I have 2 tables, I will add sample data to them to help me explain...
Table1
(Fields: A, B)
=====
1,One
2,Two
3,Three
Table2
(Fields: A,B)
=====
2,deux
9,neuf
I want to create a query that will only return data so long as the key
(Field A) is on both tables, if not, return nothing. How can I do
this? I am thnking about using a 'JOIN' but not sure how to implement
it...
I'm having trouble with a multi-table JOIN statement with more than one JOIN statement.
For each order, I need to return the following: CarsID, CarModelName, MakeID, OrderDate, ProductName, Total ordered the Car Category.
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.
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:
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 descrip = 'g' ORDER BY balance DESC
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?
I was writing a query using both left outer join and inner join. And the query was ....
SELECT Â Â Â Â Â Â Â S.companyname AS supplier, S.country,P.productid, P.productname, P.unitprice,C.categoryname FROM Â Â Â Â Â Â Â Production.Suppliers AS S LEFT OUTER JOIN Â Â Â Â Â Â (Production.Products AS P Â Â Â Â Â Â Â Â 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 Â Â Â Â Â Â Â S.companyname AS supplier, S.country,P.productid, P.productname, P.unitprice,C.categoryname FROM Â Â Â Â Â Â Â 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.
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?
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?
I have a merge join (full outer join) task in a data flow. The left input comes from a flat file source and then a script transformation which does some custom grouping. The right input comes from an oledb source. The script transformation output is asynchronous (SynchronousInputID=0). The left input has many more rows (200,000+) than the right input (2,500). I run it from VS 2005 by right-click/execute on the data flow task. The merge join remains yellow and the task never finishes. I do see a row count above the flat file destination that reaches a certain number and seems to get stuck there. When I test with a smaller file on the left it works OK. Any suggestions?
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.
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.
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]
Is there a way to do a super-table join ie two table join with no matching criteria? I am pulling in a sheet from XL and joining to a table in SQLServer. The join should read something like €œfor every row in the sheet I need that row and a code from a table. 100 rows in the sheet merged with 10 codes from the table = 1000 result rows.
This is the simple sql (no join on the tables):
select 1.code, 2.rowdetail from tblcodes 1, tblelements 2
I read that merge joins work a lot faster than hash joins. How would you convert a hash join into a merge join? (Referring to output on Execution Plan diagrams.) THANKS
There is a table called "tblvZipCodes" that contain a zipcode of all cities, area code that are located in that zip code.
The problem I have with the inner join is that there are more than 1 cities in one zipcode code. Is there a way to just return only the 1st row and not return the rest of the rows from the tblvZipCodes in the INNER JOIN query?
Thanks..
Code:
SELECT TOP 100 PERCENT dbo.tblPurchaseRaw.Year, dbo.tblPurchaseRaw.Make, dbo.tblPurchaseRaw.Model, dbo.tblPurchaseRaw.ModelType, dbo.tblPurchaseRaw.Color, dbo.tblvZipCodes.ZIPCode, dbo.tblvZipCodes.City, dbo.tblvZipCodes.County, dbo.tblvZipCodes.State, dbo.tblvZipCodes.AreaCode, dbo.tblvZipCodes.Region, dbo.tblaAccounts.Name, dbo.tblaAccounts.PhoneOne, dbo.tblaAccounts.AccountID, dbo.tblPurchaseRaw.AcceptedID, dbo.tblPurchaseRaw.Series, dbo.tblPurchaseRaw.BodyStyle, dbo.tblaAccounts.WebSite, dbo.tblaAccounts.SalesEmail, dbo.tblPurchaseRaw.EmailTo, dbo.tblPurchaseRaw.PhotoURL, dbo.tblPurchaseRaw.Mileage, dbo.tblPurchaseRaw.RawID, dbo.tblvRegions.Name AS RegionName, dbo.tblPurchaseRaw.VIN, dbo.tblPurchaseRaw.Style, dbo.tblPurchaseRaw.StockDate FROM dbo.tblPurchaseRaw INNER JOIN dbo.tblaAccounts ON dbo.tblPurchaseRaw.AccountID = dbo.tblaAccounts.AccountID INNER JOIN dbo.tblvZipCodes ON dbo.tblPurchaseRaw.ZipCode = dbo.tblvZipCodes.ZIPCode INNER JOIN dbo.tblvRegions ON dbo.tblvZipCodes.Region = dbo.tblvRegions.RegionID WHERE (CONVERT(char, dbo.tblPurchaseRaw.StockDate, 101) <> '01/01/1900') AND (dbo.tblPurchaseRaw.SoldRawID IS NULL) AND (dbo.tblPurchaseRaw.AcceptedID <> - 10) AND (dbo.tblPurchaseRaw.AcceptedID <> - 1) ORDER BY dbo.tblvZipCodes.ZIPCode
hello, i am running mysql server 5 and i have sql syntax like this: select sales.customerid as cid, name, count(saleid) from sales inner join customers on customers.customerid=sales.customerid group by sales.customerid order by sales.customerid; it works fine and speedy. but when i change inner join to right join, in order to get all customers even there is no sale, my server locks up. note: there is about 10000 customers and 15000 sales. what can be the problem? thanks,
Hi,Just curious. Would you use ANSI style table joining or the 'oldfashion' table joining; especially if performance is the main concern?What I meant is illustrated below:ANSI Styleselect * from a join b on a.id = b.idOld Styleselect * from a, b where a.id = b.idI noticed that in some SQL, the ANSI is much faster but sometimes, theold style looks much better.It's ridiculous to try out both styles to see which is better wheneverwe want to write an SQL statement.Please comment.Thanks in advance.
Hello, everyoneI have one question about the standard join and inner join, which oneis faster and more reliable? Can you recommend me to use? Please,explain me...ThanksChamnap
Where function_code is the function of the area e.g. Auditorium, Classrom, etc, etc. And not all components are available for all functions e.g. Carpeting is available for Classrooms but not Power Plants or Warehouses.
I need to self join the above table to itself on system_code and system_component_code and find out which rows are missing from each side.
A query that I've been banging away at with no success is:
SELECT c1.*, c2.* FROM [dbo].[component_multiplier_table] c1 FULL OUTER JOIN [dbo].[component_multiplier_table] c2 ON (c1.system_component_code = c2.system_component_code) AND (c1.[system_code] = c2.[system_code]) WHERE c1.function_code = '2120' AND c2.[function_code] = '2750' AND (c1.[system_code] IS NULL OR c2.system_code IS NULL);
I added the is null conditions, no joy. I've tried every flavor of outer join w/o success.
Could any T-SQL gurus out there help me figure out how to do this in a set before I start coding
SELECT * FROM a LEFT OUTER JOIN b ON a.id = b.id instead of
SELECT * FROM a LEFT JOIN b ON a.id = b.id
generates a different execution plan?
My query is more complex, but when I change "LEFT OUTER JOIN" to "LEFT JOIN" I get a different execution plan, which is absolutely baffling me! Especially considering everything I know and was able to research essentially said the "OUTER" is implied in "LEFT JOIN".
Hi, im searching for some help, here is my problem:i have an Appointments Table ex:Appointments AppointmentID : int ContactsList : xmlstruture of the ContactsList column:<ArrayOfContactsInfos> <ContactsInfos> <ContactID>1</ContactID> </ContactsInfos> <ContactsInfos> <ContactID>2</ContactID> </ContactsInfos></ArrayOfContactsInfos>And my Contacts Table:Contacts ContactID : int FirstName : varchar(200) LastName : varchar(200)What i want to do... is find the right query for retreive a list of Appointment based on the FirstName or LastName of a Contact in the ContactsList collumnis this possible to do a sort of join between the xml and the Contacts Table?and if yes how?Please can you help me?
Hello,There are 2 tables A(bot_id,bot_date,gomA,gomB) B(gom_id,hist_date, gom_name) table B holds the names for gomA and gomB in tableA.I wish to select A table and inner join to it gom_name for gomA and gomB IDs.The problem begins when in table B there is multiple values for gom_id, with difference names.So, to retrieve the correct B.gom_id, there is 2 conditions. first bot_date>B.hist_date and after this, if we still gets multiple records then the top record will be selected (order by date) Any ideas?
I really need some help. I'm going nuts. I been trying to get this to work all morning and i cant get it it work. the simple version is I am trying to join these two sql queries and make them one.
Code:
SELECT news. * , CONCAT( users.user_fname, " ", users.user_lname ) AS org_author FROM news LEFT JOIN users ON news.news_author = users.user_id WHERE news_id =41
SELECT CONCAT('users.user_fname', 'users.user_lname') *AS edit FROM users WHERE users.user_id=54
my previous attempts are
trouble with query.
I have a news table which has the ID of the original author and a column for the author who last edits the news article. both columns store the id of the author.
now when I'm editing the article I want to get the name of the author from the users table.
I have done a left join to get the first author (original author) but I'm having a real hard time trying to get the name of the author who last edited the record.
they both need to lookup the user_fname and user_lname fields from the users table.
my current sql is below
Code:
SELECT news.*, CONCAT(users.user_fname, " ",users.user_lname) AS org_author FROM news LEFT JOIN users ON news.news_author=users.user_id WHERE news_id=41
which gives me
Code:
news_id *news_subject *news_article *news_author *news_date *news_edited *edit_author *org_author * 41InterclubBunbury IC club has asked us all to attend a inter...771090247547109041836254Adam Green
Now how do i adapt it to get the name of the author to last edit the article? do I do a sub query another left join ??? every way I try doesn't work.
this is what I'm currently trying to get it with.
Code:
SELECT news. * , CONCAT( users.user_fname, " ", users.user_lname ) AS org_author FROM news LEFT JOIN users ON news.news_author = users.user_id LEFT JOIN (
SELECT CONCAT( users.user_fname, " ", users.user_lname ) AS edit_author FROM news WHERE news.edit_author = users.user_id ) WHERE news_id =41
Heres a different approach that I thought would work
Code:
SELECT news. * , CONCAT( users.user_fname, " ", users.user_lname ) AS org_author FROM news LEFT JOIN users ON news.news_author = users.user_id LEFT JOIN (
SELECT concat( users.user_fname, users.user_lname ) AS edit FROM users WHERE users.user_id =54 ) AS edit WHERE news_id =41
but no i get this error
Code:
MySQL said:
#1064 - You have an error in your SQL syntax near '( SELECT concat( users.user_fname, users.user_lname ) *AS edit FROM users WHERE' at line 4
I also tried
Code:
SELECT news.*, CONCAT(users.user_fname, " ",users.user_lname) AS org_author, *(SELECT concat(users.user_fname, users.user_lname) AS edit from users where users.user_id=54) AS edit FROM news LEFT JOIN users ON news.news_author=users.user_id WHERE news_id=41
but got this error
Code:
MySQL said:
#1064 - You have an error in your SQL syntax near 'SELECT concat( users.user_fname, users.user_lname ) *AS edit FROM users WHERE us' at line 2
can anyone help me with this query its been driving me up the wall all morning.
how do I add in a 3rd and 4 table to the mix and get their sums and group by ...The top select works fine the lower one is what I was thinking is this.....
Select Distinct P.CustID, P.Acct, P.Title, P.FirstName, P.LastName, A.Trips, A.MoneySpent, A.Bal FROM dbo.Cust P INNER JOIN (SELECT CustID, Sum(Days) as Trips, SUM(MoneySpent) as MoneySpent, Sum(Balance) as Bal FROM dbo.CAsh Where Accumulator='DP' GROUP BY CustID) A ON P.CustID = A.CustID
The 2 new tables are ViewDis (X) - Sum (Distance)and ViewACC (Y) Sum Fields required Hours, Min, (Group by) Building and Date.
Select Distinct P.CustID, P.Acct, P.Title, P.FirstName, P.LastName, A.Trips, A.MoneySpent, A.Bal, X.Distance, Y.Hours, Y.Min, Y.Building FROM dbo.Cust P INNER JOIN
i have two tables field1 is the primary key: table1 -------------------- field1|field2|field3 ---------------------
table2 --------------------- field1|field4|field5 --------------------- what we need is to get the results based on field1 matching datas, but is also a requirement that if there is no matching data in field1 of table2 w.r to table1 we just need to return table1 datas with null values for table2 fields.
is that possible, i used inner, right joins but all in vain.
I have two tables and one linking table they look something like this
<<<<<<<Application Table>>>>>>
AppID AppName 1 MS Word 2 Excel 3 SoftGrid
<<<<<<System Table>>>>>>>>
SysID SysName 1 System 1 2 System 2 3 Server 1
<<<<<<Link Table>>>>>>>>>
SysID AppID 1 1 1 3
How can i retirve the data so that it picks up and displays all the applications that are not on the the server as well as those that are
for example the output im trying to get is as follows from the data above.......
SysName AppName Y/N System 1 MS Word Y System 1 Excel N System 1 SoftGrid Y System 2 MS Word N System 2 Excel N System 2 SoftGrid N Server 1 MS Word N Server 1 Excel N Server 1 SoftGrid N
i want to able to get a dynamically generated Y/N colunm
Im ok with doing innerjoin queries but the problem is how do i get the rest of the results that have no links to show that there it does not exist.
Hi, I need to write a query to get the data in hierarchy from a table. Like emp table where each employee(EMPID) has an manager and manager is also an employee(EMPID). There could be 2 level of managers. Mean an employee who is a manager can also have manager. So i need to write query which shows three columns with column1=toplevel manager, column2=secondlevel manager and column3=team member.
select distinct safetyvideo2007.user_id,safetyvideoview.name from safetyvideo2007,safetyvideoview where safetyvideo2007.user_id=safetyvideoview.user_id order by safetyvideoview.name asc
this retrive records only where first table user_id= second table user_id
table1 = safetyvideo2007 user_id colum table2 = safetyvideoview user_id and name column
I want the it retreive records from safetyvideo2007 all records if first table only have user_id column no name column available.
ie. show table safetyvideo2007 all user_id if second table safetyvideoview user_id does not found ? ie. it found user_id in second table then ok otherwise it retreive all records from safetyvideo2007.
