I have two tables table1 and table2. Each table contains a column with itemPrice. I need to add the two columns together.
The SQL query below returns the correct SUM.
SELECT SUM(item1+ item2) FROM
(select SUM(t1.itemPrice) item1 from table1 t1 WHERE t1.userid=='jonh') tableA
CROSS JOIN
(select SUM(t2.itemPrice) item2 from table2 t2 WHERE t1.userid=='jonh') tableB
I am not been lazy but the above query has so many SUM functions that I don't know where to start to write LINQ queries.
Can anyone help?
Ceci,
Hopefully this will give you what you want...
from f in (
from x in ( from t1 in Table1
where t1.Userid.Equals("John")
select new { Userid = t1.Userid }
).Distinct()
select new { item1 = ( from z in Table1
where z.Userid.Equals("John")
select z.ItemPrice ).Sum() ??0 ,
item2 = ( from z in Table2
where z.Userid.Equals("John")
select z.ItemPrice ).Sum() ??0 }
) select new { total = f.item1 + f.item2 }
In the case where there are no records for "john" in one table, it will bring back a 0 and sum up the other tables.
hope this helps.
Related
I am looking for a way to perform this query in DQL :
SELECT
t0_.product, t0_.creation_date, t0_.id pvId,
t0_.product AS product,
t0_.file_path AS file_path_3,
t0_.product AS product_11
FROM table0 t0_
join (
select max(creation_date) as createdDate, id, product
from table0
group by product
) t0b on (t0b.createdDate = t0_.creation_date and t0_.product = t0b.product)
LEFT JOIN table1 t1_ ON t0_.product = t1_.id
LEFT JOIN table2 t2_ ON t1_.id = t2_.otherId
LEFT JOIN table3 t3_ ON t2_.id = t3_.otherId
LEFT JOIN table4 t4_ ON t2_.id = t4_.otherId
LEFT JOIN table5 t5_ ON t4_.id = t5_.otherId
LEFT JOIN table6 t6_ ON t4_.id = t6_.otherId
LEFT JOIN table7 t7_ ON t6_.id = t7_.otherId
WHERE t6_.id = :identifier
GROUP BY p0_.product;
explication : I have in table 'table0' several rows linked to table 'table1', I want to keep only the most recent one (column creation_date)
tableA.ID
tableA.propertyTableB.ID
tableA.createdAt
1
1
-4days
2
3
-3days
3
1
yesterday
4
3
today
5
1
today
6
1
-5 days
7
2
yesterday
8
2
today
I need to keep the rows : 4, 5, 8,
I need to get a queryBuilder object in order to do other operations behind it.
Has anyone already succeeded in this feat?
Thanks in advance <3
I need to keep the most recents rows from tableA related to tableB
EDIT : Maybe I find another way
no Select in the Join, just another JOIN like this :
FROM table0 t0
LEFT JOIN table0Bis AS t0B ON t0B.identifier = t0.identifier AND t0B.creation_date > t0.creation_date
LEFT JOIN table1 t1 ON t1.id = t0.foo
LEFT JOIN table2 t2 ON t1.id = t2.bar
LEFT JOIN table3 t3 ON t2.id = t3.rab
LEFT JOIN table4 t4 ON t2.id = t4.oof
LEFT JOIN table5 t5 ON t5.id = t4.toto
LEFT JOIN table6 t6 ON t5.id = t6.lorem
LEFT JOIN table7 t7 ON t6.id = t7.ipsum
where t7.id = :id AND t0B.creation_date IS NULL
group by t0.product;
$queryBuilder = $this->createQueryBuilder('t0');
$queryBuilder->leftJoin(
'App\Entity\Table0',
't0b',
Join::WITH,
't0b.product = t0.product AND t0b.creationDate > t0.creationDate')
->leftJoin('t0.foo', 't1')
->leftJoin('t1.bar', 't2')
->leftJoin('t2.bar', 't3')
->leftJoin('t3.rab', 't4')
->andWhere('t4.id = :ident')->setParameter('ident', $user->getId())
->andWhere('t0b.creationDate IS NULL')
->groupBy('t0.id', 't0.foobar')
->orderBy('t0.foobar', 'DESC')
;
I am working on sql server I have two tables and I need to return records from the left table which are not found in the right table for that I am using left join like below query,
select #MID=MID,#MName=Name,#PID=PID,#PName=PName,#DID=DID from #CompanyDataInfo where id=#MCount
insert into #temp SELECT Top(1) f.Name,f.PID,f.PName,v.* FROM #CompanyDataInfo f
left join Employee v on v.Id=f.ID and v.DID=f.DID
where v.Id =#MID and v.DId = #DId and v.PId = #PId and v.CId =#CId and DATE_TIME between DATEADD(minute,-555,GETDATE()) and GETDATE() order by DATE_TIME desc
Result should be all rows from #CompanyDataInfo table while no record found in Employee table for related ID, I googled and use "v.Id is null" but not getting expected result
Is there any solution greatly appriciable
Thanks In advance
Your query is not using left join in correct way. You are using your right table reference in where clause. I try to correct it below but I don't have full information about your table schema. Please try this-
select
#MID = MID,
#MName = Name,
#PID = PID,
#PName = PName,
#DID = DID
from #CompanyDataInfo
where id = #MCount
insert into #temp
select
f.Name,
f.PID,
f.PName,
v.*
from #CompanyDataInfo f
left join Employee v on v.Id=f.ID and v.DID=f.DID
where f.Id = #MID and
f.DId = #DId and
f.PId = #PId and
f.CId = #CId and
f.DATE_TIME between DATEADD(minute,-555,GETDATE()) and GETDATE() and
v.Id is null
order by f.DATE_TIME desc
Add ...and v.Id is null to your where clause.
I have multiple tables in a join and every table has a column ID. So in the resultig join there are a lot of ID columns. How I can access a specific ID column with the criteria API?
ParameterExpression<A> idParam = criteriaBuilder.parameter(A.class, PARAM_NAME);
Subquery<B> sq = query.subquery(B.class);
Root<B> root = sq.from(B.class);
Join<C, D> joinTogether = root.join("memberX").join("memberY");
sq.select(root);
sq.where(criteriaBuilder.and(criteriaBuilder.equal(joinTogether.get("id"), idParam), criteriaBuilder.equal(parentQuery.get("id"), root.get("id"))));
The problem is, that in the resulting SQL contains
SELECT 1 FROM E t6, B t5, C t4, D t3 WHERE ((( = paramName) AND (t0.ID = t5.ID)) AND (((t6.memberZ = t5.ID) AND (t4.ID = t6.memberX)) AND (t3.ID = t4.memberY))))
The table E (t6) is an additional join table between table B and C, t0 is the reference to the parent query. Instead t3.id = :paramName EclipseLink creates nothing just before the first equal-sign (paramName is the content of the constant PARAM_NAME). My idea is, that the "id" column could reference all tables and EclipseLink can not decide, which table I mean.
How I can change that?
Thank you
André
I have three tables. I have to retrieve the data using Linq statement. My three table names are A,B,C. I connected join for connecting two tables A and B based on the id's like:
select ol, fN, LN, ci, co
from member
join details
on member_id = details_id
where details_id in
(select contacts_id from contacts where
contacts_id1 = 1 and contacts_usr_id = 1)
I am able to write the query up to the where condition, how can I write the query for the inner while condition?
you can try this:
var idlist = (from tbl in table3
where tbl.usr_id == 1 && tbl.contacts_id == 1
select tbl.contacts_id ).ToList();
var x = from A in table1
from B in table2 where A.user_id == B.user_id
&& idlist.Contains(A.user_id)
select new { a = A.a, b = A.b, c = A.c, d = B.d, e = B.e };
check and let me know if that work.
Try flipping the query upside down. How about the following:
var query =
from t3 in table3
where t3.user_id = 1 && t3.contacts_id = 1
join t2 in table2 on t3.contacts_id equals t2.usr_id
join t1 in table1 on t2.usr_id equals t1.userid
select new {t2.a, t2.b, t2.c, t1.d, t1.e};
My Stored Procedure takes a very long time to execute.
Can anyone suggest me what I can do to speed up the stored procedure, apart from using some good practices for writing down the queries.
I've heard about creating indices, but I'm not sure what are they.
Please suggest all the best ways to speed up my queries.
Thanks
CREATE PROCEDURE [dbo].[usp_GetAlternates]
(
#NNumber CHAR(11) ,
#pid INT ,
#pbmid INT
)
AS
BEGIN
TRUNCATE TABLE TempTherapeuticAlt
INSERT INTO TempTherapeuticAlt
SELECT NULL AS MedicationID ,
PR.ePrescribingName AS MedicationName ,
U.Strength AS MedicationStrength ,
FRM.FormName AS MedicationForm ,
PR.DEAClassificationID AS DEASchedule ,
NULL AS NDCNumber
FROM Product PR
JOIN ( SELECT MP.MarketedProductID
FROM table2 TCTSP
JOIN table3 MP ON MP.SpecificProductID = TCTSP.SpecificProductID
JOIN ( SELECT TCTSP.TherapeuticConceptTreeID
FROM table3 MP
JOIN table2 TCTSP ON MP.SpecificProductID = TCTSP.SpecificProductID
JOIN ( SELECT
PR.MarketedProductID
FROM
table4 PA
JOIN Product PR ON PA.ProductID = PR.ProductID
WHERE
PA.NDC11 = #NNumber
) PAPA ON MP.MarketedProductID = PAPA.MarketedProductID
) xxx ON TCTSP.TherapeuticConceptTreeID = xxx.TherapeuticConceptTreeID
) MPI ON PR.MarketedProductID = MPI.MarketedProductID
JOIN ( SELECT P.ProductID ,
O.Strength ,
O.Unit
FROM Product AS P
INNER JOIN table3 AS M ON P.MarketedProductID = M.MarketedProductID
INNER JOIN table5 AS S ON M.SpecificProductID = S.SpecificProductID
LEFT OUTER JOIN table6 AS O ON S.SpecificProductID = O.SpecificProductID
GROUP BY P.ProductID ,
O.Strength ,
O.Unit
) U ON PR.ProductID = U.ProductID
JOIN ( SELECT PA.ProductID ,
S.ScriptFormID ,
F.Code AS NCPDPScriptFormCode ,
S.FormName
FROM table4 AS PA
INNER JOIN table7 AS S ON PA.NCPDPScriptFormCode = S.NCPDPScriptFormCode
INNER JOIN table8 AS F ON S.FormName = F.FormName
GROUP BY PA.ProductID ,
S.ScriptFormID ,
F.Code ,
S.FormName
) FRM ON PR.ProductID = FRM.ProductID
GROUP BY PR.ePrescribingName ,
U.Strength ,
FRM.FormName ,
PR.DEAClassificationID
ORDER BY pr.ePrescribingName
SELECT LL.ProductID AS MedicationID ,
temp.MedicationName ,
temp.MedicationStrength ,
temp.MedicationForm ,
temp.DEASchedule ,
temp.NDCNumber ,
fs.[ReturnFormulary] AS FormularyStatus ,
copay.CopaTier ,
copay.FirstCopayTerm ,
copay.FlatCopayAmount ,
copay.PercentageCopay
FROM TempTherapeuticAlt temp
OUTER APPLY ( SELECT TOP 1
ProductID
FROM Product
WHERE ePrescribingName = temp.MedicationName
) AS LL
OUTER APPLY function1(#pid, LL.ProductID, #pbmid) AS fs
OUTER APPLY function2(LL.ProductID, #pbmid) AS copay
ORDER BY LL.ProductID
TRUNCATE TABLE TempTherapeuticAlt
END
GO
Here are a few:
You should have indexes for every column in a WHERE clause. See
your SQL language for how to do it.
Learn how to EXPLAIN PLAN and see what's slow.
Stored procedure languages are functional, not set based. Use JOIN and don't fall into the (n+1) query/iteration trap.
Understand how using certain functions force you to TABLE SCAN in a WHERE clause.