need to write a query that returns all the nodes with TWO SPECIFIC taxonomies associated to it (of which I know the IDs), but it seems I don't know the right syntax cause I just manage to get it work with ONE term id.
Here's what I have so far (and works)
SELECT * FROM node
INNER JOIN term_node AS tn ON node.vid = tn.vid
LEFT JOIN content_type_extra_content AS xc ON node.vid = xc.vid
WHERE tn.tid IN (SELECT th.tid FROM term_hierarchy AS th WHERE th.tid = '146')
That '146' is the id of the first taxonomy term I need to check (call it "shoes")
Now I have to check that the node has also the taxonomy id '223' (call it "season")
I've tried different solutions with no avail.
I'm pretty sure the solution is under my nose but at the moment I can't wrap my head around it.
Please note that the taxonomies are in different vocaboularies and they are at level-0
Thanks in advance for any help
If I understand you correctly, you want the nodes which have 2 specific terms (shoes and season), then try something like this:
SELECT * FROM node
INNER JOIN term_node AS tn ON node.vid = tn.vid
LEFT JOIN content_type_extra_content AS xc ON node.vid = xc.vid
WHERE tn.tid IN ('146','223')
GROUP BY node.vid
HAVING count(*) = 2
I am new to this portal. I have a very simple problem to be solved. It is related to the ANSI SQL. I am writing a reports using BIRT and I am fetching the data from several tables. I understand how the SQL joins work but maybe not fully. I researched google for hours and I could not find relevant answer.
My problem is that one of the relationships in the code produce a duplicate result (the same row is copied - duplicated). I was so determined to solve it I used every type of join available. Some of this SQL was produced already. I shall post my code below. I know that one of the solutions to my problem is use of the 'DISTINCT' keyword. I have used it and it does not solve my problem.
Can anyone propose any solution to that?
Sample code:
SELECT DISTINCT
partmaster.partdesc,
partmaster.uom,
traders.name AS tradername,
worksorders.id AS worksorderno,
worksorders.partid,
worksorders.quantity,
worksorders.duedate,
worksorders.traderid,
worksorders.orderid,
routingoperations.partid,
routingoperations.methodid,
routingoperations.operationnumber,
routingoperations.workcentreid,
routingoperations.settime,
routingoperations.runtime,
routingoperations.perquantity,
routingoperations.description,
routingoperations.alternativeoperation,
routingoperations.alternativeoperationpreference,
machines.macdesc,
machines.msection,
allpartmaster.partnum,
allpartmaster.nbq,
allpartmaster.partdesc,
routingoperationtools.toolid,
tools.tooldesc,
CAST (emediadetails.data as VARCHAR(MAX)) AS cplandata
FROM worksorders
INNER JOIN partmaster ON worksorders.partid = partmaster.partnum
INNER JOIN traders traders ON worksorders.traderid = traders.id
INNER JOIN routingoperations routingoperations ON worksorders.partid = routingoperations.partid
AND worksorders.routingmethod = routingoperations.methodid
INNER JOIN allpartmaster allpartmaster ON routingoperations.partid = allpartmaster.partnum
LEFT OUTER JOIN machines machines ON routingoperations.workcentreid = machines.macid
LEFT OUTER JOIN routingoperationtools routingoperationtools ON routingoperationtools.partid = routingoperations.partid
AND routingoperationtools.routingmethod = routingoperations.methodid
AND routingoperationtools.operationnumber = routingoperations.operationnumber
LEFT OUTER JOIN tools tools ON tools.toolid = routingoperationtools.toolid
LEFT OUTER JOIN emediadetails ON emediadetails.keyvalue1 = worksorders.id
AND emediadetails.keyvalue2 = routingoperations.operationnumber
AND emediadetails.emediaid = 'worksorderoperation'
I do not have too much of the test data but I know that one row is copied twice as the result of the query below even tho I used DISTINCT keyword. I know that my problem is rather specific and not general but the solution that someone will propose may help others with the similar problem.
I can't solve your problem for you without some test data, but I have some helpful hints.
In principle, you should be really careful with DISTINCT - its a great way of hiding bugs in your query. Only use DISTINCT if you are confident that the underlying data contains legitimate duplicates. If your joins are wrong, and you're getting a cartesian product, you can remove the duplicates from the results with DISTINCT - but that doesn't stop the cartesian product being generated. You'll get very poor performance, and possibly incorrect data.
Secondly, I am pretty sure that DISTINCT works properly - you are almost certainly not getting duplicates, but it may be hard to spot the difference between two rows. Leading or trailing spaces in text columns, for instance could be to blame.
Finally, to work through this problem, I'd recommend building the query up join by join, and seeing where you get the duplicate - that's the join that's to blame.
So, start with:
SELECT
traders.name AS tradername,
worksorders.id AS worksorderno,
worksorders.partid,
worksorders.quantity,
worksorders.duedate,
worksorders.traderid,
worksorders.orderid
FROM worksorders
INNER JOIN traders traders ON
worksorders.traderid = traders.id
and build up to the next join.
Are you sure the results are exact duplicates? Makes sure there isn't one column that actually has a different value.