use field in sql join where clause - sql

I am trying to write a crystal report using a sql statement because it runs much much faster. But I am having trouble with some of the linkings. I need to use the result of a link for criteria in subsequent links.
Ok, here is a sample of what my statement looks like:
(The lines marked with ** are the lines in question)
SELECT
Part.PartNum,
Cust.CustNum,
Cust.CustID,
YTD.Qty
FROM
(
SELECT
Pub.Part.PartNum,
Pub.Part.UserChar1 AS CustID
FROM
Pub.Part
) AS Part
LEFT OUTER JOIN (
SELECT
Pub.Customer.CustID,
Pub.Customer.CustNum,
Pub.Customer.Name
FROM
Pub.Customer
WHERE
Pub.Customer.CustID = '1038'
) AS Cust
ON Part.CustID = Cust.CustID
LEFT OUTER JOIN (
SELECT
Pub.OrderDtl.PartNum,
Sum(Pub.OrderDtl.OrderQty) AS Qty
FROM
Pub.OrderHed JOIN Pub.OrderDtl ON
Pub.OrderHed.OrderNum = Pub.OrderDtl.OrderNum
WHERE
**Pub.OrderHed.CustNum = Cust.CustNum AND**
**Pub.OrderDtl.PartNum = Part.PartNum AND**
YEAR(Pub.OrderHed.OrderDate)=YEAR(CURDATE())
GROUP BY
Pub.OrderDtl.PartNum
) AS YTD ON Part.PartNum = YTD.PartNum
Now, I get an error that says:
Part.PartNum cannot be found or is not specified for the query.
I get the same error for Cust.CustNum. Will you help me figure out what I am doing wrong? Thanks!

The problem is that you are using one of the aliases, inside of a sub-query which you cannot do. You will have to do something similar to this:
SELECT Part.PartNum,
Cust.CustNum,
Cust.CustID,
YTD.Qty
FROM
(
SELECT Pub.Part.PartNum,
Pub.Part.UserChar1 AS CustID
FROM Pub.Part
) AS Part
LEFT OUTER JOIN
(
SELECT Pub.Customer.CustID,
Pub.Customer.CustNum,
Pub.Customer.Name
FROM Pub.Customer
WHERE Pub.Customer.CustID = '1038'
) AS Cust
ON Part.CustID = Cust.CustID
LEFT OUTER JOIN
(
SELECT Pub.OrderDtl.PartNum,
Sum(Pub.OrderDtl.OrderQty) AS Qty,
Pub.OrderHed.CustNum
FROM Pub.OrderHed
JOIN Pub.OrderDtl
ON Pub.OrderHed.OrderNum = Pub.OrderDtl.OrderNum
WHERE YEAR(Pub.OrderHed.OrderDate)=YEAR(CURDATE())
GROUP BY Pub.OrderDtl.PartNum, Pub.OrderHed.CustNum
) AS YTD
ON Part.PartNum = YTD.PartNum
AND Cust.CustNum = YTD.CustNum
Looking at your query more, you can actually get rid of two of the subqueries:
SELECT Part.PartNum,
Cust.CustNum,
Cust.CustID,
YTD.Qty
FROM Pub.Part Part
LEFT OUTER JOIN Pub.Customer Cust
ON Part.CustID = Cust.CustID
AND Cust.CustID = '1038'
LEFT OUTER JOIN
(
SELECT d.PartNum,
Sum(d.OrderQty) AS Qty,
h.CustNum
FROM Pub.OrderHed h
JOIN Pub.OrderDtl d
ON h.OrderNum = d.OrderNum
WHERE YEAR(h.OrderDate)=YEAR(CURDATE())
GROUP BY d.PartNum
) AS YTD
ON Part.PartNum = YTD.PartNum
AND Cust.CustNum = YTD.CustNum

This is because you can't access a parent sub-query (cust, part) within another sub-query (YTD)
However, the solution is easy in your case, filter in the ON clause instead:
SELECT
Part.PartNum,
Cust.CustNum,
Cust.CustID,
YTD.Qty
FROM
(
SELECT
Pub.Part.PartNum,
Pub.Part.UserChar1 AS CustID
FROM
Pub.Part
) AS Part
LEFT OUTER JOIN (
SELECT
Pub.Customer.CustID,
Pub.Customer.CustNum,
Pub.Customer.Name
FROM
Pub.Customer
WHERE
Pub.Customer.CustID = '1038'
) AS Cust
ON Part.CustID = Cust.CustID
LEFT OUTER JOIN (
SELECT
Pub.OrderDtl.PartNum,
Sum(Pub.OrderDtl.OrderQty) AS Qty,
Pub.OrderHed.CustNum
FROM
Pub.OrderHed JOIN Pub.OrderDtl ON
Pub.OrderHed.OrderNum = Pub.OrderDtl.OrderNum
WHERE
YEAR(Pub.OrderHed.OrderDate)=YEAR(CURDATE())
GROUP BY
Pub.OrderDtl.PartNum
) AS YTD ON Part.PartNum = YTD.PartNum AND Cust.CustNum = YTD.CustNum

Related

Access Subquery On mulitple conditions

This SQL query needs to be done in ACCESS.
I am trying to do a subquery on the total sales, but I want to link the sale to the province AND to product. The below query will work with one or the other: (po.product_name = allp.all_products) AND (p.province = allp.all_province); -- but it will no take both.
I will be including every month into this query, once I can figure out the subquery on with two criteria.
Select
p.province as [Province],
po.product_name as [Product],
all_price
FROM
(purchase_order po
INNER JOIN person p
on p.person_id = po.person_id)
left join
(
select
po1.product_name AS [all_products],
sum(pp1.price) AS [all_price],
p1.province AS [all_province]
from (purchase_order po1
INNER JOIN product pp1
on po1.product_name = pp1.product_name)
INNER JOIN person p1
on po1.person_id = p1.person_id
group by po1.product_name, pp1.price, p1.province
)
as allp
on (po.product_name = allp.all_products) AND (p.province = allp.all_province);
Make the first select sql into a table by giving it an alias and join table 1 to table 2. I don't have your table structure or data to test it but I think this will lead you down the right path:
select table1.*, table2.*
from
(Select
p.province as [Province],
po.product_name as [Product]
--removed this ,all_price
FROM
(purchase_order po
INNER JOIN person p
on p.person_id = po.person_id) table1
left join
(
select
po1.product_name AS [all_products],
sum(pp1.price) AS [all_price],
p1.province AS [all_province]
from (purchase_order po1
INNER JOIN product pp1
on po1.product_name = pp1.product_name)
INNER JOIN person p1
on po1.person_id = p1.person_id
group by po1.product_name, pp1.price, p1.province --check your group by, I dont think you want pp1.price here if you want to aggregate
) as table2 --changed from allp
on (table1.product = table2.all_products) AND (table1.province = table2.all_province);

Query for records count from shown rows

select lsd.lsd ,count(reading.infrastructure_id),type.infrastructure_type from public.cpreading_lsd lsd
left join cpreading_infrastructure infra on lsd.id = infra.lsd_id
left join public.cpreading_infrastructure_type type on type.id = infra.infrastructure_type_id
left join cpreading_cp_reading_entry reading on infra.id = reading.infrastructure_id
group by lsd.lsd,type.infrastructure_type
Make the query as an in-line view and select count(*) from the in-line view
Eg:
select count(*) from(
select lsd.lsd
,count(reading.infrastructure_id)
,type.infrastructure_type
from public.cpreading_lsd lsd
left join cpreading_infrastructure infra on lsd.id = infra.lsd_id
left join public.cpreading_infrastructure_type type on type.id = infra.infrastructure_type_id
left join cpreading_cp_reading_entry reading on infra.id = reading.infrastructure_id
group by lsd.lsd,type.infrastructure_type
)x

trying to modifying a multi join query with issues

I have a simplified query shown below, that does mulitple joins. I'm trying to add a field to be selected but I am unable to find a good way of joining it without changing the number of records that come up...
SELECT tblApp.AppID
,'Type' = tblRef.Label
,'Status' = tblRef2.Label
FROM (
(
(
tblApp LEFT JOIN tblAppExt ON tblApp.AppID = tblAppExt.AppID
) LEFT JOIN tblRef ON tblApp.AppTypeID = tblReferenceData.ID
) LEFT JOIN tblRef tblRef2 ON tblApp.AppStatusID = tblRef2.ID
)
As is - I'm getting 149 results, if I try to Join it in any way, I get like 10 time fold the number of records. All I'm hoping to do is be able to SELECt another field. I'm hoping to join tblAppExt2 that has AppID just like the other tables in the FROM part of the query, so my goal would basically be to do this:
SELECT tblApp.AppID
,'Type' = tblRef.Label
,'Status' = tblRef2.Label
,'NewField' = tblAppExt2.NewField
First thing to try is DISTINCT:
SELECT DISTINCT
tblApp.AppID
, [Type] = tblRef.Label
, [Status] = tblRef2.Label
, [NewField] = tblAppExt2.NewField
FROM tblApp
LEFT JOIN tblAppExt
ON tblApp.AppID = tblAppExt.AppID
LEFT JOIN tblRef
ON tblApp.AppTypeID = tblReferenceData.ID
LEFT JOIN tblRef tblRef2
ON tblApp.AppStatusID = tblRef2.ID
LEFT JOIN tblAppExt2.NewField
ON something = somethingElse ;
If that doesn't work, it means there are multiple different values for [NewField] and you'll need to tell it how to select the correct one. For example, to take the most recent [NewField] you can use a CTE with the ROW_NUMBER function:
; WITH AllRecords
AS (
SELECT DISTINCT
tblApp.AppID
, [Type] = tblRef.Label
, [Status] = tblRef2.Label
, [NewField] = tblAppExt2.NewField
, MyRank = ROW_NUMBER() OVER(PARTITION BY tblApp.ID ORDER BY tblAppExt2.DateEntered DESC)
FROM tblApp
LEFT JOIN tblAppExt
ON tblApp.AppID = tblAppExt.AppID
LEFT JOIN tblRef
ON tblApp.AppTypeID = tblReferenceData.ID
LEFT JOIN tblRef tblRef2
ON tblApp.AppStatusID = tblRef2.ID
LEFT JOIN tblAppExt2.NewField
ON something = somethingElse
)
SELECT *
FROM AllRecords
WHERE AllRecords.MyRank = 1 ;
You can use outer apply or correlated subquery :
SELECT tblApp.AppID, tblRef.Label as [Type], tblRef2.Label as [Status],
tappext.NewField
FROM tblApp tapp LEFT JOIN
tblAppExt tex
ON tapp.AppID = tex.AppID LEFT JOIN
tblRef tref
ON tapp.AppTypeID = tref.ID LEFT JOIN
tblRef tblRef2
ON tapp.AppStatusID = tblRef2.ID OUTER APPLY
( SELECT TOP (1) tappext.*
FROM tblAppExt2 tappext
WHERE tapp.AppID = AppID
ORDER BY ??
) tappext;

SQL Join SELECT MAX, But also where a value does not exist

I have the following SQL which works - It displays all of the items, along with the MAX starttime.
However, I'd also like to show items that to not have a record in playlistlog - How would one
SELECT items.idx, items.title, items.artist, playlistlog.starttime
FROM items
LEFT JOIN playlistlog ON playlistlog.item = items.idx
WHERE playlistlog.starttime = (
SELECT MAX(starttime)
FROM playlistlog AS pl2
WHERE pl2.item = items.idx
)
The where clause is turning your left join into an inner join.
Use AND instead of WHERE.
SELECT items.idx, items.title, items.artist, playlistlog.starttime
FROM items
LEFT JOIN playlistlog ON playlistlog.item = items.idx
and playlistlog.starttime = (
SELECT MAX(starttime)
FROM playlistlog AS pl2
WHERE pl2.item = items.idx
)
This can be done a bit shorter using standard SQL's window function:
SELECT items.idx, items.title, items.artist, pl.starttime
FROM items
LEFT JOIN (
select item,
starttime,
row_number() over (partition by item order by starttime desc) as rn
from playlistlog
) pl ON pl.item = items.idx AND pl.rn = 1

Sum record data into one

I have this query which returns qty in each of my branch. now the branch has two WH_subType as you see in the attached diagram i have attached. I want to sum the 2 subtype and show its available qty. how can i do it.
my select query is like this
SELECT
dbo.WarehouseType.name AS Section,
dbo.WarehouseSubType.name AS WH_Type,
dbo.WarehouseSubType1.name AS WH_SubType,
dbo.Branch.name AS Branch,
(dbo.WarehouseProductQuantity.actualQuantity - dbo.WarehouseProductQuantity.reservedQuantity) AS AvailQty,
dbo.WarehouseProductQuantity.tafsilId AS Tafsil,
dbo.Tafsil.description AS Product_Name
FROM
dbo.WarehouseSubType
INNER JOIN
dbo.WarehouseType
ON
(
dbo.WarehouseSubType.warehouseTypeId = dbo.WarehouseType.id)
INNER JOIN
dbo.WarehouseSubType1
ON
(
dbo.WarehouseSubType.id = dbo.WarehouseSubType1.warehouseSubTypeId)
INNER JOIN
dbo.Warehouse
ON
(
dbo.WarehouseSubType1.id = dbo.Warehouse.warehouseSubType1Id)
INNER JOIN
dbo.Branch
ON
(
dbo.Warehouse.branchId = dbo.Branch.id)
INNER JOIN
dbo.WarehouseProductQuantity
ON
(
dbo.Warehouse.id = dbo.WarehouseProductQuantity.warehouseId)
INNER JOIN
dbo.TafsilLink
ON
(
dbo.WarehouseProductQuantity.tafsilId = dbo.TafsilLink.sourceId)
INNER JOIN
dbo.Tafsil
ON
(
dbo.TafsilLink.targetId = dbo.Tafsil.id)
INNER JOIN
dbo.FinishProduct
ON
(
dbo.Tafsil.id = dbo.FinishProduct.tafsilId)
INNER JOIN
dbo.Supplier
ON
(
dbo.FinishProduct.supplierId = dbo.Supplier.tafsilId)
WHERE
WarehouseSubType1.warehouseSubTypeId IN (1,4)
group by dbo.WarehouseProductQuantity.tafsilId
Have you tried a group by
SELECT SubType, SUM(qty) AS QtySum
GROUP BY SubType
Every grouped by column should be in your select. Note: for every column you group by it further sub divides the data
Update based on OP comment:
If you want other columns you need to do something like
SELECT s.WH_SubType,s.AvailQty, t.other_cols
from
(SELECT
dbo.WarehouseSubType1.name AS WH_SubType,
sum(dbo.WarehouseProductQuantity.actualQuantity - dbo.WarehouseProductQuantity.reservedQuantity) AS AvailQty
FROM
table
GROUP BY
dbo.WarehouseSubType1.name) s
left join table t on t.dbo.WarehouseSubType1.name = s.WH_SubType;
For reference see this question: How do I use "group by" with three columns of data?
UPDATE 2:
SELECT
dbo.WarehouseType.name AS Section,
dbo.WarehouseSubType.name AS WH_Type,
dbo.WarehouseSubType1.name AS WH_SubType,
dbo.Branch.name AS Branch,
SumTable.AvailQty,
SumTable.Tafsil,
dbo.Tafsil.description AS Product_Name
FROM
dbo.WarehouseSubType
INNER JOIN
dbo.WarehouseType
ON
(
dbo.WarehouseSubType.warehouseTypeId = dbo.WarehouseType.id)
INNER JOIN
dbo.WarehouseSubType1
ON
(
dbo.WarehouseSubType.id = dbo.WarehouseSubType1.warehouseSubTypeId)
INNER JOIN
dbo.Warehouse
ON
(
dbo.WarehouseSubType1.id = dbo.Warehouse.warehouseSubType1Id)
INNER JOIN
dbo.Branch
ON
(
dbo.Warehouse.branchId = dbo.Branch.id)
INNER JOIN
dbo.WarehouseProductQuantity
ON
(
dbo.Warehouse.id = dbo.WarehouseProductQuantity.warehouseId)
INNER JOIN
dbo.TafsilLink
ON
(
dbo.WarehouseProductQuantity.tafsilId = dbo.TafsilLink.sourceId)
INNER JOIN
dbo.Tafsil
ON
(
dbo.TafsilLink.targetId = dbo.Tafsil.id)
INNER JOIN
dbo.FinishProduct
ON
(
dbo.Tafsil.id = dbo.FinishProduct.tafsilId)
LEFT JOIN (SELECT
sum(dbo.WarehouseProductQuantity.actualQuantity - dbo.WarehouseProductQuantity.reservedQuantity) AS AvailQty,
dbo.WarehouseProductQuantity.tafsilId AS Tafsil
FROM
dbo.WarehouseProductQuantity
group by dbo.WarehouseProductQuantity.tafsilId) SumTable on dbo.Tafsil.id = SumTable.Tafsil
WHERE
WarehouseSubType1.warehouseSubTypeId IN (1,4)
You need to do something like
SELECT SUM(AvailQty), ... FROM ... WHERE ... GROUP BY WH_SubType
http://www.w3schools.com/sql/sql_func_sum.asp
http://www.w3schools.com/sql/sql_groupby.asp