I have a page that will require several hundred update queries to be sent to the database. How much of a performance increase will i get by joining them all into one statement and sending them as a batch instead of running them one by one?
Thanks.
Hello:
What is the difference between:
select * from table1, table2 where ......
And
select * from table1 Inner Join table2 ....
Is there a performance difference or any other difference?
thanks
Hi,
Can you give the equivalent query for the following Oracle query :
SELECT col2, col3 FROM submission,
lkup so
WHERE so.txt (+) = TRIM(col2)
ANDso.pid (+) = 'SO'
ANDso.cde (+) = 'RW'
In the above query a constant value is used in JOIN, so I am not aware of how to use the JOIN clause for the above constant value ( 'SO' , 'RW' )
Upto my knowledge about JOIN query equivalents :
Oracle query :-
select *from test1 a, test2 b where a.sno(+) = b.col
Equivalent SQL Server query :-
select *from test1 a JOIN test2 b on a.sno = b.col
Hope the above is correct. Here my doubt is, if in the above query, b.col is replaced by a constant value say 'abcd' , then what will be the table name used in right of the JOIN clause. Or any other equivalent for this is available ?
Eg :-
Oracle query :-
select *from test1 a, test2 b where a.sno(+) = 'abcd'
Thanks,
Sam
Hi,
Can you give the equivalent query for the following Oracle query :
SELECT col2, col3 FROM submission,
lkup so
WHERE so.txt (+) = TRIM(col2)
AND so.pid (+) = 'SO'
AND so.cde (+) = 'RW'
In the above query a constant value is used in JOIN, so I am not aware of how to use the JOIN clause for the above constant value ( 'SO' , 'RW' )
Upto my knowledge about JOIN query equivalents :
Oracle query :-
select *from test1 a, test2 b where a.sno(+) = b.col
Equivalent SQL Server query :-
select *from test1 a RIGHT JOIN test2 b on a.sno = b.col
Hope the above is correct. Here my doubt is, if in the above query, b.col is replaced by a constant value say 'abcd' , then what will be the table name used in right of the JOIN clause. Or any other equivalent for this is available ?
Eg :-
Oracle query :-
select *from test1 a, test2 b where a.sno(+) = 'abcd'
Thanks,
Sam
Hi,
First, my knowledge of MDX is very limited :o
I am wondering if it is possible to return the result of 2 different queries as one. Similarly, like using UNION in SQL. I looked into the MDX UNION but it works on sets.
Basically, I have 2 queries; one with territory sales and one with region sales. I would like to return the results of all the territories followed by the sales of the region in one go.
Thanks in advance.
I am trying to do an inner join on two sub-queries, and I can't figure out what I am doing wrong here. I keep getting syntax errors:
Code:
SELECT * FROM
(SELECT SSN
FROM [1099_PER]
INNER
JOIN ( SELECT SSN, name4, count(*) from [1099_PER]
group by SSN, name4
[Code] .....
I get a wo_ID and want to query company data. I have the following tables, work_orders (has wo_ID, wo_name and install_id), install_ids (has install_id, comp_id) and customers (comp_id, company_name). The query process goes like this: I get a wo_ID and I need to find the install_id that corresponds with that wo_ID in that same work_orders table. Then take that install_id and find out the comp_id that corresponds with that install_id from the install_ids table. Finally take that customer_id and link it to comp_id in the customers table to find out company data. I need to join it multiple times to get my final data. I have a simple one that works right now with one join and using the install_id, but I don't know how to expand it with multiple joins. Thanks.
View 4 Replies View RelatedI am having a problem with a query,I am not sure if i would use a join or a subquery to complete thisproblem.I have two queries, and i need to divide one by the other, but i cantseem to get anytype of join to work with them.Here is the situation.I have a projectDB table that has a list of different projects foreach employee to work on.Each project has an employee assigned to it.The start date is null until the employee starts to work on it.I want to find how many percent of all their projects that eachemployee is working on.In other words:I want to divide query A by query B to see how many percent ofprojects each employee is working on.Query A count of projects that are being worked because they have adate per employee:SELECT employee, COUNT(employee) AS cntFROM projectDBGROUP BY employee, project_start_dateHAVING (NOT (project_start_date IS NULL)) //notice the NOTQuery B: Total amount of project per employee:SELECT employee, COUNT(employee) AS cntFROM projectDBGROUP BY employee, project_start_dateAny ideas?
View 4 Replies View Relatedhi thereanyone had an idea to join following 2 queries to 1????----- QUERY 1 ---------------------------------------------SELECT TMS_CaseF_2.Name AS TCDomain_0,TMS_CaseF_3.Name AS TCDomain_1,TMS.CaseF.Name AS TCFolder_2,TMS_CaseF_1.Name AS TCFolder_3,TMS.TestCase.Name AS TCName_4,TMS_TestCase_1.Name AS TCName_5,TMS.LogFolder.Name AS PlannedLogFolder_6,TMS.Log.Name AS PlannedLog_7,TMS.CaseResult.RecordedCaseName AS TCRecordedName_8,TMS.TestPlan.Name AS Plan_9FROM((((((((((TMS.Build INNER JOIN TMS.LogFolder ON TMS.Build.UID =TMS.LogFolder.Build)INNER JOIN TMS.Log ON TMS.LogFolder.UID = TMS.Log.LogFolder)INNER JOIN TMS.CaseResult ON TMS.Log.UID = TMS.CaseResult.Log)INNER JOIN TMS.TestCase ON TMS.CaseResult.TestCase =TMS.TestCase.UID)LEFT JOIN TMS.CaseF ON TMS.TestCase.Parent = TMS.CaseF.UID)LEFT JOIN TMS.TestCase AS TMS_TestCase_1 ON TMS.TestCase.Parent =TMS_TestCase_1.UID)LEFT JOIN TMS.CaseF AS TMS_CaseF_1 ON TMS_TestCase_1.Parent =TMS_CaseF_1.UID)LEFT JOIN TMS.CaseF AS TMS_CaseF_2 ON TMS_CaseF_1.Parent =TMS_CaseF_2.UID)LEFT JOIN TMS.CaseF AS TMS_CaseF_3 ON TMS.CaseF.Parent =TMS_CaseF_3.UID)INNER JOIN TMS.TestPlan ON TMS.TestCase.TestPlan = TMS.TestPlan.UID)WHERE (((TMS.LogFolder.Name) Like 'TR1%')AND ((TMS.Build.Name)='Planning_VD10A'))ORDER BY TMS.CaseF.Name,TMS_CaseF_1.Name,TMS.TestCase.Name,TMS_TestCase_1.Name;------------------------------------------------------------------ QUERY 2 ---------------------------------------------SELECT TMS.CaseResult.RecordedCaseNameFROM ((TMS.Build INNER JOIN TMS.LogFolder ON TMS.Build.UID =TMS.LogFolder.Build)INNER JOIN TMS.Log ON TMS.LogFolder.UID = TMS.Log.LogFolder)INNER JOIN TMS.CaseResult ON TMS.Log.UID = TMS.CaseResult.LogWHERE (((TMS.LogFolder.Name) Like 'VD%')AND ((TMS.Build.Name)='VD10A IT_APP'));
View 1 Replies View RelatedHello 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
I have recently started working on Sql server management studio. I have been using MS access in the past. To link results of 2 queries in MS access I would open the query wizard and it would show me the list of saved queries and then I could join them as regular tables. Im trying to look for this option in management studio. When I open query designer in management studio I am only given the option to add existing tables, how can I add existing queries?
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Good morning!
Or good "whatever daytime you read this"!
SQL Server 2005 has this nice new feature Common table expression or CTE, which allows quite easy to define a "drill down" in recursive self join tables.
By recursive self join tables I mean this common example:
idPerson INT <--------|
idReportsTo INT ---------|
PersonName VARCHAR
A CTE to "go down" the tree from any entry point and find all subs to a parent entry is well documented. I managed to make myself a CTE and use it a lot!
What I find myself needing too often is:
a) Look up from a deep position and find the entry that is for example 3 steps above my reference in the branch
b) Look up from a deep position and find the one that is 2nd or 3rd level (absolute) from top of the tree in the branch
I did try quite some versions, but I cannot get it to work. Any idea how you do the "drill up" with a CTE or another SQL solution.
Of course performance is always needed, so I'd like to avoid the cursors I got it working with and use now. (It is not working good I admit...)
Cheers!
Ralf
We have the follwoing environment
Sql2005 64 bit edition standard edition servers
Sql2000 Sp3 enterprise edition servers
when we try to access a table in sql2000 from sql2005 using linked server, the query also uses inner joins and max()
it gives the follwoing error
"Msg 8180, Level 16, State 1, Line 1
Statement(s) could not be prepared.
Msg 207, Level 16, State 3, Line 1
Invalid column name 'Col1017'."
The query looks something like this
select *FROM [X.X.X.X.].HRDE.dbo.PS_HX_LVE_FRM_SRCH A, [X.X.X.X.].HRDE.dbo.PS_NAMES B
WHERE A.EMPLID = B.EMPLID
AND A.HX_LEAVE_STATUS = 'PND'
AND B.EFFDT IN (SELECT MAX(EFFDT) FROM [X.X.X.X.].HRDE.dbo.PS_NAMES WHERE EMPLID = A.EMPLID)
Required Output
Country Category
Internet Sales Amount
Internet Order Count
[code]....
I need to perform a SQL kind of Cross join to get the Total Count as a column along side as there are .net code and json structures defined that expects output in a certain format.
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?
I have an intermittent issue where some remote PC's occasionally fail to execute select queries that have a join or return multiple result sets, however simple one table select queries continue to work okay. When it does happen the PC's needs to be rebooted to get to work again. This may only happen some PC's while others continue to work away okay.
I am using a VB6 application and ADO to connect to the database and the error message I get is a General Network Error, Server Not Found when it fails to execute the query. I have ran SQL Profiler on the server and while simple select queries continue to run away okay, a query a join does not even seem to show up in the profiler. The program has been working fine for 15 years with 1000's of users and has only now become an issue on one site for a number of users. Have tried moving the database to a different server and swapping network cards on the local PC's but can't seem to find the cause. The processor and the memory don't seem to be under load, but I am not sure if there is something else in SQL that is causing it to hang under certain conditions.
There have been network analysts experts in to run scans on the network, but I have not had the results of this back yet. Other applications do not seem to be affected so if this analysis does not show up anything.
Is there any way to use a graphical designer to build your insert & update SQL statements in Enterprise manager? I mean Access has an EASY way to build them, surely SQL does too?
I would just build them in Access and copy the SQL, but then I'm stuck replacing all the "dbo_" with "dbo." and other little nuances.
In Access, if I want to update one table with information from another,all I need to do is to create an Update query with the two tables, linkthe primary keys and reference the source table(s)/column(s) with thedestination table(s)/column(s). How do I achieve the same thing in SQL?RegardsColin*** Sent via Developersdex http://www.developersdex.com ***
View 3 Replies View RelatedHi,
Trying to update a single value within a table, thus eliminating nulls. Another words, if the value is NULL update it with the next preceeding non-null value. In this example, 1 should be CO, 2 should be CO, 6 should be CO, 8 should be TT, and 10 should be TT.
For example,
1 NULL
2 NULL
3 CO
4 CO
5 CO
6 NULL
7 TT
8 NULL
9 TT
10 NULL
Any ideas? Thanks.
I'm new to adp w/ sql server but I have to use it on a project i'mdoing...One of the MUSTS for this project is the ability to update a 00 - 09text value with the appropriate text description from another table...Easy as pie in .mdb. Of course In the stored procedure it barks at meand tells me that an update query can only have one table.. ouch thathurts...I'm currently reading on the subject but this group has been veryhelpful in the past.....I found this link...http://www.sqlservercentral.com/col...stheeasyway.aspUnfortunetly I'm using MSDE not Enterprise so I don't think I can usethe query analyser.. But I tryed it in my Access ADP anywayit barked at me..I tried to go from this....SELECT dbo.LU_SEX.SEX_CODE, dbo.TEST.DEFECTS_DP1FROM dbo.TEST INNER JOINdbo.LU_SEX ON dbo.TEST.SEX_DP1 =dbo.LU_SEX.SEX_DECTo this...UPDATE dbo.TEST.SEX_DP1SET dbo.TEST.SEX_DP1 = dbo.LU_SEX.SEX_CODEFROM dbo.LU_SEX INNER JOINdbo.TEST ON dbo.LU_SEX.SEX_DEC =dbo.TEST.SEX_DP1Maybe I need a good book on this?Thanks,Charles
View 2 Replies View RelatedHelp, please. I am trying to update atable with this structre:CREATE TABLE Queue (PropID int, EffDate smalldatetime,TxnAmt int)INSERT Queue (PropID) SELECT 1INSERT Queue (PropID) SELECT 2INSERT Queue (PropID) SELECT 3....from this table...CREATE TABLE Txns (PropID int, TxnDate smalldatetime,TxnType char(1), TxnAmt int)INSERT Txns SELECT 1 '20000201', 'B', 100000INSERT Txns SELECT 1 '20020515', 'B', 110000INSERT Txns SELECT 1 '20020515', 'A', 120000INSERT Txns SELECT 1 '20020615', 'c', 130000....only certain txn types are okay, and they have an orderof preference...CREATE TABLE GoodTxnTypes (GoodTxnType char(1), Pref)INSERT GoodTxnTypes SELECT 'A', 1INSERT GoodTxnTypes SELECT 'B', 2The idea is to fill in the NULL fields in the Queue table,according to a rule -- the transaction must be the latesttransaction within a date window, it must be one of the goodtxn types, and if there are two txns on that date, choosethe txn by the preferred txn type (A is preferred over B,according to the field Pref).If the time window were 20020101 to 20030101, the txnselected to update the Queue table would be this one:INSERT Txns SELECT 1 '20020515', 'A', 120000 -- there aretwo in the time window that are type A or B; they areboth on the same day, so the 'A' is preferred.If the time window were 20000101 to 20010101, this wouldbe selected because it is the only A or B type txn inthe interval:INSERT Txns SELECT 1 '20000201', 'B', 100000I'm looking for a statement that starts...UPDATE Queue SET EffDate = ...., TxnAmt = .... (EffDate,in this table, is the same as TxnDate in the Txn table).Assume we have @FirstDate and @LastDate available.Help, please. I'm getting stuck with (a) a sub-query tofind the relevant Txn records, and (b) another sub-querywithin that to find the MAX(TxnDate) within the timewindow. Filtering the Txn records on the basis of theGoodTxnTypes table is easy, as is ordering what is returned.But I'm having trouble joining the sub-queries back to theQueue table on the basis of PropId.
View 1 Replies View RelatedBackground
SQL Server 2005 Standard 9.0.1399 64bit
Windows 2003 64-bit
8gb RAM
RAID-1 70gb HD 15K SCSI (Log Files, OS)
RAID-10 1.08TB HD 10K SCSI (Data Files)
Runs aproximately _Total 800 Transaction/Second
We deliver aproximately 70-80 million ad views / day
8 Clustered Windows 2003 32-bit OS IIS Servers running Asp.net 2.0 websites
All 8 servers talking to the one SQL server via a private network (server backbone).
In SQL Server Profiler, I see the following SQL statements with durations of 2000 - 7000:
select top 1 keywordID, keyword, hits, photo, feed from dbo.XXXX where hits > 0 order by hits
and
UPDATE XXXX SET hits=1906342 WHERE keywordID = 7;
Where the hits number is incremented by one each time that is selcted for that keyword ID.
Sometimes these happen so frequently the server stops accepting new connectinos, and I have to restart the SQL server or reboot.
Any ideas on why this is happening?
Regards,
Joe
I'm writing an application for Windows Mobile 5 / Pocket PC using VB.NET 2005. The database is connected using an instance of SqlCeConnection and updated by an SqlCeCommand.
The application can perform select queries on data originally entered into the database through Visual Studio, or perform update / insert queries at run time. Anything inserted or updated can be returned by a select query whilst the application is running, however, anything I have inserted or updated doesn't appear to be written to the SDF file and hence is not in the database after restarting the application.
Am I missing something that's different between performing queries on an SQL CE database on Pocket PC and an ODBC source in a normal Windows application?
At one of your client sides we have configured Always on with synchronous mode.Also we have schedule rebuild index and update statistics job which runs in night every alternate day. the issue is there are more then 100 sleeping queries which is blocking update statistics job.
I have to stop update statistics job manually once i come to office manually.
Once I have killed blocking sleeping query but then other sleeping query blocked it and so on.
I need to search for such SPs in my database in which the queries for update a table contains where clause which uses non primary key while updating rows in table.
If employee table have empId as primary key and an Update query is using empName in where clause to update employee record then such SP should be listed. so there would be hundreds of tables with their primary key and thousands of SPs in a database. How can I find them where the "where" clause is using some other column than its primary key.
If there is any other hint or query to identify such queries that lock tables, I only found the above few queries that are not using primary key in where clause.
Hi all,
Can someone please help me with this update statement?
UPDATE Stats
SET Stats.JobShownInResults = Stats.JobShownInResults + 1
WHERE Jobs.JobID IN
(
SELECT Query that returns IDs from Search criteria
)
From Stats
inner join Jobs
ON Jobs.JobId = Stats.JobID
I'm trying to increment a value in 'Stats' every time a job in 'Jobs' is returned in a search.
Any help much appreciated,
pete
In the last weeks I came to work with SQL Server more closely and - not being used to it - I stumbled over the sematics of an UPDATE statement using a JOIN (something which is not available in e.g. Oracle).I wonder what the difference between these two updates is:
Code:
update foo
set ..
from bar
where bar.fid = foo.id;
and
Code:
update foo
set ...
from foo f1
join bar on bar.fid = f1.id;
In both cases I have an inner join between foo and bar, but in the second one, foo is actually listed twice in the update statement. As far as I can tell, both carry out the same thing - at least with my test data.
Best Greetings,
i want to make an update query for a table but the where clause will check a join with other talbe
update table1 inner join table 2 on x.table1=y.table2 and y.table1= y.table2
set z='anything'
or shall it be
update table1
set z='anything'
where x in (select x from table2) and y in (select y from table2)
i dont know how the syntax be any idea plz ,also table 2 it will be derived from table1 in the form of
select x,max(y)
from table1
order by x
UPDATE sku
set ecomm = 1
from sku
join invt
on sku.style = invt.style
where invt.first_rcvd = '12/22/2014'
I keep getting an error using this query. It keeps failing at the "FROM" portion. What I want to do is update column ECOMM within table SKU if the STYLE has been received on a certain date.
in a table TBL1 I have to set DESCRIPTION for a TYPE1 equal to DESCRIPTION for a TYPE2 where their ID is equal in TBL1 and their key fields appear together in another table TBL2. In english, in TBL1 the description and id are equal but the type is different. a relationship between their key fields is shown in TBL2. Any thoughts on how to write this?
View 6 Replies View RelatedI am trying to update a file based on data retrieved from a join and performing a calculation prior to updationg my result field. I end up with "Column qualifier or table B undefined. "
can anyone see what my problem is?
update a
set a.yr2004 = (b.smal + b.smat) * a.qtypre
from commodityf a inner join itmrvb b
on a.i@stid = b.stid
and a.cinbr = b.itnbr
Here is my update statements which doesn't work, can you show me an example.
UPDATE zurnacik_user SET zurnacik_user.usergroupid=15
INNER JOIN zurnacik_userfield
ON zurnacik_user.userid = zurnacik_userfield.userid
WHERE zurnacik_userfield.field5 = "Kadýn"
AND zurnacik_user.usergroupid = 2
=================
ERROR: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE zurnacik_userfield.field5 = "Kadýn"
AND zurnacik_user.usergroupid = 2
SE' at line 4
=====
I from Turkey, Thank You...
Hello,I have two tables (table1 and table2). I want to set a flag in table1 foreach common row with table2. I use the following syntaxUPDATE table1 SET flag='Y' from table1 INNER JOIN table2 on (table1.a =table2.a) AND (table1.b = table2.b)However the situation arises where I may have a row in table2 that matcheswith two or more rows in table1. The requirement is that I only want toset the flag on a single row in table1.
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