I am confused with inner and outer joins. Can someone explain to me exactly what the differences are? The reason I am asking is I am trying to populate a datagrid from multiple tables. The SQL query currently pulls out all customers that have revenue only, When in fact I need it to pull out all customers regardless of revenue so that I can see which customers have "0" revenue.
Here is my sql query which sorts each day into a new datagrid column.
SQL = "SELECT revenue_forecast.oct_03 AS 'forecast', pb_customers.customer_name AS 'customer', sum(case when day(pb_report_shippers.shipper_date_time) = 1 then pb_report_shippers.total_ext_price + pb_report_shippers.setup_cost else 0 end) as day1, sum(case when day(pb_report_shippers.shipper_date_time) = 2 then pb_report_shippers.total_ext_price + pb_report_shippers.setup_cost else 0 end) as day2, FROM pb_report_shippers Left outer JOIN pb_jobs ON pb_report_shippers.job_id = pb_jobs.job_id left outer JOIN pb_customers ON pb_jobs.customer_id = pb_customers.customer_id left outer JOIN revenue_forecast ON pb_customers.customer_id = revenue_forecast.customer_id WHERE pb_report_shippers.shipper_date_time between cast('11/01/03' as datetime) and cast('11/2/03' as datetime) AND pb_report_shippers.job_completed IN('1','0') AND pb_customers.customer_deleted <> '1' GROUP by pb_customers.customer_name, revenue_forecast.oct_03 Order BY pb_customers.customer_name"
We find that a delete command on a table where the rows to be deleted involve an inner join between the table and a view formed with an outer join sometimes works, sometimes gives error 625.
If the delete is recoded to use the join key word instead of the = sign then it alway gives error 4425.
625 21 0 Could not retrieve row from logical page %S_PGID by RID because the entry in the offset table (%d) for that RID (%d) is less than or equal to 0. 1033 4425 16 0 Cannot specify outer join operators in a query containing joined tables. View '%.*ls' contains outer join operators. The delete with a correleted sub query instead of a join works.
Error 4425 text would imply that joins with view formed by outer joins should be avoided.
I have been using an outer join to display information in a form. I would like to edit the rows that are returned. The join shows all of the rows in the 1st table, and the corresponding rows in the 2nd other. If there are no corresponding rows in the 2nd table, a NULL is displayed. The problem is when I try to edit one of the fields that is "NULL", I get an error. I know why the error is happening, because the NULL field is a row that does not exist, yet. The jet database engine will automatically insert rows into the 2nd table, but SQL server will not. I have tried to set primary key and foreign key properties for the tables in question, but it still does not work. Does anyone know how to do this?
I have been reading about outer joins and how they are much faster to process on larger data sets than NOT EXISTS are..Did anyone find any significant performance gain..Logically, using an outer join does not make sense in this context..Can someone shed some light on this subject?
I am trying to create an outer join between two tables in a query thatincludes several other tables.When I double-click on the Join line, it presents three join options:1) ONLY records from table1 and table2 where join fields are equal2) ALL values from table1 and ONLY records from table2 where joinfields are equal3) ALL values from table2 and ONLY records from table1 where joinfields are equalIn my case, I want option 2 - all values from table1, and if there isno match to table2, I want a blank to appear in the output.When I select this option, I get the following error:"Can't have outer joins if there are more than two tables in thequery."How can I get around this, since there are other tables in my query?Thanks.Dennis HancyEaton CorporationCleveland, OH
Is it possible to utilize more than two tables in a single outer join? I have one table that I want every row and 18 others where I only want an entry if one is present meeting the conditions of "1.customerid = 2.Customerid" etc. I haven't run across this before and would appreciate any help.
I wrote a SQL query that firstly do an outer-join for two table and after I add another table with outer-join as well. I'm getting the following message: Server: Msg 301, Level 16, State 1, Line 1 Query contains an outer-join request that is not permitted. May be someone knows what is it? If I remove the second join- it work....
Hi, I need to change some SQL statements in Oracle to to SQL Server syntax. For example, the following is a query in Oracle SQL syntax. ================================================== =========================== SELECT COUNT(*) FROM TABLE1 T1, TABLE2 T2, TABLE3 T3, TABLE4 T4, TABLE5 T5 WHERE ( T1.NO(+)=T3.NO AND T3.NO=T2.NO(+) AND T4.NO(+)=T3.NO AND T3.NO=T5.NO(+) ) AND ( T1.CODE(+)='VALUE1' AND T2.CODE(+)='VALUE2' AND T4.CODE(+)='VALUE3' AND T5.CODE(+)='VALUE4' ) ================================================== ========================= Can you anyone please tell me the SQL Server equivalent? I am having doubts in the outerjoin part. Thanks in advance Regards R
select * from furn_piece_master fpm, furn_piece_detail fpd, furn_detail fd where fpd.fpd_master_id = fpm.fpm_id and fpm.ymr = '200411U' and fpd.ymr = fpm.ymr and fpd.chain = fpm.chain and fpd.store = fpm.store and fpd.week = fpm.week and fd.ymr = fpd.ymr and fd.chain = fpd.chain and fd.store = fpd.store and fd.report_type = fpd.report_type and fd.week = fpd.week and fd.item_key = fpd.item_key
Now I want to do an outer join on the furn_detail (fd) store only, but leave the rest of the furn_detail inner joins. How would I do this?
I'm upgrading from SQL 2000 -> 2005 at the moment. Having an issue with some old Outer Join SP's which use the =* and *= operators.
The issue i am having is this. Using this Procedure on the Pubs DB: SELECT title, qty FROM titles, sales WHERE titles.title_id *= sales.title_id ORDER BY qty
Works fine. I get 23 rows with 2 of them having NULL in qty.
This also works, giving the same result: SELECT title, qty FROM titles LEFT OUTER JOIN sales ON titles.title_id = sales.title_id ORDER BY qty
All looking good. Now, just say i want to limit the rows from the Right table. Lets just select Store #6380. Using the old *= operator: SELECT title, qty FROM titles, sales WHERE titles.title_id *= sales.title_id AND Stor_ID = 6380 ORDER BY qty
This works fine, giving me all 18 titles, with sales amounts next to two of them, the rest are null, which is the response I want. However, if I insert the same WHERE clause into the OUTER JOIN code: SELECT title, qty FROM titles RIGHT OUTER JOIN sales ON titles.title_id = sales.title_id WHERE Stor_Id = 6380 ORDER BY title
It seems to act like an Inner Join, not an Outer Join, giving me only rows that match on both sides. I can't seem to work out why this would do this. Am I overlooking something simple? Can someone give me some idea why it's not working?
First of all, is this an appropriate place to get answers related to SQL CE? If not, do you have any recomended forums elsewhere?
I'm trying to get a list of various related tables using ResultSets on SQLCE 3. The query is something like this:
SELECT A.* , F.Descricao AS FamiliasDescricao , M.Descricao AS MarcasDescricao , I.Descricao AS IVADescricao FROM Artigos AS A LEFT OUTER JOIN Familias AS F ON A.FamiliasUID = F.UID LEFT OUTER JOIN Marcas AS M ON A.MarcasUID = M.UID LEFT OUTER JOIN IVA AS I ON A.IVAUID = I.UID INNER JOIN ArtigosTipos AS AT ON A.ArtigosTiposUID = AT.UID;
The column ArtigosTiposUID cannot be NULL, so an INNER JOIN is used, but the other UID columns can have a NULL value, and I need all the rows on Artigos to show up even if these other UIDs are NULL. The query runs fine like this in VS2005, returning NULL values for the columns if there are no rows on the other tables, both on the SQL Server 2005 database and the .sdf database used on the Windows Mobile device. But on Windows Mobile SQL CE gives me an "Unspecified error [7]", Native error 25607, an the stack trace ends with:
em System.Data.SqlServerCe.SqlCeCommand.ProcessResult s() em System.Data.SqlServerCe.SqlCeCommand.CompileQueryP lan() em System.Data.SqlServerCe.SqlCeCommand.ExecuteComman d() em System.Data.SqlServerCe.SqlCeCommand.ExecuteResult Set()
If I replace all the LEFT OUTER JOINs with INNER JOINs only the rows where all UIDs have a value show up, but as I said, I want all rows on tabela Artigos. Even if I remove all JOINs except the last one and replace it with a LEFT OUTER JOIN I get the same erro, all rows having the column ArtigosTiposUID defined... it seems as if the simple presence of LEFT OUTER JOIN makes SQL CE return an error.
Is there a way to run the queries on VS using the SQL CE engine so that one can check whether the query will run successfuly on Windows Mobile?
I've encountered this problem multiple times in the past and I have a solution but wonder if there might be a more elegant method of achieving the same result...
Take the following example:SELECT * FROM [User] LEFT OUTER JOIN [Profile] ON [Profile].[UserId] = [User].[UserId] INNER JOIN [Department] ON [Department].[DepartmentId] = [Profile].[DepartmentId]
Users may or may not have a profile (but never more than one). A profile may or may not have a department (but never more than one).
Now, this will return only users that have a profile even though an outer join has been used. What I really want is to return all users and include their profile and department details but only when the profile has a department.
The solution I have used in the past is:
SELECT * FROM [User] LEFT OUTER JOIN ( SELECT * FROM [Profile] INNER JOIN [Department] ON [Department].[DepartmentId] = [Profile].[DepartmentId] ) [ProfileDepartment] ON [ProfileDepartment].[UserId] = [User].[UserId]
The trouble here is that I've lost the ability to reference department and profile independantly in the outer query. Also, more complex scenarios can also become horribly complex if this needs to be done multiple times in the same query.
I could do this:SELECT * FROM [User] LEFT OUTER JOIN [Profile] ON [Profile].[UserId] = [User].[UserId] AND [Profile].[DepartmentId] IS NOT NULL LEFT OUTER JOIN [Department] ON [Department].[DepartmentId] = [Profile].[DepartmentId]
But again I feel that the intention is not at all clear. I want to inner join department to profile because I'm only interested in profiles with a department and departments referenced by a profile.
I would like to be able to specify that the departments should be inner joined to profiles and whichever profiles remain get outer joined to users whilst retaining department and profile as seperate entities within the query.
Is there any way to use brackets to indicate an order of precedance to the logical joins within the from clause?
I'm having problems with queries that use a view in an outer join. It's just sits there and grinds. Below is some queries to illustrate.
SELECT EvalID,RecIndex FROM dbo.vCurrentEvalInfo
Executed in 1 second in SQL Query Analyzer Returns 29,820 Rows ----
SELECT RecIndex FROM dbo.tblCNAKeyInformation
Executed in 1 second in SQL Query Analyzer Returns 47,978 Rows ----
SELECT C.RecIndex, E.EvalID FROM dbo.tblCNAKeyInformation C LEFT OUTER JOIN dbo.vCurrentEvalInfo E ON C.RecIndex=E.RecIndex
Executed in 1 second in SQL Query Analyzer Returns 47,978 Rows ----
SELECT C.RecIndex, E.EvalID, E.DATE_COMP, E.EvalDate, E.EvalCode, E.EvalResults FROM dbo.tblCNAKeyInformation C LEFT OUTER JOIN dbo.vCurrentEvalInfo E ON C.RecIndex=E.RecIndex
Executed in 1 second in SQL Query Analyzer Returns 47,978 Rows ----
Never Finishes Executing. If I include any column from the dbo.tblCNAKeyInformation and the query just grinds.
exampe: SELECT C.RecIndex, E.EvalID, E.DATE_COMP, E.EvalDate, E.EvalCode, E.EvalResults, C.LastName FROM dbo.tblCNAKeyInformation C LEFT OUTER JOIN dbo.vCurrentEvalInfo E ON C.RecIndex=E.RecIndex
Also, the below query doesn't finish executing either. SELECT RecIndex FROM dbo.tblCNAKeyInformation WHERE (RecIndex NOT IN (SELECT RecIndex FROM dbo.vCurrentEvalInfo))
Any I missing something Here? I seems like it's recalcualting the view with each scan of the outer table on the join instead of using a cached copy for x number of micro seconds ago.
I could solve this my dumping the view to a temp table, however that seems like an ugly hack to me.
SELECT Market_code, Description, Revenue = SUM( CASE WHEN BudgetType = 'B' THEN BudgetAmount ELSE 0 END ), CM = SUM( CASE WHEN BudgetType = 'C' THEN BudgetAmount ELSE 0 END ), Tooling = SUM( CASE WHEN BudgetType = 'T' THEN BudgetAmount ELSE 0 END ) FROM Budget RIGHT OUTER JOIN Market ON Budget.Customer_Market_code = Market.Market_code Where Budget.BudgetYear=2007 or Budget.BudgetYear is null GROUP BY Market_code, Description ORDER BY Description
-- ------------------GIVES only 12 results -------------------------------
SELECT Market_code, Description, Revenue = SUM( CASE WHEN BudgetType = 'B' THEN BudgetAmount ELSE 0 END ), CM = SUM( CASE WHEN BudgetType = 'C' THEN BudgetAmount ELSE 0 END ), Tooling = SUM( CASE WHEN BudgetType = 'T' THEN BudgetAmount ELSE 0 END ) FROM Budget, Market Where Budget.Customer_Market_code =* Market.Market_code AND Budget.BudgetYear=2007 GROUP BY Market_code, Description ORDER BY Description
Other than being much less readable, is there a downside to combining left and right outer joins in the same SELECT? I'm reviewing some generally poor code done by a contractor and it's peppered with queries with both left and right joins. I've always thought it was just a semantic difference, but I was just wondering if, other than readability, there were any performance issues.
I am trying to extract the non matching records and the matching ones in two tables from two servers, one a linked server in one go. For example if table A has records, Rec1, Rec2, Rec3 and Rec6 AND Table B has Rec1, Rec2, Rec3 and Rec7 I need to get in the result set Rec1, Rec2, Rec3, Rec6 and Rec7.
The real query I ran is as follows. I want to know the list of all tables in GlobalDB database in sg_qt1 and sg_q5 servers. NOTE : sg_q5 is a Linked server to sg_qt1.
Select Substring(a.name,1,30), Substring(user_name(a.uid),1,19) from sysobjects a full outer JOIN sg_q5.globaldb.dbo.sysobjects b ON a.name = b.name where a.xtype = 'u' and b.xtype = 'u' and a.name not in ('dtproperties','rowcounts','globalDBrowcounts')
If I run it from sg_qt1, the result I get contain all tables from sg_qt1 but not the non-matching ones from sg_q5.
I am obviously doing something wrong, but what is it?
Thanks. If possible please reply to, r.wimalaratne@iaea.org
My problem exists on the last line - TOAD doesn't seem to like the two sets of parenthesis together. Am I supposed to put something in between? It's OK in the line above because the substring is on the other side.
SELECT distinct fp.active_fl, fp.empl_id, fp.proj_mgr_name, pm.project, fp.subctr_id, rd.CONT_CRNCY FROM planner.rbws_proj_mgr pm, finance.fin_proj fp, finance.rbws_detl rd WHERE SUBSTR(fp.proj_id, 1, 9) = pm.project (+) AND pm.PROJECT = substr(rd.PROJ_ID,1,9) (+)
I need to do multiple left outer join to return search profiles that could contain NULL in them that could also be foreign keys. I bolded the three IDs that could be NULL or have a foreign key for a value. An example with my code would be great I've tried decyphering the many employee and company examples on the web but I haven't figured it out yet. Right now I only get profiles that have foreign key values and it misses the rest in the search. So NULL MakeID or ModelID no result on that item my SQL statement below. Using SQL Server 2005. Pretty new this to SQL and databases but so far this has been the only trying part.
Thanks
String dbsql = "SELECT a.EquipmentID " + " , a.SerialNo " + " , b.Category " + " , c.Subcategory " + " , d.Make " + " , e.Model " + " , f.Status " + " FROM tblEquipInfo a " + " , tblEquipCat b " + " , tblEquipSubcat c " + " , tblEquipMake d " + " , tblEquipModel e " + " , tblStatus f " + " WHERE b.Category = '" + val + "' " + " AND a.CategoryID = b.CategoryID " + " AND a.SubcategoryID = c.SubcategoryID " + " AND a.MakeID = d.MakeID " + " AND a.ModelID = e.ModelID " + " AND a.StatusID = f.StatusID";
I have two tables, one is a large table (v_userviews) containing a list of all the servers and various information about those servers. The other table (l_printers) contains printer information for those servers. I am working on a view to consolidate the printer information in l_printers with the other server information in v_userviews.
I've been trying to get outer joins to work but I am getting this error: "Server: Msg 8115, Level 16, State 2, Line 2 Arithmetic overflow error converting expression to data type int. Warning: Null value is eliminated by an aggregate or other SET operation."
Here is my select statement:
select u.propid, u.address, SUM((CASE u.Tree WHEN 'tree1' then 1 ELSE 0 END)) AS One, SUM((CASE u.Tree WHEN 'tree2' then 1 ELSE 0 END)) AS Two, SUM((CASE u.Tree WHEN 'tree3' then 1 ELSE 0 END)) AS Three, SUM((CASE u.Tree WHEN 'tree4' then 1 ELSE 0 END)) AS Four, SUM((CASE u.Tree WHEN 'tree5' then 1 ELSE 0 END)) AS Five, SUM((CASE u.Tree WHEN 'tree6' then 1 ELSE 0 END)) AS Six, SUM((CASE u.Tree WHEN 'tree7' then 1 ELSE 0 END)) AS Seven, SUM((CASE u.Tree WHEN 'tree8' then 1 ELSE 0 END)) AS Eight, SUM((CASE u.Tree WHEN 'tree9' then 1 ELSE 0 END)) AS Nine, SUM((CASE u.Tree WHEN 'tree10' then 1 ELSE 0 END)) AS Ten, SUM((CASE u.Tree WHEN 'tree11' then 1 ELSE 0 END)) AS Eleven, SUM((CASE u.Tree WHEN 'tree12' then 1 ELSE 0 END)) AS Twelve, SUM((CASE u.Tree WHEN 'tree13' then 1 ELSE 0 END)) AS Thirteen, SUM((CASE u.Tree WHEN 'tree14' then 1 ELSE 0 END)) AS Fourteen,
count(u.server) as totalservers, sum(cast(left(u.totalspace,len(u.totalspace)-2) as int)) as totalspace, sum(cast(left(u.totalusedspace,len(u.totalusedspac e)-2) as int)) as totalusedspace, count(p.printer) as numprinters
from serverops.dbo.v_userviews u LEFT OUTER JOIN novell_twr.dbo.l_printers p ON u.propid = p.propid where u.os='netware'and u.state in ('ny', 'nj', 'fl') group by u.propid, u.address
The following query should return a list of clr_id's that have a match in at least 1 of the other fields mentioned in the joins.
declare @keyWord varchar(40) set @keyWord = 'merc' set NOCOUNT on
SELECT distinct clr.clr_id FROM CLR LEFT OUTER JOIN CO ON CLR.CO_ID = CO.CO_ID LEFT OUTER JOIN CLR_NM ON CLR.CLR_ID = CLR_NM.CLR_ID LEFT OUTER JOIN CLR_USE_YR ON CLR.CLR_ID = CLR_USE_YR.CLR_ID LEFT OUTER JOIN MODL ON CLR_USE_YR.MODL_ID = MODL.MODL_ID LEFT OUTER JOIN PAINT_CD ON CLR.CLR_ID = PAINT_CD.CLR_ID WHERE co.long_nm like '%'+@keyWord+'%' OR clr_nm.clr_nm like '%'+@keyWord+'%' OR clr_use_yr.yr_num like '%'+@keyWord+'%' OR paint_cd.paint_cd like '%'+@keyWord+'%' OR modl.modl_nm like '%'+@keyWord+'%'
The query runs at 3secs. Could I improve the query somehow? I was thinking that, since I actually need a distinct set of clr_id's, I should somehow check only the clr_id's that don't have a match in any of the previous joins.
provided the following code samples for different types of joins
inner join
Code: SELECT title, pub_name FROM titles INNER JOIN publishers ON titles.pub_id = publishers.pub_id left join
Code:SELECT titles.title_id, titles.title, publishers.pub_name FROM titles LEFT OUTER JOIN publishers ON titles.pub_id = publishers.pub_idright join
Code:SELECT titles.title_id, titles.title, publishers.pub_name FROM titles RIGHT OUTER JOIN publishers ON titles.pub_id = publishers.pub_idfull join
Code:SELECT titles.title_id, titles.title, publishers.pub_name FROM titles FULL OUTER JOIN publishers ON titles.pub_id = publishers.pub_idjoin
Code: SELECT * FROM authors CROSS JOIN publishers i created two MSAccess Tables:
Merge1:
K1 x ---- ---- a 1 b 2 c 3
Merge2:
K1 x ---- ---- b 20 c 30 d 40 e 50
and executed the following code to test the different joins. the first three joins worked but the last two did not. would appreciate any insight. DBM is an instance of an AccessDBManager class i have written to encapsulate interactions with Access DBs.
Code: DBM.SQLExtractString = "select * from Merge1 INNER JOIN Merge2 on Merge1.K1 = Merge2.K1"; DBM.SQLExtract(); s.Format(_T("%d"),DBM.SQLExtractRecords); MessageBox(s,_T(""),MB_OK);this worked - 2 records returned (K1 = b,c)
Code:DBM.SQLExtractString = "select * from Merge1 LEFT OUTER JOIN Merge2 on Merge1.K1 = Merge2.K1"; DBM.SQLExtract(); s.Format(_T("%d"),DBM.SQLExtractRecords); MessageBox(s,_T(""),MB_OK);this worked - 3 records returned (K1 = a,b,c)
Code:DBM.SQLExtractString = "select * from Merge1 RIGHT OUTER JOIN Merge2 on Merge1.K1 = Merge2.K1"; DBM.SQLExtract(); s.Format(_T("%d"),DBM.SQLExtractRecords); MessageBox(s,_T(""),MB_OK);this worked - 4 records returned (K1 = b,c,d,e)
Code:DBM.SQLExtractString = "select * from Merge1 FULL OUTER JOIN Merge2 on Merge1.K1 = Merge2.K1"; DBM.SQLExtract(); s.Format(_T("%d"),DBM.SQLExtractRecords); MessageBox(s,_T(""),MB_OK);this did not work - 0 records returned instead of 5 (K1 should = a,b,c,d,e)
Code:DBM.SQLExtractString = "select * from Merge1 CROSS JOIN Merge2"; DBM.SQLExtract(); s.Format(_T("%d"),DBM.SQLExtractRecords); MessageBox(s,_T(""),MB_OK);this did not work - 0 records returned instead of 20 (5 * 4)
appreciate any ideas/comments to get the last two joins to work.
I'm new to ms-sqlserver ( 2000 ) and need to get an OUTER JOIN workingon a three table query.Assumptions:-- I have events in the Event table.-- Each event CAN have one Transaction, but it's not guaranteed-- Each transaction, ir present, will have one or more Amount recordsThis would be the pseudo-query without any special joins:-----------------------------------------SELECTa.Name,SUM( c.amount ) as TotalFROMEvent a,Transaction b,Amounts cWHEREa.EventID = b.EventIDANDb.TransID = c.TransID-----------------------------------------This is fine if there is a Transaction for the Event. But, if there'sno transaction for an event, no record is pulled of course.What I need is for a record to come back for each event regardless ofthe presence of a Transaction. If there's no transaction, then the"Total" column should be 0.How would I get an OUTER JOIN to work on this so that each Event gets arecord?TIA-BEP
I am having an issue with large queries using Microsoft SQL Server 2005 - 9.00.2221.00 (X64).
I have a query with many INNER/LEFT OUTER/RIGHT OUTER joins which is taking very very very long to run. This looks exactly like this problem described in http://support.microsoft.com/kb/318530. However, this doc says it was fixed in SP1, which is already installed.
Basically I have a query:
SELECT .... FROM TABLEA
INNER JOIN TABLEB ... LEFT OUTER TABLEC... LEFT OUTER TABLED... RIGHT OUTER TABLEF... LEFT OUTER TABLEJ.. LEFT OUTER TABLEH... LEFT OUTER TABLEI... RIGHT OUTER TABLEK... LEFT OUTER TABLEM.. ... 17 joined tables in all...... WHERE TABLEB.field1 = 'abc'
The query plan for this is using TABLEA as the "main" table and joining everything else to it. The problem is, TABLEA has 117 MILLION records. TABLEB has 10,000 records which match the WHERE. I stopped this query after it ran for 62 HOURS.
If I simply change the query to:
SELECT .... FROM TABLEB
INNER JOIN TABLEA ... LEFT OUTER TABLEC... LEFT OUTER TABLED... RIGHT OUTER TABLEF... LEFT OUTER TABLEJ.. LEFT OUTER TABLEH... LEFT OUTER TABLEI... RIGHT OUTER TABLEK... LEFT OUTER TABLEM.. ... 17 joined tables in all...... WHERE TABLEB.field1 = 'abc'
The query runs in 15 mins. The query plan now uses TABLEB and the WHERE clause to join all the other tables.
The problem is, this query is generated from a report writter, and I have no control over the way it creates the SQL code.
I have tried all possible combinations of changing this. But was not able to make the results tally.I am giving you a part of the query, there are others queries involving 4 tables which are based on this same temporary table query.
SELECT c.juris_id, b.jrnl_mo_yr FROM a_trueup a, #t_mths b, r_rj c WHERE a.rlzd_mo_yr =* b.jrnl_mo_yr AND a.juris_id =* c.juris_id
[code]....
I tried using left outer join as mentioned in blogs but got a different result (14 rows).I also used set null off/on options but no luck ..
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.
SQL Server 2000Howdy All.Is it going to be faster to join several tables together and thenselect what I need from the set or is it more efficient to select onlythose columns I need in each of the tables and then join them together?The joins are all Integer primary keys and the tables are all about thesame.I need the fastest most efficient method to extract the data as thisquery is one of the most used in the system.Thanks,Craig
We have two tables that have somewhat of a parent-child relationship. We are trying to use a SQL-92 outer join that returns the same results as a TSQL *= outer join. The difficulty we are having is that some of the parent records do not have any corresponding child records, but we still want to see those parent records with 0 (zero) for the count. How can we accomplish this with a SQL-92 compliant join (if it is even possible)? In the query results below, we would like the first set of results.
Thanks in advance for any help. -David Edelman
Test script below, followed by results =========================================== create table parent (p_id int NOT NULL) go create table child (p_id int NOT NULL, c_type varchar(6) NULL) go insert parent values (1) insert parent values (2) insert parent values (3) insert parent values (4) insert parent values (5) insert parent values (6) insert parent values (7) insert parent values (8) insert parent values (9) insert parent values (10) go
Why is it that SQL joins (*=) run a little faster as opposed to ANSI joins(LEFT JOIN...)? Aren't they supposed to be almost identical?
The issue is this: we are promoting using ANSI syntax for the obvious reason (future versions of SQL Server may not support SQL Server syntax; portability, etc.)
However, the problem is the speed. What have others done about this? Do you use ANSI syntax or SQL syntax? HOw true is it that future SQL Server versions may discontinue support for the '*=" and "=*' join operators.
