I was fiddling with XML AUTO and XML RAW to see how they behave. The test db is AdventureWorks2012.
SELECT TOP 20 Cust.CustomerID AS C1,
Cust.TerritoryID,
OrderHeader.CustomerID AS C2,
OrderHeader.SalesOrderID,
OrderHeader.Status
FROM Sales.Customer Cust
INNER JOIN Sales.SalesOrderHeader OrderHeader
ON Cust.CustomerID = OrderHeader.CustomerID
FOR XML RAW('MyRow'), ELEMENTS
XML RAW's simplicity just puts every element in the same level
<MyRow>
<C1>29825</C1>
<TerritoryID>5</TerritoryID>
<C2>29825</C2>
<SalesOrderID>43659</SalesOrderID>
<Status>5</Status>
While for XML AUTO
SELECT TOP 20 Cust.CustomerID,
Cust.TerritoryID,
OrderHeader.CustomerID,
OrderHeader.SalesOrderID,
OrderHeader.Status
FROM Sales.Customer Cust
INNER JOIN Sales.SalesOrderHeader OrderHeader
ON Cust.CustomerID = OrderHeader.CustomerID
FOR XML AUTO, ELEMENTS
I have
<Cust>
<CustomerID>29825</CustomerID>
<TerritoryID>5</TerritoryID>
<OrderHeader>
<CustomerID>29825</CustomerID>
<SalesOrderID>43659</SalesOrderID>
<Status>5</Status>
</OrderHeader>
</Cust>
XML AUTO decides to group all under Cust tag. How does it come to this conclusion that Cust somehow encloses and "at a higher level" than OrderHeader. Why does it decide to group all OrderHeader's columns under OrderHeader tag and not the same for Cust ? Before executing I thought that it would be
<Cust>
<CustomerID>29825</CustomerID>
<TerritoryID>5</TerritoryID>
</Cust>
<OrderHeader>
<CustomerID>29825</CustomerID>
<SalesOrderID>43659</SalesOrderID>
<Status>5</Status>
</OrderHeader>
Update
It's a hunch but I start to think SQL Server will take the table of the column first mentioned to be the outer tag,
For example,
SELECT TOP 20 OrderHeader.CustomerID,,
Cust.CustomerID,
Cust.TerritoryID,
OrderHeader.SalesOrderID,
OrderHeader.Status
Even when I mix the column order, it will still group columns of OrderHeader together, and Cust is a subgroup
<OrderHeader>
<CustomerID>29825</CustomerID>
<SalesOrderID>43659</SalesOrderID>
<Status>5</Status>
<Cust>
<CustomerID>29825</CustomerID>
<TerritoryID>5</TerritoryID>
</Cust>
</OrderHeader>
Related
First Left JOIN with 2 tables (project_reviews & project_review_remarks)
SELECT pr.review_id,client_name,improvement_areas, strengths
FROM project_reviews pr
LEFT JOIN project_review_remarks pra ON pr.review_id = pra.review_id
WHERE review_status IN ('COMPLETED')
ORDER BY review_date DESC;
Second Left JOIN with 2 tables (project_reviews & project_review_remarks)
SELECT pr.review_id, COUNT(pra.action_item_id) AS actions
FROM project_reviews pr
LEFT JOIN project_review_action_item pra ON pr.review_id = pra.review_id
GROUP BY pr.review_id;
In both the queries, project_reviews is a common table,
IN first Query is ONE-ONE relationship
IN second Query is ONE-MANY relationship (WHERE I COUNTED it many rows using group by)
I want to merge both queries into one query, because project_reviews is a common table with review ID and show the count of action_item into one table.
Just add these code to first query.
In select add COUNT(pra.action_item_id) AS actions.
Add LEFT JOIN project_review_action_item pra ON pr.review_id = pra.review_id. Make sure that your both LEFT JOIN tables has different alias as I have updated project_review_remarksprr.
Add GROUP BY with all columns from SELECT like GROUP BY pr.review_id, client_name, improvement_areas, strengths.
To GROUP BY with TEXT columns you can cast it to VARCHAR(MAX) or NVARCHAR(MAX) whichever you think appropriate.
Check complete query below.
SELECT pr.review_id,
client_name,
CAST(improvement_areas AS VARCHAR(MAX)) AS improvement_areas,
CAST(strengths AS VARCHAR(MAX)) AS strengths,
COUNT(pra.action_item_id) AS actions
FROM project_reviews pr
LEFT JOIN project_review_remarks prr
ON pr.review_id = prr.review_id
LEFT JOIN project_review_action_item pra
ON pr.review_id = pra.review_id
WHERE pr.review_status IN ('COMPLETED')
GROUP BY pr.review_id,
client_name,
CAST(improvement_areas AS VARCHAR(MAX)),
CAST(strengths AS VARCHAR(MAX))
ORDER BY review_date DESC;
I have 3 tables in that 2 tables are master table and 3rd is transaction table. i need to get count from transaction table for each value in other two table without loosing rows in mater table
i need result like below
Table layout for understanding
This is the code i have tried,
select s.status_name, e.machine_group_name, qty = COALESCE(COUNT(e.id),0)
from tbl_status s
left outer JOIN tbl_transaction as e ON e.status_name = s.status_name
group by e.machine_group_name, s.status_name
This is solution i have figured:
select m.machine_group_name, s.status_name, qty = COUNT(e.id) from
tbl_machine_group as m
cross join tbl_status as s
left outer join tbl_transaction as e on e.status_name = s.status_name
and e.machine_group_name = m.machine_group_name
group by m.machine_group_name, s.status_name
order by machine_group_name
select
MC_Group_Name
,Status_Name
,count(1) as [Count of Transaction]
from
tbl_Transaction tbl_3
left join tbl_Machine_Group tbl_1
on tbl_3.MC_Group_Name = tbl_1.MC_Group_Name
left join tbl_Status tbl_2
on tbl_3.Status_Name = tbl_2.Status_Name
group by
MC_Group_Name
,Status_Name
I have this query in MySQL:
SELECT pr.*, pr7.value AS `room_price_high`
FROM `jos_hp_properties` pr
LEFT OUTER JOIN `jos_hp_properties2` pr7 ON pr7.property=pr.id
WHERE pr7.field=23
The jos_hp_properties table has 27 rows but the query only returns one. Based on this question I think it may be because of the WHERE clause. The jos_hp_properties2 table has fields id, property, field, value, where field is a foreign key to a third table (which I don't need to get data from).
Is there a way to select all the rows from the first table, including the value from table #2 where the field is 23 (or NULL if there is no field 23)?
Sure. Move the WHERE condition to the JOIN:
SELECT pr.*, pr7.value AS `room_price_high`
FROM `jos_hp_properties` pr
LEFT JOIN `jos_hp_properties2` pr7
ON pr7.property=pr.id
AND
pr7.field=23
You must place the pr7 criteria in the join, not in the where clause. The where clause works on the entire result set AFTER the join has been performed.
SELECT pr.*, pr7.value AS `room_price_high`
FROM `jos_hp_properties` pr
LEFT OUTER JOIN `jos_hp_properties2` pr7 ON pr7.property=pr.id and pr7.field=23
Try this:
SELECT pr.*, pr7.value AS `room_price_high`
FROM `jos_hp_properties` pr
LEFT OUTER JOIN `jos_hp_properties2` pr7 ON pr7.property=pr.id
WHERE (pr7.field=23 OR pr7.field is null)
You can also use a CTE (Common Table Expression) to do the select, then use the CTE to do the left join..
wrc (parentid, childid) as (
select parentid, childid
from placechild
where relationshipid in (select id from placerelationship where relationship = 'Winter Region Capital')
),
stw (cnid, coid, capid, st_or_te, sid, scid,wcid) as (
select s.cnid, s.coid, s.capid, s.st_or_te, s.sid, s.scid, w.childid
from stcap s
left join wrc w
on s.sid = w.parentid
)
select * from stw
I am retrieving data from table ProductionReportMetrics where I have column NetRate_QuoteID. Then to that result set I need to get Description column.
And in order to get a Description column, I need to join 3 tables:
NetRate_Quote_Insur_Quote
NetRate_Quote_Insur_Quote_Locat
NetRate_Quote_Insur_Quote_Locat_Liabi
But after that my premium is completely off.
What am I doing wrong here?
SELECT QLL.Description,
QLL.ClassCode,
prm.NetRate_QuoteID,
QL.LocationID,
ISNULL(SUM(premium),0) AS NetWrittenPremium,
MONTH(prm.EffectiveDate) AS EffMonth
FROM ProductionReportMetrics prm
LEFT JOIN NetRate_Quote_Insur_Quote Q
ON prm.NetRate_QuoteID = Q.QuoteID
INNER JOIN NetRate_Quote_Insur_Quote_Locat QL
ON Q.QuoteID = QL.QuoteID
INNER JOIN NetRate_Quote_Insur_Quote_Locat_Liabi QLL
ON QL.LocationID = QLL.LocationID
WHERE YEAR(prm.EffectiveDate) = 2016 AND
CompanyLine = 'Ironshore Insurance Company'
GROUP BY MONTH(prm.EffectiveDate),
QLL.Description,
QLL.ClassCode,
prm.NetRate_QuoteID,
QL.LocationID
I think the problem in this table:
What Am I missing in this Query?
select
ClassCode,
QLL.Description,
sum(Premium)
from ProductionReportMetrics prm
LEFT JOIN NetRate_Quote_Insur_Quote Q ON prm.NetRate_QuoteID = Q.QuoteID
LEFT JOIN NetRate_Quote_Insur_Quote_Locat QL ON Q.QuoteID = QL.QuoteID
LEFT JOIN
(SELECT * FROM NetRate_Quote_Insur_Quote_Locat_Liabi nqI
JOIN ( SELECT LocationID, MAX(ClassCode)
FROM NetRate_Quote_Insur_Quote_Locat_Liabi GROUP BY LocationID ) nqA
ON nqA.LocationID = nqI.LocationID ) QLL ON QLL.LocationID = QL.LocationID
where Year(prm.EffectiveDate) = 2016 AND CompanyLine = 'Ironshore Insurance Company'
GROUP BY Q.QuoteID,QL.QuoteID,QL.LocationID
Now it says
Msg 8156, Level 16, State 1, Line 14
The column 'LocationID' was specified multiple times for 'QLL'.
It looks like DVT basically hit on the answer. The only reason you would get different amounts(i.e. duplicated rows) as a result of a join is that one of the joined tables is not a 1:1 relationship with the primary table.
I would suggest you do a quick check against those tables, looking for table counts.
--this should be your baseline count
SELECT COUNT(*)
FROM ProductionReportMetrics
GROUP BY MONTH(prm.EffectiveDate),
prm.NetRate_QuoteID
--this will be a check against the first joined table.
SELECT COUNT(*)
FROM NetRate_Quote_Insur_Quote Q
WHERE QuoteID IN
(SELECT NetRate_QuoteID
FROM ProductionReportMetrics
GROUP BY MONTH(prm.EffectiveDate),
prm.NetRate_QuoteID)
Basically you will want to do a similar check against each of your joined tables. If any of the joined tables are part of the grouping statement, make sure they are also in the grouping of the count check statement. Also make sure to alter the WHERE clause of the check count statement to use the join clause columns you were using.
Once you find a table that returns the incorrect number of rows, you will have your answer as to what table is causing the problem. Then you will just have to decide how to limit that table down to distinct rows(some type of aggregation).
This advice is really just to show you how to QA this particular query. Break it up into the smallest possible parts. In this case, we know that it is a join that is causing the problem, so take it one join at a time until you find the offender.
CREATE VIEW [dbo].[Payment_Transaction_vw]
AS
SELECT payment_trans_id,
Student_Info.student_fname,
Student_Info.student_lname,
Student_Info.ID_Number,
Trimester_Payment.deadline,
Transaction_Info.trans_name,
Payment_Transaction.amount,
Payment_Transaction.date_paid
FROM [Payment_Transaction]
INNER JOIN Student_Info
ON Payment_Transaction.student_info_id = Student_Info.student_info_id
INNER JOIN Trimester_Payment
ON Payment_Transaction.trimester_id = Trimester_Payment.trimester_id
INNER JOIN Transaction_Info
ON Payment_Transaction.trans_info_id = Transaction_Info.trans_info_id
GROUP BY ID_Number,trans_name;
That is my script to make a view in sql server in visual studio, I wanted to group the ID_Number & trans_name which have a repeating values in the table Payment_Transactions. I wanted that this ID_Number with the trans_name will only displayed once. I also want to sum up the amount paid for every ID_number with the same trans_name.
When using group by you want to make sure that any unique value will be aggregated or consolidated so that it can be displayed in one row. As it is right now, payment_trans_id (and others) are still unique and since you chose to display these the group by cannot be done.
What do you want to do with payment_trans_id, date_paid, amount ... all other columns really?
Example using MAX(), MIN() and AVG():
SELECT
MAX(payment_trans_id) AS payment_trans_id,
Transaction_Info.trans_name,
Student_Info.ID_Number,
AVG(Payment_Transaction.amount) AS amount,
MIN(Payment_Transaction.date_paid) AS date_paid
FROM [Payment_Transaction]
INNER JOIN Student_Info ON Payment_Transaction.student_info_id = Student_Info.student_info_id
INNER JOIN Trimester_Payment ON Payment_Transaction.trimester_id = Trimester_Payment.trimester_id
INNER JOIN Transaction_Info ON Payment_Transaction.trans_info_id = Transaction_Info.trans_info_id
GROUP BY ID_Number, trans_name;
For support in EF, perhaps this will be sufficient (perhaps not):
SELECT
ISNULL(MAX(payment_trans_id),0) AS Id,
Transaction_Info.trans_name,
Student_Info.ID_Number,
AVG(Payment_Transaction.amount) AS amount,
MIN(Payment_Transaction.date_paid) AS date_paid
FROM [Payment_Transaction]
INNER JOIN Student_Info ON Payment_Transaction.student_info_id = Student_Info.student_info_id
INNER JOIN Trimester_Payment ON Payment_Transaction.trimester_id = Trimester_Payment.trimester_id
INNER JOIN Transaction_Info ON Payment_Transaction.trans_info_id = Transaction_Info.trans_info_id
GROUP BY ID_Number, trans_name;
You have to aggregate columns that are not in group by clause.
As example, which one of date_paid (for payment_trans_id = 1 and 2) you want to return? 6/25/2015 or 5/6/2015? SQL server cant know, so you get multiple rows.