Hi everybody,
In SQL Server is there a quick way to automatically insert empty value instead of NULL? I have a long Insert-SQL command with LEFT JOIN and don't want to use ISNULL for every field.
Researching on this in the meantime myself and I believe there is no way.
Thanks in advance.
I have a situation where I'm trying to add a text field to allowlarge Notes to be linked to record in an existing table (rather thansimply adding the new field into the table since relatively fewrecords will have the Note)Tables are basically:T1IDInvNumFK----------------------40|142|243|244|1T2MatDetIdEqpNote-------------------------------------------------40|text44|additional NoteI'm trying to create a subform that will allow the user to view/updaterecords in T1 (there are other fields in T1 that aren't relevant tothe problem) and also add a record into the T2.EqpNote field or edit arecord that already exists.This query works in Access (allows me to type in text into the EqpNotefield and automatically create a new record in T2 with the T1.Id valuein the T2.MatDetId field) :SELECT T1.ID, T1.InvNumFK, T2.EqpNote, T2.MatDetIdFROM T1 LEFT JOIN T2 ON T1.ID = T2.MatDetIdWHERE (((T1.ID)=10230));but when I try to 'translate' it into a version that I can use for thesubform in the adp (it's an Access 2000 project with a SQL Server 2000backend) the 'child' record does not get added into T2.Here's the record source I'm using for the form in the adpSELECT T1.ID, T1. InvNumFK, T2.MatDetId, T2.EqpNote FROM T1 LEFTOUTER JOIN dbo.T2ON T1.ID =T2.MatDetIdWHERE T1.InvNumFk = XX--'master' tableCREATE TABLE [dbo].[T1] ([ID] [int] IDENTITY (1, 1) NOT NULL ,[InvNumFK] [int] NOT NULL) ON [PRIMARY]GOALTER TABLE [dbo].[tblBSMaterialDet] WITH NOCHECK ADDCONSTRAINT [PK_T1] PRIMARY KEY NONCLUSTERED([ID]) ON [PRIMARY]GO--Sub tableif exists (select * from dbo.sysobjects where id =object_id(N'[dbo].[T2]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)drop table [dbo].[T2]GOCREATE TABLE [dbo].[T2] ([MatDetId] [int] NOT NULL ,[EqpNote] [text] COLLATE SQL_Latin1_General_CP1_CI_AS NULL) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]GOALTER TABLE [dbo].[T2] WITH NOCHECK ADDCONSTRAINT [PK_T2] PRIMARY KEY CLUSTERED([MatDetId]) ON [PRIMARY]
View 1 Replies View RelatedHi All,
Im having a problem with a statement i cannot seem to get 2 left joins working at the same time 1 works fine but when i try the second join i get this error:-
Microsoft OLE DB Provider for ODBC Drivers error '80040e14'
[Microsoft][ODBC Microsoft Access Driver] Syntax error (missing operator) in query expression 'children_tutorial.school_id=schools.idx LEFT JOIN regions ON children_tutorial.region_id=region.idx'.
My SQL statment is as follows :-
SELECT children_tutorial.*,schools.schoolname,regions.rname FROM children_tutorial LEFT JOIN schools ON children_tutorial.school_id=schools.idx LEFT JOIN regions ON children_tutorial.region_id=region.idx
I am using an Access database i have tried all sorts to get it working and its driving me mad!! any help would be really appreciated.
Do somebody know how long (in chars) script(command) can be solved by SQL Command?
Thanks
To the wise,
This may be a very simple problem but it's been racking may brains for a while and I just can't seem to think it through clearly.
I'm trying to return a query which uses a left join and where. I'm hoping to get a result set which shows - let us says all the departments in a company. I would like to see all the department but only the names of department heads that earn 20.000+.
In MS Access I used a subquery. My subquery returned only departments with department heads that earned 20.000+ - I then left joined the departments table to that query - no problem.
With MSSQL I've tried IN, ANY, ALL but my result sets only returns the departments that earn 20.000+ and the employees for those particular departments.
I'm thinking there must be some way of doing this without having to use a union clause.
Thanks for taking the time to read this message through.
Sincerely,
Arthur Lambiris
My understanding of relevant topics as well as SQL Books Online definition of left outer joins is that each record in the left table will be retrieved and where no associated right record exists then null values will be displayed for records in the right hand table but I've obviously misunderstood and would be grateful if someone could show me how to produce the required effect.
My scenario is pretty simple: 2 tables DiningTables and Reservations with columns as follows:
DiningTables: TBL_ID and TBL_Location - TBL_ID is the primary key
Reservationss::RES_TBL_ID and RES_Diner_Name - RES_TBL_ID is the primary key
There are 8 records in DiningTables and 4 records in Reservations and the objective is obtain the following output:
TBL_ID RES_Diner_Name
1 Jones
2 Smith
3 Bloggs
4 Mack
5 null
6 null
7 null
8 null
The SQL query I used is
SELECT Reservations.RES_Diner_Surname, DiningTables.TBL_ID
FROM DiningTables LEFT OUTER JOIN
Reservations ON DiningTables.TBL_ID = Reservations.RES_TBL_ID
That query generates 11 rows as follows:
TBL_ID RES_Diner_Name
1 Jones
1 Smith
1 Bloggs
1 Mack
2 null
3 null
4 null
5 null
6 null
7 null
8 null
I'm clealry missing something incredibly obvious and I kinda feel like the village idiot and would be extremely grateful for a clue!!
Hi All,
This may be a stupid question. But I just want to make sure i'm going in right direction.
I wrote the following query. My purpose is to retrieve all the members who submitted loan applications.
I just want to make sure my query is right? Can anyone veryfy this query?
Do I have to use loanApplication table first instead of members. Also Do I need to use right outer joins instead of left outer joins?
Code Block
SELECT Member.CUMemberId, LoanApplication.SubmittedOn, Member.LastName, Member.FirstName, Member.MiddleName, LoanApplication.Amount,
LoanApplication.Decision, LoanApplication.Term, Rate.InterestRate, LoanApplication.Status, Member.CuStatus
FROM Member INNER JOIN
MemberLogon ON Member.Id = MemberLogon.MemberFK INNER JOIN
LoanApplication ON Member.LastLoanApplicationFK = LoanApplication.Id AND Member.Id = LoanApplication.MemberFK LEFT OUTER JOIN
Account ON Member.Id = Account.MemberFK AND LoanApplication.LoanFK = Account.Id LEFT OUTER JOIN
Rate ON LoanApplication.RateFK = Rate.Id
WHERE (LoanApplication.Status = 'Submitted')
Thanks
Hello,
I am working on a query that has 11 left join statements, some are hitting against reference data that has a small amount of records, whereas others not so small. From a performance standpoint, should I look at rewriting this query, and how would I do so? What is an alternative to left joins; any examples anyone has?
Thanks.
Hi,
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?
Any other sugestions?
Thank you,
Hugo Lopes
Could somebody tell me what is the secret of being able to write a SELECT statement having mulitple LEFT or RIGHT joins, I seem to get in trouble as soon as I add the second LEFT join, as I am obviously doing it wrong.
These are my tables, would somebody mind having a go,or explaining what do i need to be aware of in a case like this
emailDetails table ( emailID_PK,emailName,emailText,emailSubject,emailN otificationTypeID)
emailRecipients table (emailID_PK, RecipientID, SentToEmail)
luEmailNotificationTypes look up table (emailNOtificationTypeID_PK, emailNotificationTypeName)
Thanks
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.
Thanks,
Pete
Hi,
I am working a DTS package and I need to Join to completely differnet tables in such a way that I need to do an inline view and an Outer Join. In this current form, it drops all columns for a day if one of the inline views returns null.
SELECT 01 as WHSE_ID
, A.On_Time
, B.Early
, C.Late
, (D.AVG_Duration / (A.On_Time + B.Early + C.Late))AS AVG_Duration
, E.DelDate
, F.*
FROM
(SELECT COUNT(SDD_Status) AS On_Time
, SDD_Date as On_Time_Date
FROM SDD_Store_Delivery_Data_Table
WHERE SDD_Route LIKE '01%' AND SDD_Status = 'On Time'
AND SDD_Date < '12/19/2004' AND SDD_Date > '12/10/2004'
GROUP BY SDD_Date) a,
(SELECT COUNT(SDD_Status) AS Early
,SDD_DATE As Early_Date
FROM SDD_Store_Delivery_Data_Table
WHERE SDD_Route LIKE '01%' AND SDD_Status = 'Early'
And SDD_Date < '12/19/2004' AND SDD_Date > '12/10/2004'
GROUP BY SDD_Date) b,
(SELECT COUNT(SDD_Status) AS Late
, SDD_Date As Late_Date
FROM SDD_Store_Delivery_Data_Table
WHERE SDD_Route LIKE '01%' AND SDD_Status = 'Late'
AND SDD_Date < '12/19/2004' AND SDD_Date > '12/10/2004'
GROUP BY SDD_Date) c,
(SELECT SUM(CAST(SDD_Stay AS NUMERIC)) AS AVG_Duration
, SDD_Date As Stay_Date
FROM SDD_Store_Delivery_Data_Table
WHERE SDD_Route LIKE '01%'
AND SDD_Date < '12/19/2004' AND SDD_Date > '12/10/2004'
GROUP BY SDD_Date) d,
(SELECT DISTINCT(SDD_Date) AS DelDate
FROM SDD_Store_Delivery_Data_Table
WHERE SDD_Date < '12/19/2004' AND SDD_Date > '12/10/2004'
GROUP BY SDD_Date)e,
(SELECT *
FROM WAREHOUSE_METRICS
WHERE MTRC_DTE < '12/19/2004' AND MTRC_DTE > '12/10/2004'
AND WHSE_ID = 2
GROUP BY MTRC_DTE
, MTRC_ID
, WHSE_ID
, INVN_LVL_CS_CNT
, INVN_LVL_DLLR
, INVN_LVL_PLLT_CNT
, RCV_CS_CNT
, SHP_CS_CNT
, SRVC_LVL_PCT
, SCRTCH_CNT
, DROP_CNT
, RPLNSH_CNT
, DMG_CNT
, RET_CNT
, PICK_CYC_CNT
, PICK_ERR_CNT
, RSV_CHK_CNT
, ERR_CNT
, DLY_CS_VRNC
, DLY_DLLR_VRNC
, CMB_THRUPUT
, DELAY_MINS_CNT
, DELAY_PCT
, UNLOAD_AVG
, LABOR_AVG
, SELECT_HR_CNT
, CRT_USERID
, CRT_DTE_TME
, UPD_USERID
, UPD_DTE_TME) f
WHERE a.On_Time_Date = E.DelDate
AND B.Early_Date = E.DelDate
AND C.Late_Date = E.DelDate
AND D.Stay_Date = E.DelDate
AND F.MTRC_DTE = E.DelDate
GROUP BY E.DelDate
, A.On_Time
, B.Early
, C.Late
, AVG_Duration
, A.On_Time_Date
, B.Early_Date
, C.Late_Date
, D.Stay_Date
, F.WHSE_ID
, F.INVN_LVL_CS_CNT
, F.INVN_LVL_DLLR
, F.INVN_LVL_PLLT_CNT
, F.RCV_CS_CNT
, F.SHP_CS_CNT
, F.SRVC_LVL_PCT
, F.SCRTCH_CNT
, F.DROP_CNT
, F.RPLNSH_CNT
, F.DMG_CNT
, F.RET_CNT
, F.PICK_CYC_CNT
, F.PICK_ERR_CNT
, F.RSV_CHK_CNT
, F.ERR_CNT
, F.DLY_CS_VRNC
, F.DLY_DLLR_VRNC
, F.CMB_THRUPUT
, F.DELAY_MINS_CNT
, F.DELAY_PCT
, F.UNLOAD_AVG
, F.LABOR_AVG
, F.SELECT_HR_CNT
, F.CRT_USERID
, F.CRT_DTE_TME
, F.UPD_USERID
, F.UPD_DTE_TME
, F.MTRC_ID
, F.MTRC_DTE
Order By E.DelDate
Please excuse the length of the code but one of the tables has a lot of columns.
Can anyone tell me if it's possble to do a join on an inline view?
Any help would be greatly appreciated.
Thanks in advance,
John
Hello,
I am trying to understand the concept of left joins. I have the following query and am not sure about the left joins.
I am familiar with joins but the left join below is a little confusing.Below it seems like a third table is involved. Is this because there is no column to map to in the from table? Also, since tables sl and sc are mapped based on the SecurityID column and sl and ex do not have any common columns, table sc is mapped to ex using the left join? Which table's data will be returned based on the left join?
I checked the column type for the Exchange column(ex.LSECode) and it appears varchar(3).
SELECT SecurityID = sl.SecurityID
, Security = RTRIM(sec.Name) + ' - ' + RTRIM(sec.Description)
, Ticker = ISNULL(ids.RIC, ids.Ticker)
, Sedol = ids.Sedol
, ISIN = ids.ISIN
, Exchange = ex.LSECode
, Country = cty.iso_code
FROM #SecList sl
JOIN SecurityClassification sc
ON sl.SecurityID = sc.securityId
AND sc.source = 99
LEFT JOIN exchange_table ex
ON sc.ExchangeID = ex.exchange
Thanks in advance!!!
novicesql123
Hi,I'm curious about the computational complexity of a query I have. Thequery contains multiple nested self left joins, starting with a simpleselect, then doing a self left join with the results, then doing a selfleft join with those results, etc. What puzzles me is that the timerequired for the query seems to grow exponentially as I add additionalleft joins, which I didn't expect. I expected the inner select toreturn about 25 rows (it does), then I expected the self join to resultin about 25 rows (it does), etc. Each join just adds another column; itdoesn't add more rows. So the left part of the join is staying the samesize, and so is the right part of the join, since I'm always joiningwith the same table.So I would think the time for this query should be (time to join 25rows against the source table) * (num joins), but it seems to besomething like (num rows) ^ (num joins). Any ideas? I'm just trying tounderstand the system a little better. (But if you have any ideas aboutimproving the query, I'm always open to those, too.)The execution plan is what you'd expect: an index seek loop-joined withanother index seek, the results of which are merge-joined with anotherindex seek, the results of which are merge-joined with another indexseek, ad nauseum, until a final "compute scalar cost (39%)" and "select(0%)"For the brave and curious, I've pasted the query below.Thanksselect right(x.cp_yyyymm, 2)+'-'+left(x.cp_yyyymm, 4) as [Month],table0.cp_num_loans/1 as [AFCM9704], table1.cp_num_loans/1 as[AFC9104], table2.cp_num_loans/1 as [BFAT01C], table3.cp_num_loans/1 as[BFAT02B], table4.cp_num_loans/1 as [BFAT03D], table5.cp_num_loans/1 as[BFAT03E], table6.cp_num_loans/1 as [BFAT03F], table7.cp_num_loans/1 as[BFAT04A], table8.cp_num_loans/1 as [BFAT04C], table9.cp_num_loans/1 as[BFAT04D], table10.cp_num_loans/1 as [BFAT99C] from (((((((((((selectdistinct cp_yyyymm from cp_deal_history where cp_deal_id in('AFCM9704', 'AFC9104', 'BFAT01C', 'BFAT02B', 'BFAT03D', 'BFAT03E','BFAT03F', 'BFAT04A', 'BFAT04C', 'BFAT04D', 'BFAT99C') and cp_yyyymmbetween 200304 and 200504) as x left join (select cp_yyyymm,cp_num_loans from cp_deal_history where cp_deal_id='AFCM9704') astable0 on x.cp_yyyymm=table0.cp_yyyymm) left join (select cp_yyyymm,cp_num_loans from cp_deal_history where cp_deal_id='AFC9104') as table1on x.cp_yyyymm=table1.cp_yyyymm) left join (select cp_yyyymm,cp_num_loans from cp_deal_history where cp_deal_id='BFAT01C') as table2on x.cp_yyyymm=table2.cp_yyyymm) left join (select cp_yyyymm,cp_num_loans from cp_deal_history where cp_deal_id='BFAT02B') as table3on x.cp_yyyymm=table3.cp_yyyymm) left join (select cp_yyyymm,cp_num_loans from cp_deal_history where cp_deal_id='BFAT03D') as table4on x.cp_yyyymm=table4.cp_yyyymm) left join (select cp_yyyymm,cp_num_loans from cp_deal_history where cp_deal_id='BFAT03E') as table5on x.cp_yyyymm=table5.cp_yyyymm) left join (select cp_yyyymm,cp_num_loans from cp_deal_history where cp_deal_id='BFAT03F') as table6on x.cp_yyyymm=table6.cp_yyyymm) left join (select cp_yyyymm,cp_num_loans from cp_deal_history where cp_deal_id='BFAT04A') as table7on x.cp_yyyymm=table7.cp_yyyymm) left join (select cp_yyyymm,cp_num_loans from cp_deal_history where cp_deal_id='BFAT04C') as table8on x.cp_yyyymm=table8.cp_yyyymm) left join (select cp_yyyymm,cp_num_loans from cp_deal_history where cp_deal_id='BFAT04D') as table9on x.cp_yyyymm=table9.cp_yyyymm) left join (select cp_yyyymm,cp_num_loans from cp_deal_history where cp_deal_id='BFAT99C') astable10 on x.cp_yyyymm=table10.cp_yyyymm order by x.cp_yyyymm
View 4 Replies View RelatedHello,
I have a query with 11 left joins. Some hits against tables with small amounts of reference data, whereas others are not so small. Should I rewrite this in another way, as performance is a requirement on this one? Or, should I do it another way?
How would I rewrite left joins? Any examples?
Thanks.
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";
Until today, I was always under the impression that left vs. right was determined by which side of the comparison operator the table was located.
In other words:
LEFT JOIN LeftTable.ID = RightTable.ID
would pull all the records from LeftTable and those that matched from from RightTable and that:
RIGHT JOIN RightTable.ID = LeftTable.ID
would pull exactly the same result set but I was wrong. So, if it is not the table position in relation to the comparison operator, is it simply that the tables listed first in the FROM clause aren the ones "Left" of those subsequently entered?
Hi, I am trying to write a query that gets the percentage of students in specific racial groups in specific schools. Some ethnicity values of students are null so I have to use left joins. My query is below, when I run it I get the error "join expression not supported", I've tried a couple different ways of doing it but I always get that error or "syntax error in from clause". Can anybody help me with formatting multiple and nested left joins in general?
Thanks in advance.
drop table percentMinorities;
create view percentMinorities as
select s1.schoolid,
round(count(s2.studentid)/count(s1.studentid),2) as percentWhite,
round(count(s3.studentid)/count(s1.studentid),2) as percentBlack,
round(count(s4.studentid)/count(s1.studentid),2) as percentHispanic,
round(count(s5.studentid)/count(s1.studentid),2) as percentAsian
from
students as s1 left join
(students as s2 left join
(students as s3 left join
(students as s4 left join students as s5
on s4.studentid is not null and s5.ethnicity = 'A')
on s3.studentid is not null and s4.ethnicity = 'H')
on s2.studentid is not null and s3.ethnicity = 'N')
on s1.studentid is not null and s1.ethnicity = 'O'
group by s1.schoolid
I'm trying to write a 3 table query using two LEFT JOINs. Originally, I only had one LEFT JOIN and prior to the addition of the the third table (parts) this query worked. Now it doesn't. I think it has to do with my GROUP BY.
SELECT
quote.quote_id, parts.material, machining_operations.machine, machining_operations.per_roughing, machining_operations.per_of_machining,
machining_operations.programming_time, machining_operations.setup_time, machining_operations.cycle_time, machining_operations.notes
quote.part_name, quote.revision_no, quote.quantity, quote.initial_volume, quote.final_volume, quote.material_price, machining_operations.mo_id
FROM quote
LEFT JOIN machining_operations
ON machining_operations.quote_num = quote.quote_id
LEFT JOIN parts
ON parts.package_no = quote.package_no AND parts.part_name = quote.part_name
GROUP BY quote.quote_id
Hi,
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.
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.
Any ideas how I can fix this?
We have a view with many left joins. The original creators of this view might have been lazy or sloppy, I don't know. I have rewritten the query to proper inner joins where required and also nested left joins.
So rather then the following exemplary fragment
select <many items>
from A
left join B on B.id_A = A.id
left join C on C.id_B = B.idthis now looks like
select <many items>
from A
left join (B
join C on C.id_B = B.id
) on B.id_A = A.id
Compilation time of the original view was 18s, of the new rewritten view 4s. The performance of execution is also better (not counting the compile of course). The results of the query are identical. There are about 30 left joins in the original view.
I can imagine that the optimizer has difficulty with all these left joins. But 14s is quite a big difference. I haven't looked into detail in the execution plans yet. I noticed that in both cases the Reason for Early Termination of Statement Optimization was Time Out.
I have a field that contains data such as 'ACB00/02'. How would I write into a function that gathers a load of data together for me a peice of code that will grab only the first 2 chars of the afore mentioned value, So the result would be in the new created colum in a temp table 'AC'.
This is to occur over 7,000 records but they are not all AC, I just want the first two from every line.
Regards
Hello,
I have only started VBS and SQL a week ago so..
The scenario is that I have 1 SQL db and 3 tables as follows:
tblSAVDetails (columns SERVERS : SAVGroup : SAVParent)
tblSAVComputers (Columns SERVERS)
tblSAVResults (Columns SERVERS : SAVGroup : SAVParent)
The tblSAVDetails has raw data from all of our servers nationwide
The tblSAVComputers have a list of servers in our site
The SAVResults will store the results of the query
I want compare the list of servers in tblSAVComputers with the list contained in tblSAVDetails and IF it finds the server to then retrieve the details. However if it doesn't find the server I want to flag it (with a NULL or NA or somthing). After all that I want it to insert the results into tblSAVResults.
The SQL command I am using is:
---------
SELECT *
FROM tblSAVComputers LEFT OUTER JOIN
tblSAVDetails ON tblSAVComputers.SAVComputers = tblSAVDetails.SERVERS
---------
I have tried so many ways, but I just cant get it to work. I know how to insert data into a DB, but I just cant get this command to work in vbScript (it works fine if I run it directly on the SQL server)
Any help would be brilliant! If you need more info, please let me know.
Thanks
i am using visual web developer 2005 and SQL 2005 with VB as the code behindi am using INSERT command like this Dim test As New SqlDataSource() test.ConnectionString = ConfigurationManager.ConnectionStrings("DatabaseConnectionString1").ToString() test.InsertCommandType = SqlDataSourceCommandType.Text test.InsertCommand = "INSERT INTO try (roll,name, age, email) VALUES (@roll,@name, @age, @email) " test.InsertParameters.Add("roll", TextBox1.Text) test.InsertParameters.Add("name", TextBox2.Text) test.InsertParameters.Add("age", TextBox3.Text) test.InsertParameters.Add("email", TextBox4.Text) test.Insert() i am using UPDATE command like this Dim test As New SqlDataSource() test.ConnectionString = ConfigurationManager.ConnectionStrings("DatabaseConnectionString").ToString() test.UpdateCommandType = SqlDataSourceCommandType.Text test.UpdateCommand = "UPDATE try SET name = '" + myname + "' , age = '" + myage + "' , email = '" + myemail + "' WHERE roll 123 " test.Update()but i have to use the SELECT command like this which is completely different from INSERT and UPDATE commands Dim tblData As New Data.DataTable() Dim conn As New Data.SqlClient.SqlConnection("Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|Database.mdf;Integrated Security=True;User Instance=True") Dim Command As New Data.SqlClient.SqlCommand("SELECT * FROM try WHERE age = '100' ", conn) Dim da As New Data.SqlClient.SqlDataAdapter(Command) da.Fill(tblData) conn.Close() TextBox4.Text = tblData.Rows(1).Item("name").ToString() TextBox5.Text = tblData.Rows(1).Item("age").ToString() TextBox6.Text = tblData.Rows(1).Item("email").ToString() for INSERT and UPDATE commands defining the command,commandtype and connectionstring is samebut for the SELECT command it is completely different. why ?can i define the command,commandtype and connectionstring for SELECT command similar to INSERT and UPDATE ?if its possible how to do ?please help me
View 2 Replies View RelatedI 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.
Hi,
I'm seeing a problem with printing very long strings using the PRINT
command on a VARCHAR(MAX) variable. After a certain amount of
characters the string is truncated....it looks like the limit is at
around 8,000 characters.
Does anyone know of a solution or a workaround for this?
On my site users can register using ASP Membership Create user Wizard control.
I am also using the wizard control to design a simple question and answer form that logged in users have access to.
it has 2 questions including a text box for Q1 and dropdown list for Q2.
I have a table in my database called "Players" which has 3 Columns
UserId Primary Key of type Unique Identifyer
PlayerName Type String
PlayerGenre Type Sting
On completing the wizard and clicking the finish button, I want the data to be inserted into the SQl express Players table.
I am having problems getting this to work and keep getting exceptions.
Be very helpful if somebody could check the code and advise where the problem is??
<asp:Wizard ID="Wizard1" runat="server" BackColor="#F7F6F3"
BorderColor="#CCCCCC" BorderStyle="Solid" BorderWidth="1px"
DisplaySideBar="False" Font-Names="Verdana" Font-Size="0.8em" Height="354px"
onfinishbuttonclick="Wizard1_FinishButtonClick" Width="631px">
<SideBarTemplate>
<asp:DataList ID="SideBarList" runat="server">
<ItemTemplate>
<asp:LinkButton ID="SideBarButton" runat="server" BorderWidth="0px"
Font-Names="Verdana" ForeColor="White"></asp:LinkButton>
</ItemTemplate>
<SelectedItemStyle Font-Bold="True" />
</asp:DataList>
</SideBarTemplate>
<StepStyle BackColor="#669999" BorderWidth="0px" ForeColor="#5D7B9D" />
<NavigationStyle VerticalAlign="Top" />
<WizardSteps>
<asp:WizardStep runat="server">
<table class="style1">
<tr>
<td class="style4">
A<span class="style6">Player Name</span></td>
<td class="style3">
<asp:TextBox ID="PlayerName" runat="server"></asp:TextBox>
</td>
<td>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server"
ControlToValidate="PlayerName" ErrorMessage="RequiredFieldValidator"></asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td class="style5">
<td class="style3">
<asp:DropDownList ID="PlayerGenre" runat="server" Width="128px">
<asp:ListItem Value="-1">Select Genre</asp:ListItem>
<asp:ListItem>Male</asp:ListItem>
<asp:ListItem>Female</asp:ListItem>
</asp:DropDownList>
</td>
<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server"
ControlToValidate="PlayerGenre" ErrorMessage="RequiredFieldValidator"></asp:RequiredFieldValidator>
</td>
</tr>
</table>
Sql Data Source
<asp:SqlDataSource ID="InsertArtist1" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString %>" InsertCommand="INSERT INTO [Playerst] ([UserId], [PlayerName], [PlayerGenre]) VALUES (@UserId, @PlayerName, @PlayerGenre)"
ProviderName="<%$ ConnectionStrings:ConnectionString.ProviderName %>">
<InsertParameters>
<asp:Parameter Name="UserId" Type="Object" />
<asp:Parameter Name="PlayerName" Type="String" />
<asp:Parameter Name="PlayerGenre" Type="String" />
</InsertParameters>
</asp:SqlDataSource>
</asp:WizardStep>
Event Handler
To match the answers to the user I get the UserId and insert this into the database to.protected void Wizard1_FinishButtonClick(object sender, WizardNavigationEventArgs e)
{
SqlDataSource DataSource = (SqlDataSource)Wizard1.FindControl("InsertArtist1");
MembershipUser myUser = Membership.GetUser(this.User.Identity.Name);
Guid UserId = (Guid)myUser.ProviderUserKey;String Gender = ((DropDownList)Wizard1.FindControl("PlayerGenre")).SelectedValue;
DataSource.InsertParameters.Add("UserId", UserId.ToString());DataSource.InsertParameters.Add("PlayerGenre", Gender.ToString());
DataSource.Insert();
}
I have been working on this for a little bit and have gotten to this point. Below is the query in blue, the error in red. Now, from what I gather the error is telling me I can't insert a duplicate product code into tblProduct. Isn't that what the left join is exactly not doing, as in, the left join is inserting all records from Complete_records into tblProduct where the code is null(does not exist) in tblProduct? Or, is this an issue where the identity number, productID in tblProduct, isn't starting at the next number in turn?
Thanks.
Set Identity_Insert tblProduct on
DECLARE @MaxId int
SELECT @MaxID=MAX(productID)
FROM tblProduct
SELECT IDENTITY(int,1,1) AS ID,Complete_products.APNum, Complete_products.Title, Complete_products.CategoryID, Complete_products.Mountable, Complete_products.price,
Complete_products.Height, Complete_products.Width, Complete_products.IRank, Complete_products.frameable, Complete_products.Typ INTO #Temp
FROM Complete_products LEFT OUTER JOIN
tblProduct AS tblProduct_1 ON Complete_products.APNum = tblProduct_1.productCode
where tblProduct_1.productCode IS NULL
INSERT INTO tblProduct
(productID,productCode, productName, productNavID, CanBeMounted, productRetailPrice, productHeight, productWidth, Rank, CanBeFramed, ProductType)
SELECT @MaxID + ID, APNum, Title, CategoryID, Mountable, price,
Height, Width, IRank, frameable, Typ
FROM #Temp
(236752 row(s) affected)
Msg 2601, Level 14, State 1, Line 13
Cannot insert duplicate key row in object 'dbo.tblProduct' with unique index 'IX_tblProductt_productCode'.
The statement has been terminated.
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?
View 4 Replies View RelatedHi,
It seems inserting records takes a relatively long time. My guess is it needs time to allocate disk space for the extra space needed. Assuming this is true, are there any DB settings that allow auto space allocation in bigger chunk? I am looking for something like "DB growth factor" or " Table growth factor"
Thanks for any info.
Dear All,
I have created a table in my SQL server database, the problem i am facing is my insert query fails if i leave any form field empty (leave it blank). On my back-end table, only one field is mandatory, and others have been set with the constraint "allow null".
As per our business requirement, except one value is complusory while others are optional. If I enter all values in the form it works perfectly fine. Can you see in the code below - where am i possibly going wrong ?
<script language="VB" runat="server" > Sub Page_Load(Src As Object, e As EventArgs) If Page.IsPostBack Then Dim ConLath As SqlConnection Dim comLath As SqlCommand Dim insertcmd conLath = New SqlConnection("Data Source=SQLas;Initial Catalog=settle;User ID=sa;Password=password") ConLath.Open() insertcmd = "Insert into His_set values (@t_d,@s_p,@p_s,@v_oq,@i_oq,@v_qn,@i_qn,@v_qw,@i_qw)" comLath = New SqlCommand(insertcmd, ConLath) comLath.Parameters.Add(New SqlParameter("@t_d", SqlDbType.DateTime, 12)) comLath.Parameters("@t_d").Value = trade_date.Text comLath.Parameters.Add(New SqlParameter("@s_p", SqlDbType.Decimal, 8)) comLath.Parameters("@s_p").Value = sett_price.Text comLath.Parameters.Add(New SqlParameter("@p_s", SqlDbType.Decimal, 8)) comLath.Parameters("@p_s").Value = post_close.Text comLath.Parameters.Add(New SqlParameter("@v_oq", SqlDbType.Int, 8)) comLath.Parameters("@v_oq").Value = vol_oq.Text comLath.Parameters.Add(New SqlParameter("@i_oq", SqlDbType.Int, 8)) comLath.Parameters("@i_oq").Value = oi_oq.Text comLath.Parameters.Add(New SqlParameter("@v_qn", SqlDbType.Int, 8)) comLath.Parameters("@v_qn").Value = vol_qn.Text comLath.Parameters.Add(New SqlParameter("@v_qw", SqlDbType.Int, 8)) comLath.Parameters("@v_qw").Value = vol_qw.Text comLath.Parameters.Add(New SqlParameter("@i_qn", SqlDbType.Int, 8)) comLath.Parameters("@i_qn").Value = oi_qn.Text comLath.Parameters.Add(New SqlParameter("@i_qw", SqlDbType.Int, 8)) comLath.Parameters("@i_qw").Value = oi_qw.Text
Try comLath.ExecuteNonQuery() Catch ex As SqlException If ex.Number = 2627 Then Message.InnerHtml = "ERROR: A record already exists with " _ & "the same primary key" Else Message.InnerHtml = "ERROR: Could not add record, please " _ & "ensure the fields are correctly filled out" Message.Style("color") = "red" End If End Try
comLath.Dispose() ConLath.Close() End If End Sub
</script>
Here is the situation, please let me know if you have any tips:..TXT files in a share at \fooSPROCS run daily parses of many things, including data on that share. Theother day, we encountered rows in the TXT files which looked like:column1Row1data,column2Row1datacolumn1Row2data,column2Row2data...etc..However, column2 was about 6000 bytes of unicode. We are bulk insertinginto a table specifying nvarchar(4000). When it encounters high unicoderows, it throws a truncation error (16).We really need information contained in the first 200 bytes of the string incolumn2. However, the errors are causing the calling SPROC to abort.Please let me know if you have any suggestions on workarounds for thissituation. Ideally, we would only Bulk Insert a sub-section of column2 ifpossible.Thanks!/Ty
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