Problem Getting Results From A Join
Jan 5, 2007
i have a query with some inner joins that return information about an employee
i am running into a problem in that i need one employees email based on one inner join and anothers based on another inner join -- is there a way to get both in one query?
select employee.email , bunch of other stuff
from work
INNER JOIN technician ON business_location.technician_id = technician.technician_id
inner join salesrep on business_location.salesrepid = salesrep.salesrep_id
not sure how to get both of those to employee.emp_id and get the email
technician.technician_id = employee.emp_id
salesrep.salesrep_id = employee.emp_id
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Feb 5, 2015
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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Mar 5, 2007
Hello, first post since I can usually find answers by reading the forums. I've searched the internet up and down and for some reason I can't get this query to work properly.
I have two tables:
ticket
ticket_id
ticket_to
ticket_from
message
message_id
ticket_id
message
There can be several messages per ticket, connected by the ticket_id. I'd like to only pull only the most recent message, as well as the results from the ticket table. Currently I'm getting all messages per ticket.
Here's what I have:
SELECT distinct ticket.ticket_to, ticket.ticket_from, message.ticket_id, message.message
FROM tickets
INNER JOIN message ON tickets.ticket_id = message.ticket_id
GROUP BY message.ticket_id, message, ticket_to, ticket_from
Any help would be greatly appreciated! Thanks much.
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Oct 16, 2007
Hi, i guess u have run into it again..
I have 3 tables
Table 1 is holding word documents :
WordDoc
wd_id integer primary key
wd image
Table 2 is holding parts of the document in a master detail fashion as from one document we can create many parts of it.
WordPartDoc
wpd_id integer primary key
wpd_wd_id integer foreign key from WordDoc
wpd_part image
Table 3 holds the persons or groups to whom we have given a copy of a specific part.
PersonsCopiedAt
pca_id integer primarey key
pca_wpd_id integer foreing key from WordPartDoc
pca_pg_id integer this is the id of the table that holds the persons or the id of the table that holds the group
pca_p_or_g char(1) this is a flag : 'P' for a person, 'G' for a group
Now, here is my problem... I have created the following sql query
select wd_id, wpd_id
from wordDoc
inner join wordPartDoc on wpd_wd_id = wd_id
inner join PersonCopiedAt on pca_wpd_id = wpd_id
where pca_pg_id = someID and pca_p_or_g = 'G' --or 'P'
This works perfectly if a pca_pg_id is provided, but this is provided using a combobox... If the user doesn't select a person - and thus - no id is provided - inner join brings me as many records of wpd_id as the number of persons that were given a copy. I understand that this is the correct behaviour but in the later case (when no id is provided) i want only one record to be returned. Is there a way to do so ? do i have to redisign the db schema ?
thanx
theodore
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Jan 25, 2008
Hello all,
I have been using T-SQL for a while now although the majority of my work required relativley simple queries.
I just need to know is there a way to JOIN the results of several SELECT queries, maybe through the use of functions??
A reference to any online article would be most helpful.
Cheers,
Sean
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Jun 11, 2007
How can I JOIN the results of two stored procs?
I have a two stored procs: sp_Users_GetByID and sp_UserInfo_GetByID
I want to create another stored proc that basically grabs the results from both of these, joins them, and returns that data. I just don't know how...
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Sep 2, 2004
I really must be missing something here...
Trying to cross-update 2 tables.
Picture a checkbook reconcilliation without common check numbers. The checkbook has uniqueids and the bank has transaction ids but they are different. So the match is on date/payee and amount. So I wrote 2 checks to the same person, on the same day, for the same amount but forgot to enter one in the register.
when i run the update statement:
update b set b.bankid=c.myid
from checks c
join bank b on c.cdate=b.cdate
and c.payee=b.payee
and c.cost=b.cost
Both bank statement records would be updated to my one check record [can't happen]
Also: this will be running on a hundred thousand records per month with potential for duplication/ommission on either side.
What's a poor newbie missing??
I'm doing something similar on a lesser volume by running sequential statements through an ASP script but performance is poor. I know SQL can do this, just not how to approach it.
Thanks for any guidance
Dale
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Jan 28, 2015
I have two tables, one with data for one type of ID (call it key1) and a table where this ID (call it key2) is transformed to another. It is not one-to-one match with these types of ID and I want to check those key2 cases that have two or more key1 linked to it.
It is simple enough and for the easiest check I don't even need table1 to run it as table2 has both key1 and key2 variables.
However, not all doubles are of identical worth. Table1 (that has only key1) has a year variable. I am interested in doubles that have same year variable, ie. in table1 there are two key1 cases with the same year variable that are linked to one key2 case in table2.
So in essence in table1 I have key1, year and in table2 I have key1, key2 and I am interested in those key2-cases that have more than one key1 linked to it where years are the same.
SELECT query.key2
FROM (
SELECT DISTINCT a.key1, b.key2
FROM table1 AS a JOIN table2 AS b ON a.key1=b.key1 JOIN table1 AS c ON
a.key1=c.key1
WHERE a.year=c.year)
AS query
GROUP BY query.key2
HAVING COUNT(*)>1
I tried it joining table1 twice and fiddling around with various JOIN and WHERE clauses (the one on show being the simplest and most naive one) but the query still returns key2-doubles whose key1 cases are linked to different years. It is simple enough if you give a distinct year value in where clause (and drop second table1 join as unnecessary) but I don't want to go through all years manually one by one. I was thinking some kind of iterative loop that changes the value of the year in where clause could do the trick (and be heavy computationally) but I don't really know how to go around doing it, haven't done any loops in SQL ever.
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Sep 19, 2007
Hi,
I have three tables:
1 Order Details
2 Product Info
3 Received Qty
The query is pretty simple however I'm getting incorrect results.
The query grabs a load of information (including a SUM statement) from the order details tbl.. this is INNER JOIN ed to the products tbl to match an ID field which grabs some extra info from the product info tbl.
all fairly straightforward and works without a problem..
However I now need to add in the received qty tbl (as the name suggests this keep a track of the qty's of items received)
I need to join this tbl to the order details tbl based on a unique ID from the orders tbl and then SUM together all of the entries in that received qty tbl for that item.
Result is I get a single record which shows the qty ordered (from the order details tbl), and the total received (from the received qty) tbl
These are held in a seperate tbl as an order can be deliveryed in several stages.
Here is my statement:
SELECT PDS_Login.Supplier_Products.ProductName, PDS_Login.Supplier_Products.ProductCode, dbo.Suppliers_POs_Details.POID,
dbo.Suppliers_POs_Details.PODetailsID, dbo.Suppliers_POs_Details.Qty, dbo.Suppliers_POs_Details.PricePerItem,
dbo.Suppliers_POs_Details.PoDetailsStatus, dbo.Suppliers_POs_Details.PoDateExpected, dbo.Suppliers_POs_Details.PODateReceived,
SUM(dbo.Suppliers_POs_Details.Qty * dbo.Suppliers_POs_Details.PricePerItem) AS LineTotal, SUM(dbo.Suppliers_POs_Details_Received.Qty)
AS QtyReceived
FROM dbo.Suppliers_POs_Details INNER JOIN
PDS_Login.Supplier_Products ON dbo.Suppliers_POs_Details.ProductID = PDS_Login.Supplier_Products.ProductID LEFT OUTER JOIN
dbo.Suppliers_POs_Details_Received ON dbo.Suppliers_POs_Details.PODetailsID = dbo.Suppliers_POs_Details_Received.PODetailsID
WHERE (dbo.Suppliers_POs_Details.POID = @POID)
GROUP BY dbo.Suppliers_POs_Details_Received.Qty, PDS_Login.Supplier_Products.ProductName, PDS_Login.Supplier_Products.ProductCode,
dbo.Suppliers_POs_Details.POID, dbo.Suppliers_POs_Details.PODetailsID, dbo.Suppliers_POs_Details.Qty, dbo.Suppliers_POs_Details.PricePerItem,
dbo.Suppliers_POs_Details.PoDetailsStatus, dbo.Suppliers_POs_Details.PoDateExpected, dbo.Suppliers_POs_Details.PODateReceived,
dbo.Suppliers_POs_Details_Received.Qty
The problem is, if there is more than one relating record in teh Received Qty tbl instead of that being added together as I want, two results appear...
It's obviously something simple but I can't seem to figure it out - anyone point me in the right direction?
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Jul 28, 2007
I want to select all usernames from tlbUsers which practice a certain sport.I also have a table UsersAndSports:UserID intSportID intI therefore need an inner join statement:select username from(SELECT ROW_NUMBER() OVER (ORDER BY au.LastActivityDate DESC) as RowNum,ud.username from tblusers usinner join tblUsersAndSports uas on uas.usercode=us.usercode and (uas.sportID=3 or uas.sportID=4)WHERE us.UserName <>'' )as MemberInfo WHERE RowNum between (@startRowIndex+1) AND (@startRowIndex+@maximumRows)The problem lies in the usage of the ROW_NUMBER command. I need that in order to effectively page through my records, but it also makes thatI cant make a distinct selection as each RowNum is unique....:SIn case the user would practice 2 sports, the query would return 2 rows...if I place a distinct in front of the username as such:select distinct username fromThe query would return each user only once...BUTBUTBUT: my startrowindex and maximumrows apply to the results that can be found in the MemberInfo selection..so lets say my startrowindex would be 0 and maximumrow 5if my 1st query (without distinct) was to return:johnjohnjohnjohnmikemikerobmy 2nd query (with distinct) would return:johnmikewhereas I want it to return:johnmikerobWhat can I do?
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Apr 25, 2006
I would like to make inner join with results from different exec %procedureName% calls.
thanks.
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Sep 21, 2006
I have a SELECT Statement that I am using that is pulling from two tables. There won't always be results in the second table so I made a LEFT OUTER JOIN. The problem I am having is that I need to have three conditions in there:WHERE (employee.emp_id = @emp_id) AND (request.requested_time_taken = 'FALSE') AND (request.request_end_date >= GETDATE()))The two conditions from the request table are causing the entire query to return NULL as the value. I need help trying get a value whether or not there are any results in the request table.Here is the full select statement:SELECT (SELECT SUM(ISNULL(request.request_duration, '0')) AS Expr1
FROM employee LEFT OUTER JOIN
request AS request ON employee.emp_id = request.emp_id
WHERE (employee.emp_id = @emp_id) AND (request.requested_time_taken = 'FALSE') AND (request.request_end_date >= GETDATE()))
AS dayspending
FROM employee AS employee_1 LEFT OUTER JOIN
request AS request_1 ON employee_1.emp_id = request_1.emp_id
WHERE (employee_1.emp_id = @emp_id)
GROUP BY employee_1.emp_id, employee_1.emp_begin_accrual, employee_1.emp_accrual_rate, employee_1.emp_fname, employee_1.emp_minitial,
employee_1.emp_lname
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Aug 10, 2015
I have two queries as below;
SELECT EventID, Role, EventDuty, Qty, StartTime, EndTime, Hours
FROM dbo.tblEventStaffRequired;
and
SELECT EventID, Role, StartTime, EndTime, Hours, COUNT(ID) AS Booked
FROM tblStaffBookings
GROUP BY EventID, Role, StartTime, EndTime, Hours;
How can I join the results of the two by matching the columns EventID, Role, StartTime and EndTime in the two and have the following columns in output EventID, Role, EventDuty, Qty, StartTime, EndTime, Hours and Booked?
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Mar 29, 2008
Hi,
I have a query written in SQL 2000 which returns incorrect result. The query uses left outer join and a view. I read an issue related to this in one of microsoft bug report in this article http://support.microsoft.com/kb/321541.
However, there's a slight difference in the sympton second bullet wherein instead of a expression the query returns a fixed string for one of the column value.
Although the issue mentioned in article seems to be fixed. The later one still seems to be reproducible even with Service Pack 4. However, this issue doesn't appear in SQL Server 2005.
Here's the query to reproduce this error.
Code Snippetcreate table t1 (pk1 int not null,primary key (pk1))
create table t2 (pk1 int not null,label1 varchar(10) not null,primary key (pk1))
go
insert into t1 values (1)
insert into t2 values (2, 'XXXXX')
go
create view V as
select pk1, 'ZZZZ' as label1 from t2
go
select A.pk1 as A_pk1, B.pk1 as B_pk1, B.label1 as B_label1
from t1 as A left outer join V as B on A.pk1 = B.pk1
go
This query is similar to the one mentioned in the article except that in the SELECT clause of CREATE VIEW statement I am passing a fixed value for column "label1".
I just want to confirm that this is an issue and no fix is available for this so far.
Regards,
Naresh Rohra.
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Mar 5, 2015
I have a lookup table, as below. Each triggercode can have several service codes.
TriggerCodeServiceCode
BBRONZH BBRZFET
BBRONZH RDYNIP1
BBRONZP BBRZFET
BCSTICP ULDBND2
BCSTMCP RBNDLOC
I then have a table of accounts, and each account can have one to many service codes. This table also has the rate for each code.
AccountServiceCodeRate
11518801DSRDISC -2
11571901BBRZFET 5
11571901RBNDLOC 0
11571901CDHCTC 0
17412902CDHCTC1 0
14706401ULDBND2 2
14706401RBNDLOC 3
What I would like to end up with is a pivot table of each account, the trigger code and service codes attached to that account, and the rate for each.
I have been able to dynamically get the pivot, but I'm not joining correctly, as its returning every dynamic column, not just the columns of a trigger code. The code below will return the account and trigger code, but also every service code, regardless of which trigger code they belong to, and just show null values.
What I would like to get is just the service codes and the appropriate trigger code for each account.
SELECT @cols = STUFF((SELECT DISTINCT ',' + ServiceCode
FROM TriggerTable
FOR XML PATH(''), TYPE
).value('(./text())[1]', 'VARCHAR(MAX)')
,1,2,'')
[Code] ....
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May 14, 2007
Hi
I have a strange issue here.
Both the input datasets of the merge join are sorted . Everything works fine if the dataset doesn't contain speacial characters like - (hipen).
This is the sorted dataset.ASI311_3ASI311_3ASI312ASI311ASIKit1ASIKit1
Merge Joiner has to look for ASI311 and finds it in the list and everything works as expected. But if the dataset is changed to
ASI311_3ASI311_3ASI-312ASI311ASIKit1ASIKit1
Then it doesn't find the ASI311 in the above dataset ?
Only change between the two datasets is the - (hipen) which is added in one of the field. Does SSIS has a differenent precedence of the special characters than that of the Database. Both the datasets are on SQLServer.
Can anyone point out the issue here?
Thankyou
Vidya
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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 1, 2007
hi, like, if i need to do delete some items with the id = 10000 then also need to update on the remaining items on the with the same idthen i will need to go through all the records to fetch the items with the same id right? so, is there something that i can use to hold those records so that i can do the delete and update just on those records and don't need to query twice? or is there a way to do that in one go ?thanks in advance!
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Mar 25, 2015
I have four tables: Customer (CustomerId INT, CountyId INT), County (CountyId INT), Search(SearchId INT), and SearchCriteria (SearchCriteriaId INT, SearchId INT, CountyId INT, [others not related to this]).
I want to search Customer based off of the Search record, which could have multiple SearchCriteria records. However, if there aren't any SearchCriteria records with CountyId populated for a given Search, I want it to assume to get all Customer records, regardless of CountyId.
Right now, I'm doing it this way.
DECLARE @SearchId INT = 100
SELECT * FROM Customer WHERE
CountyId IN
(
SELECT CASE WHEN EXISTS(SELECT CountyId FROM SearchCriteria WHERE SearchId = @SearchId)
THEN SearchCriteria.CountyId
[Code] .....
This works; it just seems cludgy. Is there a more elegant way to do this?
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Feb 12, 2008
Hello. I currently have a website that has a table on one webpage. When a record is clicked, the primary key of that record is transfered in the query string to another page and fed into an sql statement. In this case its selecting a project on the first page, and displaying all the scripts for that project on another page. I also have an additional dropdownlist on the second page that i use to filter the scripts by an attribute called 'testdomain'. At present this works to an extent. When i click a project, i am navigated to the scripts page which is empty except for the dropdownlist. i then select a 'testdomain' from the dropdownlist and the page populates with scripts (formview) for the particular test domain. what i would like is for all the scripts to be displayed using the formview in the first instance when the user arrives at the second page. from there, they can then filter the scripts using the dropdownlist.
My current SQL statement is as follows.
SelectCommand="SELECT * FROM [TestScript] WHERE (([ProjectID] = @ProjectID) AND ([TestDomain] = @TestDomain))"
So what is happening is when testdomain = a null value, it does not select any scripts. Is there a way i can achieve the behaivour of the page as i outlined above? Any help would be appreciated.
Thanks,
James.
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May 14, 2008
Hi All,
I have a stored proc which is executing successfully...but the results of that stored proc are displaying in the Messages Tab instaed of results Tab. And in the Results Tab the results shows as 0..So, Any clue friends..it is very urgent..I am trying to call this stored proc in my Report in SSRS as well but the stored proc is not displaying there also...Please help me ASAP..
Thanks
dotnetdev1
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Jun 18, 2008
Hi all, I have the following SQLDataSource statement which connects to my Gridview:<asp:SqlDataSource ID="SqlDataSourceStandings" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString %>" SelectCommand="SELECT P.firstName, P.lastName, T.teamName, IsNull(P.gamesPlayed, 0) as gamesPlayed, IsNull(P.plateAppearances,0) as plateAppearances, IsNull( (P.plateAppearances - (P.sacrifices + P.walks)) ,0) as atbats, IsNull(P.hits,0) as hits, P.hits/(CONVERT(Decimal(5,2), IsNull(NullIF(P.atbats, 0), 1))) AS [average], (P.hits + P.walks)/(CONVERT(Decimal(5,2), IsNull(NullIF( (P.atbats + P.sacrifices + P.walks) , 0), 1))) AS [OBP], (P.hits - (P.doubles + P.triples + P.homeRuns) + (2 * P.doubles) + (3 * P.triples) + (4 * P.homeRuns)) / (CONVERT(Decimal(5,2), IsNull(NullIF(P.atbats, 0), 1))) AS [SLG], P.singles, P.doubles, P.triples, P.homeRuns, P.walks, P.sacrifices, P.runs, P.rbis FROM Players P INNER JOIN Teams T ON P.team = T.teamID ORDER BY P.firstName, P.lastName"></asp:SqlDataSource>There are 8 teams in the database, and somehow the average and obp results are as expected for all teams except where T.teamID = 1. This doesn't make sense to me at all! For example, I get the following results with this same query: First NameLast NameTeamGPPAABHAVGOBPSLG1B2B3BHRBBSACRRBI
BrianAustinHope83432230.7187500.7352941.15625014612201221
GabrielHelbigSafe Haven62119141.0000000.9375002.1428576404111519
MarkusJavorSafe Haven82927200.8695650.8000001.21739114501021218
RobBennettMelville83029240.8275860.8333331.55172411904102117
AdamBiesenthalSafe Haven82929210.9130430.9130431.56521712631001015
ErikGalvezMelville82625180.7200000.7307691.24000011322101015 As you can see, all teams except for Safe Haven's have the correct AVG and OBP. Since AVG is simply H/AB, it doesn't make sense for Gabriel Helbig's results to be 1.00000. Can anyone shed ANY light on this please?Thank you in advance,Markuu ***As a side note, could anyone also let me know how I could format the output so that AVG and OBP are only 3 decimal places? (ex: 0.719 for the 1st result)***
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Oct 19, 2007
Hi,
I have a web form that lets users search for people in my database they wish to contact. The database returns a paged set of results using a CTE, Top X, and Row_number().
I would like to give my users to option of removing individual people from this list but cannot find a way to do this.
I have tried creating a session variable with a comma delimited list of ID's that I pass to my sproc and use in a NOT IN() statement. But I keep getting a "Input string was not in a correct format." Error Message.
Is there any way to do this? I am still new to stored procedures so any advice would be helpful.
Thanks
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Jan 30, 2008
Hi, when I copy and paste results from query analyzer into Excel it appears that values with zeroes at the end loose the zeroes. Example, if I copy and paste V128.0 into an Excel cell it comes out as V128 or if I copy 178.70 it displays as 178.7 - any ideas? I'm using SQL Enterprise Manager for 2000.
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May 22, 2015
I have two xml source and i need only left restricted data.
how can i perform left restricted join?
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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.
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.
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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
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?
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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:
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?
Thanks,
john
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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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