Find the below attachment:
Currently I am trying to learn how to perform a multi-table join where one of the tables do not have a direct relationship (Standard PK-FK relationship) with the original table. Further, the desired output should be filtered out based on a few WHERE conditions.
I was assuming that if I joined DealsFurtherInfo table I should be able to bridge the relationship between the Deals and Location Points tables (since they do not share the DealsUID factor).
Here are the tables (originally from the image link)
Table: Deals
DealUID
CounterPartyUID
DealTypeUID
TradeDate
InactiveFlag
Table: CParties
CounterPartyUID
CounterPartyName
Table: DealsFurtherInfo
DealUID
LocationPointUID
Table: LocationPoints
LocationPointUID
LocationName
Desired output
DealUID CounterPartyName LocationName
Below is my code - If anyone could explain what am I doing incorrectly and walk me through SQL logic step by step, it would be highly appreciated.
SELECT
tblD.DealUID,
tblCP.CounterpartyName,
tblPP.PointCode AS Location
FROM
Deals tblD
JOIN
CounterParties tblCP ON tblD.CpartyUID = tblCP.CpartyUID
JOIN
DealsFurtherInfo tblDPL ON tblD.DealUID = tblDPL.DealUID
JOIN
LocationPoints tblPP ON tblDPL.PointUID = tblPP.PointUID
WHERE
tblD.DealTypeUID = 20110
AND tblD.InactiveFlag = 'N'
AND tblD.TradeDate > '2019-01-01'
Related
It feels like there is a very simple solution but I am new to SQL and have been struggling with this for a while.
I am working on joining two tables so that I can map the cost center in one to its associated product group in another. There is a parent child relationship here with product group as parent and cost center as child.
I am ultimately trying to see the spend data, currently only available by cost center in table 1, by the parent product group categorization. Prior to the join, I see the correct dollar value by cost center. After the join, the number dramatically increases and is incorrect.
Table 1 (purchase orders): cost_center_id, amount_ordered
Table 2 (employee plus): cost center_id, product_group_name
Below is a simplified sample of the query I am working with.
SELECT
po.po_cost_center_id,
ep.product_group_name,
SUM(po.amount_ordered)
FROM purchase_orders po
LEFT JOIN d_employee_plus ep on po.cost_center_id = ep.cost_center_id and ep.ds =
po.ds
WHERE
po.ds = (select max(ds) from purchase_orders)
GROUP BY 1,2
My take here is that you have duplicate rows because you're not aggregating on both the columns you're joining on. I may be wrong, though try using the following:
SELECT po.po_cost_center_id,
ep.ds,
ep.product_group_name,
SUM(po.amount_ordered)
FROM purchase_orders po
LEFT JOIN d_employee_plus ep
ON po.cost_center_id = ep.cost_center_id
AND ep.ds = po.ds
WHERE po.ds = (SELECT max(ds) FROM purchase_orders)
GROUP BY po.po_cost_center_id,
ep.ds,
ep.product_group_name
For more troubleshooting, if you can provide some sample data, I may help you further.
Does it work for you?
I'm trying to get (one or multiple) number lines (PROGCODE) that are attached to an OBJECT (i.e. a building) that is connected to a Relation which in turn has a GC_ID (relation unique ID). I need all the buildings & progcodes connected to a relation ID in a firebird 2.5 database generated by my companies ERP system.
I can look through all the tables in the firebird database and run select queries on them.I like to think I have the join statement syntax down and I know how to find the unique ID belonging to a relation, unfortunately I'm unsure how I can find the correct table that houses the information I seek.
The table I think this data is in has the following fields:
GC_ID, DEVICE_GC_ID, USER_GC_ID, CODE, DESCRIPTION.
However when I query it using
select GC_ID, DEVICE_GC_ID, USER_GC_ID, CODE, DESCRIPTION
from AT_PROGCODE A
Then I get a description of the fields I'm trying to query.
i.e.
| GC_ ID : 100005 | DEVICE_GC_ID : 100174 | USER_GC_ID : 1000073 | DESCRIPTION: >description of what I'm trying to query< |
Can anyone shed some insight how I should handle this?
Update 7-09-2017
I spoke with the ERP consultant and was told the tables I needed (if anyone reading this is using syntess Atrium; the AT_BRENT table holds a description of all the tables.)
However, I've run into a new problem; the data I get from my sql query keeps streaming (it seems to never end with me stopping the script at 90 mil loops and the ERP program crashing if I ask for a count).
select A.GC_OMSCHRIJVING Bedrijf, A.GC_CODE ,M.GC_OMSCHRIJVING Werktitel,
M.TELEFOON1, M.TELEFOON2, M.MOBIEL, M.EMAIL,
M.URL, M.DOORKIES_NR, M.WERKLOCATIE, M.EMAIL_INTERN
from AT_MEDEW M , AT_RELATIE A
JOIN AT_MEDEW ON A.GC_ID = M.GC_ID
WHERE M.TELEFOON1 <> '' OR M.TELEFOON2 <> '' OR M.MOBIEL <> ''
Any ideas on what's the cause for my latest peril?
First I had to find the AT_BRENT table which holds all the descriptions for tables in Syntess Atrium
Then I was using a CROSS JOIN (as pointed out by https://stackoverflow.com/users/696808/bacon-bits )
I ended up using
select A.GC_OMSCHRIJVING Bedrijf, A.GC_CODE ,M.GC_OMSCHRIJVING Werktitel,
M.TELEFOON1, M.TELEFOON2, M.MOBIEL, M.EMAIL,
M.URL, M.DOORKIES_NR, M.WERKLOCATIE, M.EMAIL_INTERN
from AT_MEDEW M
JOIN AT_RELATIE A ON A.GC_ID = M.GC_ID
WHERE M.TELEFOON1 <> '' OR M.TELEFOON2 <> '' OR M.MOBIEL <> ''
Thank you all who helped.
SELECT Boeking.reisnummer, (aantal_volwassenen + aantal_kinderen) AS totaal_reizigers
FROM Boeking
WHERE Boeking.reisnummer = Reis.Reisnummer
AND Reis.Reisnummer = Reis.Bestemmingscode;
Table 1 (Boeking) has aantal_volwassen and aantal_kinderen, and Reisnummer.
Table 2 (Reis) has Reisnummer and Bestemmingscode.
I have to show the total of aantal_volwassenen and aantal_kinderen. But i also have to show Reis.bestemmingscode which comes from a different table. Currently i have to enter a parameter, how can i solve this?
You need to specify all the tables in the FROM part of your query. The tables should then be joined (JOIN) to get the data you need.
SELECT Boeking.reisnummer
,(aantal_volwassenen + aantal_kinderen) AS totaal_reizigers
,Reis.Bestemmingscode
FROM Boeking INNER JOIN Reis
ON Boeking.reisnummer = Reis.Reisnummer
Good people of the internet, I need your help!
I'm trying to put together some SQL code to create a report. Basically, I'm needing to look at one table - tbl_Schedules - and fetch the maximum of the field SchedDone, which is a regular date field.
This is fair enough. I manage this using GROUP BY and MAX.
The same table also contains SchedFrom and SchedTo fields, and I need to get this from another record, but run alongside this.
Basically, I need a "LatestDate" field (which shows the max SchedDone), and then a "next scheduled" field (or fields), showing when it is next to be done, pulled from a row where the SchedDone is null.
My current code, displayed below (ignore everything but the tbl_Schedules stuff) is working to an extent. It shows the LatestDate as described above, but also shows the maximum of that Task's SchedFrom and SchedTo. These are all from different rows in the tbl_Schedules, which is what I want. I just need to know how to set up rules for the SchedFrom and SchedTo, preferably without involving any other tables or setting up multiple views.
I do have this working, but it's taking up several views and the speed involved is not good. I'd hope I can get it working in a single chunk of SQL code.
PS - tbl_PhysicalAssets is a one-to-many relationship with tbl_Operations (one row in tbl_PhysicalAssets to many in tbl_Operations), and tbl_Operations is a one-to-many relationship with tbl_Schedules (one row in tbl_Operations to many in tbl_Schedules).
Current code below (again, please ignore the other tables!) -
SELECT
dbo.tbl_PhysicalAsset.FKID_Contract,
dbo.tbl_PhysicalAsset.MyLevel,
dbo.tbl_PhysicalAsset.L1_Name,
dbo.tbl_PhysicalAsset.L2_Name,
dbo.tbl_PhysicalAsset.L3_Name,
dbo.tbl_OpList.Operation_Name,
dbo.tbl_Teams.Team_Name,
MAX(tbl_Schedules_1.SchedDone) AS LatestDate,
MAX(tbl_Schedules_1.SchedFrom) AS Expr1,
MAX(tbl_Schedules_1.SchedTo) AS Expr2
FROM
dbo.tbl_Schedules AS tbl_Schedules_1
RIGHT OUTER JOIN
dbo.tbl_PhysicalAsset
INNER JOIN
dbo.tbl_Operations ON dbo.tbl_PhysicalAsset.PKID_PhysicalAsset = dbo.tbl_Operations.FKID_PhysicalAsset
INNER JOIN
dbo.tbl_OpList ON dbo.tbl_Operations.FKID_Operation = dbo.tbl_OpList.PKID_Op
INNER JOIN
dbo.tbl_Teams ON dbo.tbl_Operations.FKID_Team = dbo.tbl_Teams.PKID_Team ON tbl_Schedules_1.FKID_Operation = dbo.tbl_Operations.PKID_Operation
GROUP BY
dbo.tbl_PhysicalAsset.FKID_Contract,
dbo.tbl_PhysicalAsset.MyLevel,
dbo.tbl_PhysicalAsset.L1_Name,
dbo.tbl_PhysicalAsset.L2_Name,
dbo.tbl_PhysicalAsset.L3_Name,
dbo.tbl_OpList.Operation_Name,
dbo.tbl_Teams.Team_Name
HAVING
(dbo.tbl_PhysicalAsset.FKID_Contract = 6)
AND (dbo.tbl_PhysicalAsset.MyLevel = 3)
This is rough as we don't know the exact details of your table structure.
But basically you need to first write the queries that get the two separate bits of information, make sure they work in isolation. You can then just join them together.
So something like (I've assumed FKID_Operation is the 'common' piece of info):
select
a.FKID_Operation
, b.LatestDate
, c.NextToDate
, c.NextFromDate
from tbl_Schedules a
inner join
(
select
m.FKID_Operation
, Max(m.SchedDone) as LatestDate
from tbl_Schedules m
where SchedDone is not null
) b
on a.FKID_Operation = b.FKID_Operation
inner join
(
select
n.FKID_Operation
, n.SchedTo as NextToDate
, n.SchedFrom as NextFromDate
from tbl_Schedules n
where SchedDone is null
) c
on a.FKID_Operation = c.FKID_Operation
I'd also look into CTE's as they can make this kind of query much easier to understand.
I have a PHP page running in postgres. I have 3 tables - workorders, wo_parts and part2vendor. I am trying to multiply 2 table column row datas together, ie wo_parts has a field called qty and part2vendor has a field called cost. These 2 are joined by wo_parts.pn and part2vendor.pn. I have created a query like this:
$scoreCostQuery = "SELECT SUM(part2vendor.cost*wo_parts.qty) as total_score
FROM part2vendor
INNER JOIN wo_parts
ON (wo_parts.pn=part2vendor.pn)
WHERE workorder=$workorder";
But if I add the costs of the parts multiplied by the qauntities supplied, it adds to a different number than what the script is doing. Help....I am new to this but if someone can show me in SQL I can modify it for postgres. Thanks
Without seeing example data, there's no way for us to know why you're query totals are coming out differently that when you do the math by hand. It could be a bad join, so you are getting more/less records than you expected. It's also possible that your calculations are off. Pick an example with the smallest number of associated records & compare.
My suggestion is to add a GROUP BY to the query:
SELECT SUM(p.cost * wp.qty) as total_score
FROM part2vendor p
JOIN wo_parts wp ON wp.pn = p.pn
WHERE workorder = $workorder
GROUP BY workorder
FYI: MySQL was designed to allow flexibility in the GROUP BY, while no other db I've used does - it's a source of numerous questions on SO "why does this work in MySQL when it doesn't work on db x...".
To Check that your Quantities are correct:
SELECT wp.qty,
p.cost
FROM WO_PARTS wp
JOIN PART2VENDOR p ON p.pn = wp.pn
WHERE p.workorder = $workorder
Check that the numbers are correct for a given order.
You could try a sub-query instead.
(Note, I don't have a Postgres installation to test this on so consider this more like pseudo code than a working example... It does work in MySQL tho)
SELECT
SUM(p.`score`) AS 'total_score'
FROM part2vendor AS p2v
INNER JOIN (
SELECT pn, cost * qty AS `score`
FROM wo_parts
) AS p
ON p.pn = p2v.pn
WHERE p2n.workorder=$workorder"
In the question, you say the cost column is in part2vendor, but in the query you reference wo_parts.cost. If the wo_parts table has its own cost column, that's the source of the problem.