Joining Different Table Data

May 30, 2008



Dear all,

I have four different tables with three columns. The first two columns are equal for all tables. The third column is different:

Table I
COUNTRY | PRODUCT | SALES VALUE
AAA AAA 10
AAA AAB 10

Table II
COUNTRY | PRODUCT | SALES COST
AAA AAC 10


Table III
COUNTRY | PRODUCT | SALES MARGIN
AAB AAA 10

Table IV
COUNTRY | PRODUCT | SALES XXX
AAA AAA 5

What I would like to accomplish is to obtain a table where the records from these tables would be joined in a single table:

COUNTRY | PRODUCT | SALES VALUE | SALES COST | SALES MARGIN | SALES XXX
AAA AAA 10 0 0 5
AAA AAB 10 0 0 0
AAA AAC 0 10 0 0
AAB AAA 0 0 10 0

Can you advise me on what the best way to achieve this is? Thanks!

Kind regards,
Pedro Martins

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Apr 20, 2015

I run into a problem when asking to show a query of employee vacation days.

table 1:
column1  is dates
e.g.
2015-01-01
2015-01-02
2015-01-03 
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.
.
2015-12-31

table2:
employeeID
vacation_date
Tom
2015-01-03
Tom
2015-01-04
David
2015-01-04
John
2015-01-08
Mary
2015-01-012

My query output need to be:

2015-01-01
2015-01-02
2015-1-03
Tom
2015-01-04
Tom
2015-01-04
David
2015-01-05
2015-01-06
2015-01-07
2015-01-08
John
2015-01-09
2015-01-10
2015-01-11
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when i use left outer join, i only record one employee per date.

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companyID (FK)
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I am able to get the branch address at the moment with this code but I would like to get the company address as well using a single select statement.

Code:
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Join on RegionID Join on RegionID and City
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| | | | | |
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|________________| |_______________|
_______________ ________________ _______________
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Hi guys,

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Code:
TABLE A
==========
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1111 | 1
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NEW TABLE A
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LinkId int,
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LinkStatus varchar(50),
LinkName varchar(50)
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(
LinkId,
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INNER JOIN
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SELECT
LinkId,
LinkCategory,
LinkStatus,
LinkName
FROM
#TempTable


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======
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Extracting And Joining Header From Denormalized Table

Dec 1, 2005

Hello,I am currently working on a monthly load process with a datamart. Ioriginally designed the tables in a normalized fashion with the ideathat I would denormalize as needed once I got an idea of what theperformance was like. There were some performance problems, so thedecision was made to denormalize. Now the users are happy with thequery performance, but loading the tables is much more difficult.Specifically...There were two main tables, a header table and a line item table. Thesehave been combined into one table. For my loads I still receive them asseparate files though. The problem is that I might receive a line itemfor a header that began two months ago. When this happens I don't get aheader record in the current month's file - I just get the record inthe line items file. So now I have to join the header and line itemtables in my staging database to get the denormalized rows, but I alsomay have to get header information from my main denormalized table(~150 million rows). For simplicity I will only include the primarykeys and one other column to represent the rest of the row below. Thetables are actually very wide.Staging database:CREATE TABLE dbo.Claims (CLM_ID BIGINT NOT NULL,CLM_DATA VARCHAR(100) NULL )CREATE TABLE dbo.Claim_Lines (CLM_ID BIGINT NOT NULL,LN_NO SMALLINT NOT NULL,CLM_LN_DATA VARCHAR(100) NULL )Target database:CREATE TABLE dbo.Target (CLM_ID BIGINT NOT NULL,LN_NO SMALLINT NOT NULL,CLM_DATA VARCHAR(100) NULL,CLM_LN_DATA VARCHAR(100) NULL )I can either pull back all of the necessary header rows from the targettable to the claims table and then do one insert using a join betweenclaims and claim lines into the target table OR I can do one insertwith a join between claims and claim lines and then a second insertwith a join between claim lines and target for those lines that weren'talready added.Some things that I've tried:INSERT INTO Staging.dbo.Claims (CLM_ID, CLM_DATA)SELECT DISTINCT T.CLM_ID, T.CLM_DATAFROM Staging.dbo.Claim_Lines CLLEFT OUTER JOIN Staging.dbo.Claims C ON C.CLM_ID = CL.CLM_IDINNER JOIN Target.dbo.Target T ON T.CLM_ID = CL.CLM_IDWHERE C.CLM_ID IS NULLINSERT INTO Staging.dbo.Claims (CLM_ID, CLM_DATA)SELECT T.CLM_ID, T.CLM_DATAFROM Staging.dbo.Claim_Lines CLLEFT OUTER JOIN Staging.dbo.Claims C ON C.CLM_ID = CL.CLM_IDINNER JOIN Target.dbo.Target T ON T.CLM_ID = CL.CLM_IDWHERE C.CLM_ID IS NULLGROUP BY T.CLM_ID, T.CLM_DATAINSERT INTO Staging.dbo.Claims (CLM_ID, CLM_DATA)SELECT DISTINCT T.CLM_ID, T.CLM_DATAFROM Target.dbo.Target TINNER JOIN (SELECT CL.CLM_IDFROM Staging.dbo.Claim_Lines CLLEFT OUTER JOIN Staging.dbo.Claims C ON C.CLM_ID =CL.CLM_IDWHERE C.CLM_ID IS NULL) SQ ON SQ.CLM_ID = T.CLM_IDI've also used EXISTS and IN in various queries. No matter which methodI use, the query plans tend to want to do a clustered index scan on thetarget table (actually a partitioned view partitioned by year). Thenumber of headers that were in the target but not the header file thismonth was about 42K out of 1M.So.... any other ideas on how I can set up a query to get the distinctheaders from the denormalized table? Right now I'm considering usingworktables if I can't figure anything else out, but I don't know ifthat will really help me much either.I'm not looking for a definitive answer here, just some ideas that Ican try.Thanks,-Tom.

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Transact SQL :: Retrieve Values Instead Of Joining To Same Table 5x

Jun 2, 2015

I have a table (can't change the schema of it since it is part of an off the shelf app ) that has columns for individuals which I need to extract several pieces of information, essentially Phone, Email Address, etc.  See U1 - U6

What is a better way to return this information rather than multiple joins?

Select
[AccountNumber]
,a.[AccountId]
,[Name]
,[new_LocationID]
,[ws_name]
,[new_BillingManageruserName]
,[new_AreaServiceManName]

[Code] ....

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Performance Of Joining Two Table In Diffrent Databse

Nov 19, 2007



I have two databses SIS and SIS_Pro. Users tables should be used in both of them because I have some relations between this table with other table in SIS and SIS_Pro. Users in SIS only have one column and it is the UserId which is the primary Key in both of them, but in SIS_Pro Users table have Firstname Lastname and... now. In my program I need some informatin from SIS and some from SIS_Pro so I create a view which is joining of forexample exam in SIS and Users in SIS_Parnian, becuase I don't have the firstname and lastname in a Users table which is in SIS_Pro databse.Does it reduce the performance?is it better to copy datas which are in Users in SIS to Users in SIS_Pro( I mean all columns firstname, lastname ,,.....)

Sincerely

Kianoosh

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Query Optimization - Joining A View And A Table

Apr 5, 2006

I am having the following situation - there is a view that aggregates and computes some values and a table that I need the details from so I join them filtering on the primary key of the table. The execution plan shows that the view is executed without any filtering so it returns 140 000 rows which are later filtered by the join operation a hash table match. This hash table match takes 47% of the query cost. I tried selecting the same view but directly giving a where clause without the join €“ it gave a completely different execution plan. Using the second method is in at least 4 folds faster and is going only through Index Seeks and nested loops.
So I tried modifying the query with third version. It gave almost the same execution plan as the version 1 with the join operation.
It seams that by giving the where clause directly the execution plan chosen by the query optimizer is completely different €“ it filters the view and the results from it and returns it at the same time, in contrast to the first version where the view is executed and return and later filtered. Is it possible to change the query some how so that it filters the view before been joined to the table.

Any suggestions will be appreciated greatly
Stoil Pankov

"vHCItemLimitUsed" - this is the view
"tHCContractInsured" - this is the table
"ixHCContractInsuredID" - is the primary key of the table

Here is a simple representation of the effect:

Version 1:
select *
from dbo.vHCItemLimitUsed
inner join tHCContractInsured on
vHCItemLimitUsed.ixHCContractInsuredID = tHCContractInsured.ixHCContractInsuredID
where tHCContractInsured.ixHCContractInsuredID in (9012,9013,9014,9015)


Version 2:
select *
from vHCItemLimitUsed
where ixHCContractInsuredID in (9012,9013,9014,9015)

Version 3:
select *
from dbo.vHCItemLimitUsed
where ixHCContractInsuredID in
(select ixHCContractInsuredID
from tHCContractInsured
where ixHCContractInsuredID in (9012,9013,9014,9015))

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