Complex Query / Advice Needed
Jul 20, 2005
Hello!
I'm seeking advice on a rather complex type of query I need to build
in an Access ADP (SQL-Server 7). There are four tables:
tblPeople
ID(PK)PRENAME
---------------
1Thomas
2Frank
3Chris
tblInventoryClasses
ID(PK)INVENTORYCLASS
----------------------
1Car
2Phone
tblInventoryItems
ID(PK)relInvClass(FK)ITEM
-----------------------------------
11Dodge Viper
21Chrysler
32Nokia
42Samsung
tblPeopleInventory
ID(PK)relPeople(FK)relInvItem(FK)
--------------------------------------
112
213
321
423
534
In this example the last table tells me that
Thomas owns a Chrysler (class Car) and a Nokia (class Phone).
Can someone tell me how to write a query or a stored procedure which
produces a resultset like this:
qryOwners
PeopleCarPhone
-----------------------------
ThomasChryslerNokia
FrankDodge ViperNokia
Chris[NULL]Samsung
The main idea is that I need to be able to iterate such a collection.
It is guranteed that one "People" only owns one or zero "Car" and one
or zero "Phone".
I guess that it might be impossible to design a stored procedure with
such a variable amount of columns (in this case, each item from
tblInventoryClasses would mean another column).
Ary there any possibilities in accomplishing this without creating
temporary tables?
Any help would be really appreciated ;-)
Greetings,
Christoph Bisping
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Nov 2, 2004
Hi,
I have a sql table, over 30 milion recs, with the following fields:
(id1 int, id2 int, itemsCollection varchar(100), myText TEXT)
I have also sql table, with the following fields: (item varchar(10), rate int)
I need to write a query that returns the following info: id1, id2, itemsCollection, item, rate, myText
The output need to be ordered as:
- Get id1 & id2 with the bigest rate
- output all the recs for the id1 & 2, ordered by rate (sub order)
eg
Main table:
id1 id2 itemsCollection myText
1 1 'a,b' 'count-11-a,B - max = 15 additional txt'
1 1 'a,b' 'count-11-a-B - max = 15'
1 1 '' 'count-11'
1 1 'a,c' 'count-11-a,C - max = 20'
2 8 'c,d' 'count-28-C-d - max = 20 additional txt'
2 8 'c,d' 'count-28-C-d - max = 20'
2 8 'd' 'count-28-D - max = 5'
3 2 'a,d' 'count-32-A-d - max = 10'
3 2 '' 'count-32'
Rates table:
item rate
a 10
b 15
c 20
d 5
'' 0
RequestedOutput:
itemsCollection item rate id1 id2 myText
a,c c 20 1 1 count-11-a,C - max = 20
a,b b 15 1 1 count-11-a,B - max = 15 additional txy
a,b b 15 1 1 count-11-a,B - max = 15
0 1 1 count-11
c,d c 20 2 8 count-28-C-d - max = 20 additional txt
c,d c 20 2 8 count-28-C-d - max = 20
d d 5 2 8 count-28-D - max = 5
a,d a 10 3 2 count-32-A-d - max = 10
0 3 2 count-32
Thanks!
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Jul 23, 2005
I have been working with SQL for a while...but I am stumped. I can notseem to get my arms around this query....can anyone help...Here it is:Table = 12 rows, 4 columns (id, name, amount, date)row1 = 771, "steve", $50.00, "01/01/2005"row2 = 772, "steve", $100.00, "01/11/2005"row3 = 773, "steve", $200.00, "01/11/2005"row4 = 774, "dave", $300.00, "01/01/2005"row5 = 775, "dave", $400.00, "01/12/2005"row6 = 776, "dave", $500.00, "01/12/2005"row7 = 777, "mike", $600.00, "01/01/2005"row8 = 778, "mike", $700.00, "01/13/2005"row9 = 789, "mike", $800.00, "01/13/2005"row10 = 790, "chuck", $900.00, "01/01/2005"row11 = 791, "chuck", $950.00, "01/14/2005"row12 = 792, "chuck", $975.00, "01/14/2005"I need a query that returns (1) ONE ROW PER NAME based on the MOSTRECENT DATE and returns the correct corresponding information. Thekeys to this question are the following:1. The query needs to return ONE ROW PER NAME2. I do not want to use a First() function (in MS Access)3. Even though (2) two DATE for each NAME are the same, i want thequery to return one record and whatever record it returns, i have to beable to have all the corresponding records (id, name, amount, anddate). I recorgnize that the DATE is ambiguous and that SQL may returnone or the other...but that is ok.4. The return set should include (4) four rowsAny help with this would be thoroughly appreciated...
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Mar 28, 2008
Table:GRoupAllocation
______________________
GroupId (Primarykey)
GroupName
TableystemAllocation
_______________________
SystemId(Primarykey)
SystemName
GroupId (foreignkey)
TableeviceAllocation
_______________________
DeviceId (Primarykey)
DeviceName
SystemId (foreignkey)
_______________________
TableensorAllocation
_______________________
SensorId (Primarykey)
SensorName
GroupId (foreignkey)
SystemId (foreignkey)
deviceid(foreignkey)
_______________________
Table:GRoupAllocation
______________________
GroupId GroupName
1 Group1
2 Group2
3 GRoup3
4 Group4
TableystemAllocation
___________________________
SystemId SystemName GroupId
1 system1 1
2 system2 2
3 system3 3
4 system4 2
5 system5 1
TableeviceAllocation
___________________________
DeviceId DeviceName SystemId
1 Device1 1
2 Device3 3
3 Device4 2
TableensorAllocation
____________________________________________
SensorId SensorName GroupId SystemId DeviceId
1 sensor1 1 1 1
3 sensor3 2 2
4 sensor4 3 3 3
my results should be like this:
Results:
___________________________________________________________________
GroupName SystemName DeviceName SensorName
___________________________________________________________________
Group1 system1 Device1 sensor1
Group1 null null sensor2
GRoup2 system2 null sensor3
GRoup2 system4 null null
Group3 system3 Device3 sensor4
Group4 null null null
so i need to populate the results in treeview.my treeview looks lika this:
Group1
|____System1
|________Device1
|_______sensor1
|_______system5
Group2
|____System2
|________Device1
|_______sensor1
|____System4
|____Device4
like this i need to populate. i need to show all the groupname and belonging systemName and belonging devicename and belonging sensorname
so please give me query for this complex operation please
criteria's
1.GRoup can have systems and system can have devices and device can have sensors
2.GRoup can have systems and systems can have sensors[no device]
3.GRoup can have systems and systems can have devices [no sensor]
4.GRoup can only have system [no device, no sensor]
5.GRoup can have only sensor[no system, no device]
so please give me query for this. not stored procedures.i need query for this
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Jun 1, 2007
Hi everyone,
My hoster hosts asp.net but does not yet support sql 2005 only sql 2000 and access I want to use either of the starter kits. I am confused on what is needed to make the changes to make either sql 2000 or access work. I know enough that the connection strings will need to change my concern is code. Is there strings that I will need to find and change in the application. I sure would appreciate any and all advice. Thank you for your help.
DKB
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Jul 14, 2006
I€™d appreciate an advice about the following data mining scenario. A bank institution has customers and keeps tracks of the customer demographics data (e.g. income, age, etc). A customer could have purchased one or more products (checking, savings, CD, and other accounts). My task is to predict the likelihood for a customer to purchase a new product. For example, if the custom has checking and savings accounts, what€™s the likelihood for the customer to purchase a CD account so we can offer this product do the customer.
My questions:
What data mining task (segmentation, classification, etc) does this requirement represent?
What algorithm(s) is best suited for this task?
For a given customer, will I be able to predict the buy probability for all products or do I need to query the mining model to predict one product at the time?
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Jan 5, 2007
I need some advice on a project that I am working on...
First, here is what I am trying to achieve: A Web Form with two controls: A DropDownList with two items added at design time (Fruits and Vegetables) and an empty ListBox. When the user chooses a "category" from the DropDownList, the ListBox will be populated with a list of either "Fruits" or "Vegetables" retrieved from a SQL database. (Note: Since the data in the SQL database must be converted and formatted programatically, simply databinding the ListBox will not work here.)
I believe that I can do this with the following code (stolen from an MSDN article):'Create ADO.NET objects.
Private myConn As SqlConnection
Private myCmd As SqlCommand
Private myReader As SqlDataReader
Private results As String
'Create a Connection object.
myConn = New SqlConnection("Initial Catalog=Northwind;" & _
"Data Source=localhost;Integrated Security=SSPI;")
'Create a Command object.
myCmd = myConn.CreateCommand
myCmd.CommandText = "SELECT FirstName, LastName FROM Employees"
'Open the connection.
myConn.Open()
myReader = myCmd.ExecuteReader()
'Concatenate the query result into a string.
Do While myReader.Read()
results = results & myReader.GetString(0) & vbTab & _
myReader.GetString(1) & vbLf
Loop
'Display results.
MsgBox(results)
'Close the reader and the database connection.
myReader.Close()
myConn.Close()
Now here is the part that I am not sure about: Is the FormLoad event the best place to put this code? If I do, is this not a lot of overhead (creating, opening and closing a connection) everytime there is a page refresh/PostBack? Would I be better off putting this code in the DropDownList SelectedIndexChanged event? Although that seems like it could make the process of selecting a category take a fairly long time.
Finally, if the is a better way of doing this, I am certainly open to suggestions.
All advice is greatly appreciated.
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Jun 27, 2001
Our backups run using a stored proceedure called sp_fullbackup. This takes a dump of every database to a device each night. The only problem is that it overwrites the previous nights backup, due to the way it has been written:
DUMP DATABASE master TO @bkupdevice WITH NOUNLOAD , INIT , SKIP
How do I change the syntax so that it will retain the previous 3 backups?
Thanks
Derek
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Nov 15, 1999
I could use some sound advice regarding replication. (Or a better avenue to take if available)
I have a production server and a *live* server.
90% of the updates are done on my production server. When needed I update the live server by completing overwriting everything with the data on the local machine. (This is because there has been numerous changes to the database design as well as the data but this should no longer be the case.)
Now updates are taking place on both servers meaning they should both be identical.
The problem I see is that something like a snapshot or merge replication could never be done. Since the same id's can be created on both machines I see no way that the software can tell them apart.
So is it best to update one server and then send the request to the other to update the same record (or insert/delete etc) or is it better to use something like DTS or transactional replication to accomplish the same task?
I dunno, kinda in the dark at present but any advice on the subject would be very helpful.
Thanks,
-John
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May 14, 2004
Hello,
We are developing a software for a logistic company, which will have around 1000 branches, and we need to synchronize the database(SQL Server) between all the branches using the database at web server, i.e the branches can get the new data from the web server,as well as push the data at the web server, please tell us how can we accomplish this task,
Thanks
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Jul 20, 2005
Dear GroupA while ago I've asked how paging is possible and have read the articles onaspfaq.com. Great work, esp. the speed comparison of all the differenttechniques. Thank you to everyone who has responded to my post. SomewhowGoogle didn't let me reply to the thread!All of the methods described work perfectly fine until I'm trying toimplement a WHERE or ORDER BY DESC on a particular field. E.g. Create allpages but sort on a date field DESC doesn't start with the lowest date onthe first page and the highest date on the last page but all dates mixed up.As a workaround I'm at first using a cursor to populate a temporary tablee.g. SELECT * FROM MyTable WHERE MyField1 = Condition ORDER BY MyField2which only contains the data I would like to use to create the pages. I'musing a cursor since I read that a normal SELECT to poulate the temporarytable doesn't always guarantee that rows are inserted in the correct order.Next I'm creating the individual pages with the Count and Page.Rank methodoff the temporary table.This method is not the best in performance and I'm sure there must beanotherway to perform paging with filtering and sorting. I'm grateful for any tippsyou have.Thanks for your time & efforts!Martin
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Jan 10, 2008
Hi,
I'm hoping somebody can help me here as i'm struggling to find any information elsewhere on the net. We have recently purchased a new server, the rough specs are:
2 X Quad-Core Xeon E7320 2.13GHz 4Mb Cache
32Gb PC2-5300 DDR II RAM
We are planning to install the 64 Bit version of SQL Server 2005. We want to use the server for a number of purposes.
Building and weekly processing of 2 complex data marts (approx size is 1Tb each)
Processing and querying of 2 Analysis Services databases that will be built from these data marts. These will be queried by no more than about 15 users (no more than about 5 simultaneously).
Relational querying of the data marts themselves (same users as above)
My problem is that I am not sure of the best way to configure SQL Server. Should I use 2 separate instances? How should the processors/memory be shared between SQL Server/Analysis Services? My main priority is the performance of the OLAP querying. However, I also want the weekly processing and any ad-hoc SQL querys run against the marts to be efficient.
Any advice would be very much appreciated.
Kind Regards,
David.
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Nov 1, 2007
This message is similar to a previous post, but no one seems to have an answer to it so I thought I should try to solve my problem in another way.
I have to use a pass through query to access db2. I cannot get the four-part name to work.
I want to simplify things for the developers. I can't figure out how to make one stored procedure or view to handle all the columns the developers may need to filter by or return. Is the best practice to just make multiple views or stored procedures to in each database to handle each query needed?
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Apr 20, 2006
I am writing a report in RS and my query is supposed to pull transactional records from a certain date (yesterday).
The table I am querying contains roughly 1.5 million records. This is on an AS400 dB2 system. Mostly I use ODBC with no problems, however this query ran for about two hours and was still running before I killed it.
I am thinking of using SSIS to copy the records into SQL. If I go this approach (which should be much faster), is there a way to just copy over differential records each day?
Or does anybody have any other suggestions? What is Linking a Server?
Thanks for the information. I am using SQL 2005
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Mar 28, 2008
Table:GRoupAllocation
______________________
GroupId (Primarykey)
GroupName
Table:SystemAllocation
_______________________
SystemId(Primarykey)
SystemName
GroupId (foreignkey)
Table:DeviceAllocation
_______________________
DeviceId (Primarykey)
DeviceName
SystemId (foreignkey)
_______________________
Table:SensorAllocation
_______________________
SensorId (Primarykey)
SensorName
GroupId (Primarykey)
SystemId (foreignkey)
_______________________
Table:GRoupAllocation
______________________
GroupId GroupName
1 Group1
2 Group2
3 GRoup3
4 Group4
Table:SystemAllocation
___________________________
SystemId SystemName GroupId
1 system1 1
2 system2 2
3 system3 3
4 system4 2
5 system5 1
Table:DeviceAllocation
___________________________
DeviceId DeviceName SystemId
1 Device1 1
2 Device3 3
3 Device4 2
Table:SensorAllocation
____________________________________________
SensorId SensorName GroupId SystemId DeviceId
1 sensor1 1 1 1
3 sensor3 2 2
4 sensor4 3 3 3
my results should be like this:
Results:
___________________________________________________________________
GroupName SystemName DeviceName SensorName
___________________________________________________________________
Group1 system1 Device1 sensor1
Group1 null null sensor2
GRoup2 system2 null sensor3
GRoup2 system4 null null
Group3 system3 Device3 sensor4
Group4 null null null
so i need to populate the results in treeview.my treeview looks lika this:
Group1
|____System1
|________Device1
|_______sensor1
|_______system5
Group2
|____System2
|________Device1
|_______sensor1
|____System4
|____Device4
like this i need to populate. i need to show all the groupname and belonging systemName and belonging devicename and belonging sensorname
so please give me query for this complex operation please
criteria's
1.GRoup can have systems and system can have devices and device can have sensors
2.GRoup can have systems and systems can have sensors[no device]
3.GRoup can have systems and systems can have devices [no sensor]
4.GRoup can only have system [no device, no sensor]
5.GRoup can have only sensor[no system, no device]
so please
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Jul 20, 2007
How do most people handle database searches for things like a product database? What I mean by that is your typical product table may look like:
ProductIDProductTitleProductDescriptionProductCategoryIDEtc...
Assuming you have a Full Text Catalog set up on the ProductDescription field, would you use Dynamic Sql or a Stored Procedure?
I'm wrestling with this because I haven't found a good way to either parse a parameter in SQL to make a stored procedure work with the same flexibility as Dynamic TSQL, and I would prefer not to have any direct access to the table from the application.
My other option (which to me isn't a great one) is to have a fairly large number of optional "keyword" parameters in the stored procedure and then parse them on the application side...this is less than favorable in that in theory someone could pass more keywords than I've allotted in my stored procedure.
How would you approach this challenge?
Thanks in advance.
Ryan
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Feb 27, 2008
hi,
iam thinking of changing my ajax slideshow so that it gets the data from the databse. currently i am finding it hard to add text functianlity the way i want with the slide show.
what my query is, that if i to using a datalist can i add javasscript functionality to the data being retrived. for example, currently i have written some javascript so that a series of text is diplayed one after the other in a sequence from just one button click. so if im pulling data out of a databse can i still add this javascript functionality to it? i hope this makes sense, if it doesnt then i am willing to elaborate. please can any one offer any advice or examples or any suggestions on how i can do this. any help is much appricated as i am struggling to find a solution as i orinally wanted to be able to add this javascript functionality with the play button of the slide show but i couldnt find a solution.also i think its better to use some kind of database as i can use the editing funtions visual web developer offers
thank you
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Jun 27, 2004
I can't connect to any instance of MSDE on my laptop using my web app. I duplicate the whole process on another local machine and have no problems. I'm using DNN, but it's not a problem with a connection string.
Over the last week I've had to rebuild this laptop - reformating and all. I'm running win xp pro, vs'03. I've tried this on msde2000sp3a & msde2000rela. Everthing is fully patched, updated, and current.
I'm working on two pcs at the same time with identical environments, doing one step on one keyboard and then the other:
I take one set of fresh DNN files and install them on each pc.
create a new db, user with dbo rights.
create a new virtual directory in iis.
alter the dotnetnuke.sln, dotnetnuke.vbproj.webinfo to reflect the path to the local site.
alter the web.config file with the connection string.
browse to the website (this is how dnn launches, creating the db from scripts, etc.)
At this point my desktop pc works great and I've got a new instance of DNN.
My laptop does launch dnn, but it can't connect to the db and says there's a problem with the connection string - but the only difference in the strings is the instance name - which isn't spelled wrong!!!!
So I'm led to believe that there is something wrong with the setup on the laptop which was just rebuilt.
It's got .net 1.1, msde2000sp3a, winxppro sp1. I've uninstalled and reinstalled all the components I can think of.
What would you do??? I'm completely out of ideas on this.
Do I format the hd and start again? That would hurt, but I've tried everthing else I can think of.
Oh, here's the other rub. I can create a system dsn, test the connection - and it works! I know that point's toward dnn, but like I've said I believe I've ruled that out.
Thanks for any advice...
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Aug 10, 2007
Hi, hoping I can get a few view on a question I have relating to the above.
I am new to Stored Procedures and Triggers and I am trying to understand 'best practice' a little better. Here is my question: If I have a table that stores information, and when any field in that table is updated (and changes) I would like to inactive the row, prior to change and then add the change by way of a new, active row. This way I can see what it was before and that it's inactive, and what the active value is.
Hope this makes sense, if this is the wrong way to manage change history any suggestions would be appreciated.
A second question I have is as follows: If I have a table that stores a number, based on that number, what would be the best way to create new records in a different table that pulls from the first table. Where the number stored in table 1 represents how many times the record is to be created in the second table.
Thanks. If anyone needs more data, please feel free to ask, I will help as best as I can and appreciate any advice & comments that you can give.
Paul
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Jul 20, 2005
Hello Specialists !Please help me - i need advice in importing textual data to SQL Server.I am using DTS with a simple process : Text(source)->Connection.I want to increase speed of importing because i have to import 4GB (1000char lines lenght) of data.Do you have any tips for me ?Best regards,Manu
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Sep 21, 2004
This concerns eligibility healthcare information. A member can have multiple rows in the table showing they are eligible for different date ranges with different health plans. eff_date and term_date are the fields in this table. Term_date can be NULL.
I need a WHERE statement that shows members
1) eligible between 1/1/2004 and 8/15/2004
(term_date is null or term_date >= '8/15/2004')
and eff_date <='1/1/2004'
2) members are allowed only one gap in this timeframe of up to 45 days. *NEED HELP
3) a gap of 1 day should not be counted as a gap in enrollment. *NEED HELP
Any help on #2 and #3 would be appreciated.
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Nov 13, 2006
Hello,
I am having difficulty to find the right SQL query to create a View as i illustrate below.
Senario:
Criteria Table
Idn
Key1
Key2
Key3
TagId
1
A
C
B
100
2
A
NULL
B
200
3
B
D
NULL
300
Data Table
DataId
Key1
1
A
2
B
SubData Table
SubDataId
DataId
Key2
Key3
1
1
C
B
2
1
Z
B
3
1
X
B
4
2
D
Z
And below is my expected View:
TagId
Key1
Key2
Key3
100
A
C
B
200
A
Z
B
200
A
X
B
300
B
D
Z
I managed to get query that will be able to get above result, however it is teribbly slow. it took 1 minutes to query 1000 records from the view that i have created. My records are roughly around 80K++.
I would really appreciate if anyone could help me to make if faster or point me where i did wrong.
Below is sample T-SQL that which i can illustrate my situation:
set nocount on
create table #Criteria
(
idn int
,Key1 char(1)
,Key2 char(1)
,Key3 char(1)
,TagId int
)
create table #Data
(
DataId int
,Key1 char(1)
)
create table #SubData
(
SubDataId int
,DataId int
,Key2 char(1)
,Key3 char(1)
)
insert #Criteria (idn, Key1, Key2, Key3, TagId)
values(1, 'A', 'C', 'B', 100)
insert #Criteria (idn, Key1, Key2, Key3, TagId)
values(1, 'A', NULL, 'B', 200)
insert #Criteria (idn, Key1, Key2, Key3, TagId)
values(1, 'B', 'D', NULL, 300)
insert #Data(DataId, Key1)
values (1, 'A')
insert #Data(DataId, Key1)
values (2, 'B')
insert #SubData(SubDataId, DataId, Key2, Key3)
values (1, 1, 'C', 'B')
insert #SubData(SubDataId, DataId, Key2, Key3)
values (2, 1, 'Z', 'B')
insert #SubData(SubDataId, DataId, Key2, Key3)
values (3, 1, 'X', 'B')
insert #SubData(SubDataId, DataId, Key2, Key3)
values (4, 2, 'D', 'Z')
select #Data.Key1
,#SubData.Key2
,#SubData.Key3
from #Data
join #SubData
on #Data.DataId = #SubData.DataId
/** here is the query logic i used in the view **/
select min(#Criteria.TagId)
,ConsolidatedData.Key1
,ConsolidatedData.Key2
,ConsolidatedData.Key3
from #Criteria
left join ( select #Data.Key1
,#SubData.Key2
,#SubData.Key3
from #Data
join #SubData
on #Data.DataId = #SubData.DataId ) as ConsolidatedData
on nullif(#Criteria.Key1, ConsolidatedData.Key1) IS NULL
and nullif(#Criteria.Key2, ConsolidatedData.Key2) IS NULL
and nullif(#Criteria.Key3, ConsolidatedData.Key3) IS NULL
group by ConsolidatedData.Key1
,ConsolidatedData.Key2
,ConsolidatedData.Key3
drop table #Criteria, #Data, #SubData
P/s: i urgently need your feedback on this one.
Thank You!!!
sibikos@hotmail.com
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Feb 1, 2007
Hi,Is there a programmatic wasy to convert the results of a sql data set to xls, csv, etc. Ideally a user would be able to make a selection to view the data (result set has, E.g. make, model, year, condition viewed in a datagrid or similar control) and then be able to export the file to the format they choose, and have a download box popup from the browser to download the file.E.g. Export this data to: __ XLS __ CSV __TXT . I know DTS can do this but any advice on how to encapsulate this in a C# web app woudl be greatly appreciated! Thanks!
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Mar 12, 2005
HI,
I'm still on the steep side of the learning curve with ASP.NET. I've looked through a number of threads on this forum, and have gotten pieces of the answer, but need help getting past a roadblock.
I haven't been able to get a simple test application to connect to the Pubs database loaded on my system running MSDE. The only control in the application is a WebDataForm created by the Wizard. Everything works well (even the Preview Data form the Data menu loads and displays the correct data), except when the form is viewed in a browser. Click the load button and an error:Login failed for user 'NT AUTHORITYNETWORK SERVICE'.
Similar stories are common on this forum, and I tried to address the problem. I'm quite sure it's a autherization or authentication problem. I have Windows Server 2003 (with IIS 6.0), VS.NET 03 and MSDE as the SQL server on the same box. The MSDE server is using Windows Security mode. I Created a new user called ASPNET on the Windows Server. I added a login to the SQL Server 'WinServerNameASPNET' using windows auth. Still get the same login failed message.
Is there something I'm missing? Do I have to add a new user to IIS?
For the record, what users/settings do I need to have in Windows, SQL-Server and IIS, get past this login problem.
Thanks for answering this basic question - one more time.
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Jun 2, 2008
I'm very green with SQL so I could do with some advice please.
I need to pull some data from a table based on the year portion of a datetime field, so far I've got this...
USE MfgSys803
SELECT orderdate, ordernum FROM orderhed
WHERE ((SELECT CONVERT(VARCHAR(4),GETDATE(),111)) = (SELECT CONVERT(VARCHAR(4),ORDERDATE,111) FROM orderhed))
... the field 'orderdate' is the datetime. The purpose of the WHERE statement is to get the current year fromt he system and then compare this to the current year of the field 'orderdate'.
Unfortunately I get the error...
Msg 512, Level 16, State 1, Line 3
Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression.
... the 'SELECT CONVERT' portions of the WHERE work fine on thier own but I can't use them together.
Hopefully this makes sense, thanks :)
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Aug 26, 2006
We have a couple of MS SQL Server 2000/2005 databases with a bunch of..NET clients written in C#, but may want to replace the dbserver withpostgres instead. The clients will still run on Windows, hopefully withas few changes as possible.We don't have any stored procedures or triggers, so all we need to portare the tables/index definitions.What are the most common issues/problems people run into on the clientside? My guesses are stuff like- identity columns- transaction handling(autocommited vs. implicit)- date and datetime- general error handling and error codesAnything else?I've googled for migration guides and howto's, but without success.Pointers to such are appreciated.Boa
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Nov 12, 2006
Hi all,
I have a situation where my Visual C# application presents a number of fields. In order to update a student object, I wish to call a stored proc. 1 or more fields can be updated... And If one is left null, then I don't want to update it, but instead I want to keep the old value.
I am really wondering if I am approaching this the right way. The following stored proc does what I want it to do, however I'm thinking there may be a faster way...
Here it is:
-- Update a student, by ID.
DROP PROCEDURE p_UpdateStudent
CREATE PROCEDURE p_UpdateStudent
@ID INT,
@NewFName VARCHAR(25),
@NewOName VARCHAR(25),
@NewLName VARCHAR(25),
@NewDOB DATETIME,
@NewENumber VARCHAR(10),
@NewContactAID INT,
@NewContactBID INT
AS
BEGIN
SET NOCOUNT ON;
-- DECLARE THE OLD VALUES
DECLARE @FName AS VARCHAR(25)
DECLARE @OName AS VARCHAR(25)
DECLARE @LName AS VARCHAR(25)
DECLARE @DOB AS DATETIME
DECLARE @ENumber AS VARCHAR(10)
DECLARE @ContactAID AS INT
DECLARE @ContactBID AS INT
-- Get all of the old values
SELECT @FName = FName FROM TBL_Student WHERE ID = 10000
SELECT @OName = OName FROM TBL_Student WHERE ID = 10000
SELECT @LName = LName FROM TBL_Student WHERE ID = 10000
SELECT @DOB = DOB FROM TBL_Student WHERE ID = 10000
SELECT @ENumber = ENumber FROM TBL_Student WHERE ID = 10000
SELECT @ContactAID = ContactAID FROM TBL_Student WHERE ID = 10000
SELECT @ContactBID = ContactBID FROM TBL_Student WHERE ID = 10000
-- USE ISNULL to set all of the new parameters to the provided values only if they are not null
-- Keep the old ones otherwise.
SET @NewFName = ISNULL(@NewFName, @FName)
SET @NewOName = ISNULL(@NewOName, @OName)
SET @NewLName = ISNULL(@NewLName, @LName)
SET @NewDOB = ISNULL(@NewDOB, @DOB)
SET @NewENumber = ISNULL(@NewENumber, @ENumber)
SET @NewContactAID = ISNULL(@NewContactAID, @ContactAID)
SET @NewContactBID = ISNULL(@NewContactBID, @ContactBID)
-- Do the update
UPDATE TBL_Student
SET FName = @NewFName,
OName = @NewOName,
LName = @NewLName,
DOB = @NewDOB,
ENumber = @NewENumber,
ContactAID = @NewContactAID,
ContactBID = @NewContactBID
WHERE
ID = @ID
END
GO
So yeah it works. But As you can see I wish to keep an old copy of the values to perform checks pre update....
Is there any faster way, or am I on the right track? I need a pro's advice :) (before i write all of my procs!!)
Thanks all.
Chris
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Apr 16, 2008
In my enrv. DBA just migrated SQL Server 2000 Databases from WINDOWS 2000 to WINDOWS 2003 Enterprise Edition and the same SQL version. The problem which i need to analyse
1. Why the full backup size is occupying only 70GB when DB size is 120GB?
Here is the situation
Full Backup is taken once every day ---- 70gb
Diff Backup Taken every 3 hrs till 5 PM ----- size is 50GB
Transaction log backed up every 10 min uptill 8 PM ----- not a big size
I am really confused as to why Full DB Backup is taking only 70GB.............Can some one please throw a Light on how the SQL Server 2000 Backup functions.
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Aug 29, 2007
Hello everyone,
Here's my situation...
I'm running a web service which involves 51 seperate servers and databases.
There are fifty licensee servers (One for each US state) and one corporate server.
Each night I need to upload sales and membership data from the licensee's databases to the corporate database to compile reports.
The application platform I'm using is ASP.NET 2.0 and the the database is SQL2005 express.
I want this process to be run automatically, so I believe it's a scheduled windows service I need to setup up in .NET to make the data transfers.
If anyone has already set something up like this, or knows the steps to take? I would love to have your input.
Thanks in advance,
Robert
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Nov 15, 2006
I am working on two versions of an application, one of which will be awindows forms application (which will need to be redistributable) andthe other will be a web application.I have MS Visual Studio 2005 (along with the developer's edition of MSSQL Server), but not MS Access. I also have MySQL, PostgreSQL, Sun'sapplication server, Tomcat and Apache web server. I am working onWindows XP Pro, and have installed the .NET 3 SDK and all relevantrelated products I could find (e.g. 2 extensions packages for VisualStudio).I have one MS Access database, to which my users should have read onlyaccess. I have, and have used, a tool for importing MS Accessdatabases into MySQL. I expect that SQL Server has a similar utilityhidden somewhere (where I haven't yet looked, though I HAVE beenlooking - obviously in the wrong places). I have located a similarutility for importing MS Access databases into PostgreSQL. I have notyet decided which servers to use for the web version, but that isanother story, for which I may raise another thread in due course (butI welcome suggestions which may reduce the effort required givenrequired effort for the windows forms app).My problem is for the windows form aplication (intended for use by asingle family). I expect to use ADO.NET. The question is, should Iimport the Access database into MS SQL, and redistribute it, along withMS SQL Server Express (or is that necessary), or distribute it just asan Access database and use the jet engine to access it. A relatedquestion is, "Does ADO.NET support creating new databases for a givenengine?" Imagine a recipe database. It is easy enough to create a SQLscript that creates all the required tables, indices, foreign keys,&c., but can I submit that SQL script to an ADO.NET object, along witha file name, and have it create, e.g., an Access database with thesupplied name. Or do I have to create a database file with nothing init other than the schema?I have more questions, but they'll have to wait.ThanksTed
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Jul 20, 2005
I am currently working on a PHP based website that needs to be able to drawfrom Oracle, MS SQL Server, MySQL and given time and demand other RDBMS. Itook a lot of time and care creating a flexible and solid wrapper and amdeep into coding. The only problem is a noticed VARCHAR fields being drawnfrom SQL Server 2000 are being truncated to 255 characters.I searched around php.net and found the following :Note to Win32 Users: Due to a limitation in the underlying API used by PHP(MS DbLib C API), the length of VARCHAR fields is limited to 255. If youneed to store more data, use a TEXT field instead.(http://www.php.net/manual/en/functi...ield-length.php)The only problem with this advice is Text fields seem to be limited to 16characters in length, and I am having similar results in terms of truncationwith other character based fields that can store more than 255 characters.I am using PHP 4.3.3 running on IIS using the php_mssql.dll extensions andthe functions referenced here http://www.php.net/manual/en/ref.mssql.php.What are my options here? Has anybody worked around this or am I missingsomething obvious?James
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Jan 30, 2008
Greetings!
I would like to create a database for keeping track of payroll data for employees where the supervisors (job coaches) on our workshop floor can use a Pocket PC device to record the hourly employee data on the fly. Then at the end of the day, the supervisor can place the device in a cradle of some sort and synch the newly entered data into the main database.
I'm guessing that SQL Server Compact edition would be perfect for this type of task? Is that correct? Can someone give me recommendations on how to go about setting this up? What should I use as the main database? SQL Server? Access? Any advice is appreciated!
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Feb 13, 2004
Hello
I have a table (part of our fault reporting system) which I now wish to produce statistics from.
I want to be able to display graphs showing how many calls have been registered per day, per week, per month etc.
The key thing here, is that I have a table of calls, one of the fields in there is the dateadded field (the date a call was registered on the system)
I therefore need to get the number of calls logged per day.
I have a feeling this will either involve the use of COUNT, GROUP BY or SELECT DISTINCT (or all of the above) but don't know how to get what I want.
Ideally I will end up with something like the following
10/02/04 10
11/02/04 8
12/02/04 18
With the date as one column, and the number of calls logged that day as another
Thanks in advance for your help
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