Join Database

May 9, 2001

Good Mornig my fryends, my english is more or less but....
I need help, I need commit transacions between TWO databases maintenance referencial integrity.

example:(sql server 2000)

DATABASE 1 <------------------ODBC/BDE(Delphi 5.0)--------DATABASE 2
TABLE 1 TABLE 2
*colunm a <--Query(ODBC(SELECT(*),UPDATE(set),DELETE)----*colunm b
colunm a1 colunm b1

Enforce relationship for INSERT and UPDATES
Cascade Updated related Fields
Cascade Delete related Fields

Why insert the data containg in DATABASE 1.TABLE 1.COLUNM A in
DATABASE 2.TABLE 2.COLUNM B.

Whait for solucions.
" good bless You "

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Can Any One Tell Me The Difference Between Cross Join, Inner Join And Outer Join In Laymans Language

Apr 30, 2008

Hello

Can any one tell me the difference between Cross Join, inner join and outer join in laymans language

by just taking examples of two tables such as Customers and Customer Addresses


Thank You

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Apr 8, 1999

Is it possible to create a join between two SQL Server DB's on the same server? What is the syntax?

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Feb 9, 2006

Hi,
anyone could help me on how to do the inner join of two table from two different database. Below is my scripts:
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Dim sqlCommand2 As New SqlCommand("", SqlConnection1)
Dim sqlconnection2 As New SqlConnection(ConfigurationSettings.AppSettings("smDSN"))
Dim sqlCommandSM2 as new sqlCommand("", sqlconnectionSM2)
Sub Page_Load(Source as Object, E as EventArgs)
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............................
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Ann123 
 

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Jan 20, 2000

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Aug 2, 2004

When you make a join, it may look something like this:

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Products.CategoryID = Categories.CategoryID

In this query you use 'Products.CategoryID = Categories.CategoryID' to give the relation between the two tables. But if you already added the relationships to your database, this should be known.

My question is, why is it necessary to add the relation in the query when the relationships are already in the database? Is it somehow possible to ommit the relation in the query and make use of the relationships in the database.

Kind regards,
Iwan Rotteveel

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Sep 14, 2006

sql server 2005
sql server mangement studio

Hi I am using the databse diagrammer to create a database.
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any help appreciated.

B

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Feb 2, 2007

I have a very simple Join Query like
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Dec 9, 2007

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May 1, 2008



Hello I have a Source database and a Target database.

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Please can some one write a sql query for this.

i gues its something like

select tablesource.col,tabledest.col
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Ok One more question is where do I execute this Query in which database.. IF at all its possible to this.

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Jun 25, 2007

Hi guys,

Just trying to select a set of Articles from a SQL Server Database. The Articles all have a Category ID which is stored in another table (as an Article could be in more than one Category). I want to select the Top 3 Articles in a Category. At the moment I have as my SQL;

"SELECT TOP 3 f.ArticleID, f.Heading, f.Summary, f.WrittenDate, f.ArticleURL FROM feedTable f LEFT JOIN Categories c ON f.ArticleID = c.ArticleID WHERE c.CategoryID=" + CategoryID + " AND c.ArticleID<>" + id + " ORDER BY c.CategoryID"

Which seems to work to an extent in that I do get three articles in the same Category appearing. However, there are sometimes duplicates appearing, so I need to incorporate a DISTINCT clause to the above. I'm not sure where to put this in though. Any ideas?

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Apr 26, 2013

I need to extract from a database of an association, the name of the associate and its last paid share, but after a day trying I simply cannot extract that data.

The table senhas represents the shares, the table associados the associate data and senhas_associados, represents the shares paid by an associate, as it was a many to many relationship.

To query this, I'm trying to query the share with the maximum id (senha) which is in seassoc_senha_id in senhas_associados which represents a paid share.

Here's what I've tried so far:

Firstly, I've tried this statement, the output is the required, but it doesn't show associates who haven't paid any share which is needed (no records in senhas_associados):

SELECT assoc_nome, senha_desig
FROM associados, senhas, senhas_associados
WHERE assoc_id = seassoc_assoc_id
AND seassoc_senha_id = senha_id
AND seassoc_senha_id IN (SELECT max(seassoc_senha_id)
FROM senhas, senhas_associados
WHERE seassoc_senha_id = senha_id
AND seassoc_assoc_id = assoc_id)

the output:
assoc_nome senha_desig
Carlos CostaMaio
Rodrigo Abril

I've even tried adding this:
SELECT assoc_nome, senha_desig
FROM associados, senhas, senhas_associados
WHERE assoc_id = seassoc_assoc_id
AND seassoc_senha_id = senha_id
AND seassoc_senha_id IN (SELECT max(seassoc_senha_id)
FROM senhas, senhas_associados
WHERE seassoc_senha_id = senha_id
AND seassoc_assoc_id = assoc_id) OR senha_desig is null

To no avail, the output was the same.

Then, I've changed the "tactic" and went to left join:
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FROM associados
LEFT JOIN senhas_associados ON associados.assoc_id = senhas_associados.seassoc_assoc_id
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Carlos CostaAbril
Carlos CostaJaneiro
Carlos CostaFevereiro
Carlos CostaMaio
Rodrigo Janeiro
Rodrigo Fevereiro
Rodrigo Abril
Pedro SoaresNULL

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I've attached the relational model of the involved tables.

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I have two databases with different collation sequences, let them be called A (SQL_Latin1_General_CI_AS) and B (Latin1_General_CI_AS). Now I need to join between the two (including through temp tables with server collation being Latin1_General_CI_AS). In order to get rid of the errors when trying to do so I changed all my statements in the WHERE and ON clauses to

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Error 602: ... execute DBCC CHECKTABLE in sysindexes

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Jan 25, 2011

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Here is an example of what i am doing

DECLARE @Participants XML
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<Employees EmpID="1" EmpName="abcd" />
<Employees EmpID="2" EmpName="efgh" />
</ArrayOfEmployees >'

SELECT Participants.Node.value('@EmpID', 'INT') AS EmployeeID,
Participants.Node.value('@EmpName', 'VARCHAR(50)') AS EmployeeName
FROM
@Participants.nodes('/ArrayOfEmployees /Employees ') Participants (Node)

the above query produces the following result

EmployeeID EmployeeName
--------------- -----------
1 abcd
2 efgh

How do I join the data coming out from the above query with another table in the database, for example Employee in this case

i.e. somewhat like this (note the following query does not perform the join correctly)

SELECT Participants.Node.value('@EmpID', 'INT') AS EmployeeID,
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FROM
@Participants.nodes('/ArrayOfEmployees /Employees ') Participants (Node)
INNER JOIN
Employee EMP ON EmployeeID = EMP .EmployeeID

My desired output after the join would be

EmployeeID EmployeeName Email Home Address
--------------- ----------- --------------- -----------
1 abcd abcd@abcd.com New York
2 efgh efgh@efgh.com Austin

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Apr 17, 2007

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Jun 21, 2007

Hi,

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If not I was thinking of linking the table into the other database.

TIA,
Darren

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May 22, 2015

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Oct 8, 2015

I was writing a query using both left outer join and inner join.  And the query was ....

SELECT
        S.companyname AS supplier, S.country,P.productid, P.productname, P.unitprice,C.categoryname
FROM
        Production.Suppliers AS S LEFT OUTER JOIN
        (Production.Products AS P
         INNER JOIN Production.Categories AS C

[code]....

However ,the result that i got was correct.But when i did  the same query using the left outer join in both the cases

i.e..

SELECT
        S.companyname AS supplier, S.country,P.productid, P.productname, P.unitprice,C.categoryname
FROM
        Production.Suppliers AS S LEFT OUTER JOIN
(Production.Products AS P
LEFT OUTER JOIN Production.Categories AS C
ON C.categoryid = P.categoryid)
ON
S.supplierid = P.supplierid
WHERE
S.country = N'Japan';

The result i got was same,i.e

supplier     country    productid    productname     unitprice    categorynameSupplier QOVFD     Japan     9     Product AOZBW    97.00     Meat/PoultrySupplier QOVFD    Japan   10     Product YHXGE     31.00     SeafoodSupplier QOVFD     Japan   74     Product BKAZJ    10.00     ProduceSupplier QWUSF     Japan    13     Product POXFU     6.00     SeafoodSupplier QWUSF     Japan     14     Product PWCJB     23.25     ProduceSupplier QWUSF    Japan     15    Product KSZOI     15.50    CondimentsSupplier XYZ     Japan     NULL     NULL     NULL     NULLSupplier XYZ     Japan     NULL     NULL     NULL     NULL

and this time also i got the same result.My question is that is there any specific reason to use inner join when join the third table and not the left outer join.

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Dec 23, 2014

I have two select statements, in between select statement taking UNION ALL . I need to avoid the error

Warning: The join order has been enforced because a local join hint is used.

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Aug 10, 2007

Scenario:

OLEDB source 1
SELECT ...
,[MANUAL DCD ID] <-- this column set to sort order = 1
...
FROM [dbo].[XLSDCI] ORDER BY [MANUAL DCD ID] ASC


OLEDB source 2
SELECT ...
,[Bo Tkt Num] <-- this column set to sort order = 1
...
FROM ....[dbo].[FFFenics] ORDER BY [Bo Tkt Num] ASC

These two tasks are followed immediately by a MERGE JOIN

All columns in source1 are ticked, all column in source2 are ticked, join key is shown above.
join type is left outer join (source 1 -> source 2)

result of source1 (..dcd column)
...
4-400-8000119
4-400-8000120
4-400-8000121
4-400-8000122 <--row not joining
4-400-8000123
4-400-8000124
...


result of source2 (..tkt num column)
...
4-400-1000118
4-400-1000119
4-400-1000120
4-400-1000121
4-400-1000122 <--row not joining
4-400-1000123
4-400-1000124
4-400-1000125
...

All other rows are joining as expected.
Why is it failing for this one row?

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Apr 14, 2015

I'm having trouble with a multi-table JOIN statement with more than one JOIN statement.

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The carid (primary key) and carmodelname belong to the Cars table.
The makeid and orderdate belong to the OrderDetails table.
The productname and carcategory belong to the Product table.

The number of rows returned should be the same as the number of rows in OrderDetails.

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Aug 9, 2013

Why would I use a left join instead of a inner join when the columns entered within the SELECT command determine what is displayed from the query results?

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Jun 5, 2006

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Why Does My Query Timeout Unless Force Join To Hash Join?

Jul 25, 2007

I'm using SQL Server 2005.



A piece of software I wrote starting timing out on a query that left outer joins a table to a view. Both the table and view have approximately the same number of rows (about 170000).



The table has 2 very similar columns, one is a varchar(1) and another is varchar(100). Neither are included in any index and beyond the size difference, the columns have the same properties. One of the employees here uses the varchar(1) column (called miscsearch) to tag large sets of rows to perform some action on. In this case, he had set 9000 rows miscsearch value to "g". The query then should join the table and view for all rows where miscsearch is set to g in the table. This query takes at least 20 minutes to run (I stopped it at this point).

If I remove the "where" clause and join all rows in the two tables, the query completes in about 20 seconds. If set the varchar(100) column (called descrip) to "g" for the same rows set via miscsearch, the query completes in about 20 seconds.



If I force the join type to a hash join, the query completes using miscsearch in about 30 seconds.



So, this works:

SELECT di.File_No, prevPlacements, balance,'NOT PLACED' as status FROM Info di LEFT OUTER HASH JOIN View_PP pp ON di.ram_file_no = pp.file_no WHERE miscsearch = 'g' ORDER BY balance DESC



and this works:

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But this does't:

SELECT di.File_No, prevPlacements, balance,'NOT PLACED' as status FROM Info di LEFT OUTER JOIN View_PP pp ON di.ram_file_no = pp.file_no WHERE miscsearch = 'g' ORDER BY balance DESC



What should I be looking for here to understand why this is happening?



Thanks,

john















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Page 2 - Within The INNER JOIN, How To Limit The Row To 1 Row Inside The INNER JOIN?

Apr 24, 2007

Awesome! I don't alway get the email notification of whoever reply to the posting. I think it only work after I log off of the forum.

Scott

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Dec 24, 2013

We are trying to migrate from sql 2005 to 2012. I am changing one of the implicit join to explicit join. As soon as I change the join, the number of rows returned are fewer than before.

Below is my Implict join query

INSERT #RIF_TEMP1 (rf1_row_no,rf1_rif, rf1_key_id_no, rf1_last_date, rf1_start_date)
SELECT currow.rf0_row_no, currow.rf0_rif, currow.rf0_key_id_no, prevrow.rf0_start_date, currow.rf0_start_date
FROM #RIF_TEMP0 currow , #RIF_TEMP0 prevrow

[Code] ....

and below is explict join query

INSERT #RIF_TEMP1 (rf1_row_no,rf1_rif, rf1_key_id_no, rf1_last_date, rf1_start_date)
SELECT currow.rf0_row_no, currow.rf0_rif, currow.rf0_key_id_no, prevrow.rf0_start_date, currow.rf0_start_date
FROM #RIF_TEMP0 currow LEFT JOIN #RIF_TEMP0 prevrow
ON (currow.rf0_row_no = prevrow.rf0_row_no + 1)

[Code] ....

the count returned from both the queries is different.

I am not sure what am I doing wrong. The count of #RIF_TEMP0 is always 32, it never changes, but the variable @countTemp is different for both the queries.

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Why does this right join return the same results as using a left (or even a full join)?There are 470 records in Account, and there are 1611 records in Contact. But any join returns 793 records.

select Contact.firstname, Contact.lastname, Account.[Account Name]
from Contact
right join Account
on Contact.[Account Name] = Account.[Account Name]
where Contact.[Account Name] = Account.[Account Name]

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Aug 17, 2007

Hi guys,

I'll appreciate any help with the following problem:

I need to retrieve data from 3 tables. 2 master tables and 1 transaction table.

1. Master table TBLOC contain 2 records :
rcd 1. S01
rcd 2. S02

2. Master table TBCODE contain 5 records:

rcd 1. C1
rcd 2. C2
rcd 3. C3
rcd 4. C4
rcd 5. C5

3. Transaction table TBITEM contain 4 records which link to 2 master table:
rcd 1. S01, C1, CAR

rcd 2. S01, C4, TOY
rcd 3. S01, C5, KEY
rcd 4. S02, C2, CAR



I use Left Join & Right Join to retrieve result below (using non-ASNI method) but it doesn't work.

Right Join method:


SELECT C.LOC, B.CODE, A.ITEM FROM TBITEM A RIGHT JOIN TBCODE B ON A.CODE = B.CODE

RIGHT JOIN TBLOC C ON A.LOC = C.LOC

GROUP BY C.LOC, B.CODE, A.ITEM ORDER BY C.LOC, B.CODE



When I use Non-ASNI method it work:



SELECT C.LOC, B.CODE, A.ITEM FROM TBITEM A, TBCODE B, TBLOC C

WHERE A.CODE =* B.CODE AND A.LOC =* C.LOC

GROUP BY C.LOC, B.CODE, A.ITEM ORDER BY C.LOC, B.CODE

Result:

LOC CODE ITEM
-----------------------------
S01 C1 NULL
S01 C2 NULL
S01 C3 CAR
S01 C4 TOY
S01 C5 KEY
S02 C1 NULL
S02 C2 CAR
S02 C3 NULL
S02 C4 NULL
S02 C5 NULL


Please Help.

Thanks.






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Nov 7, 2006

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This is the simple sql (no join on the tables):

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But how to do this in SSIS?

Thanks - Ken

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May 6, 2008

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