Help Needed In Joing Tables
Apr 2, 2008
hi,
i have a table(Measurement) with the following columns
SensorId,Maximumvalue,MinimumValue,GroupId,SystemId,DeviceId.
so in the above column SensorId is ForeignKey of the Table Sensor which havs two columns(SensorId,SensorName)
so in the above column GRoupId is ForeignKey of the Table Group which havs two columns(GroupId,GroupName)
SystemId is ForeignKey of the Table System which havs two columns(SystemId,SystemName)
DeviceId is ForeignKey of the Table Device which havs two columns(DeviceId,DeviceName)
so my result should be as like as follows:
SensorId,SensorName,Maximumvalue,MinimumValue,GroupName,SystemName,DeviceName.
instesd of displaysing GroupId, SystemId,DeviceId i need to diplay the SensorName,GroupName,SystemName,DeviceName. so please give me some example query to join multiple tables please
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Mar 11, 2008
I need a bit of help writting a select statment and joining 4 differant talbes. I have used inner joins between two different tables before but never more then two tables.
Table layout (listing only the columns I want to pull):
Abbrevations.Short
Abbrevations.Long
Avatars.Creator
Avatars.AvatarName
Avatars.FileName
Avatars.Game
Avatars.Section
Avatars.Width
Avatars.Height
FanInfo.Crator
FanInfo.ContactMethod
FanInfo.Address
FanRattings.Cration
FanRattings.Rating
How they relate:
Abbrevations.Short = Avatars.Game
Avatars.Creator = FanInfo.Creator
Avatar.AvatarName = Ratings.Cration
Any help would be really helpful. Thanks
--
If I get used to envying others...
Those things about my self I pride will slowly fade away.
-Stellvia
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Mar 21, 2006
I have two tables I need to join but there are 2 fields which theycould be joined on.Using the example Tablles, TableA and TableB below;TableAID1 ID2 Qty1 Null 42 A 5Null B 6TableBID1 ID2 QtyNull A 63 B 64 Null 7Null C 8I want to create TableC which will look like this;ID1 ID2 TableA.Qty Tableb>Qty1 Null 4 Null2 A 5 63 B 6 64 Null Null 7Null C Null 8Any ideas?Regards,Ciarán
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Mar 18, 2008
Hi all,
I am trying to join 2 tables in my database on an encrypted column. I am using a symmetric encryption, but because of the IV, a string encrypted at 2 different times produces 2 different encrypted strings. Therefore, I can not merely join the 2 tables on the encrypted columns. Has anyone any insight on techniques for solving this problem? The most naïve way, would be to decrypt both tables, join them, and re-encrypt them again. But, the tables are quite large, and this would be very processor (and time) intensive.
Any help would be greatly appreciated. Thanks in advance for any suggestions.
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Feb 28, 2002
I need to write a sql query which is a master-detail query. Here's the example structure of tables:
Master table:
ColID as longint, ColA as int, ColB as int, ColPartID as longint, ColPartName as longint
Child table -- Wheel:
ColID as longint, ColA as int, ColB as int
Child table -- Door:
ColID as longint, ColA as int, ColB as int
Child table -- Window:
ColID as longint, ColA as int, ColB as int
..... etc
From the master table, it needs to join with its child in order to get the detailed information. However, there're more than one child table for it to join. In other words, the query has to choose the correct child table to join for each row selectively. The use of correct child depends on one of the columns in its master table (ColPartName).
My question is: Does it worth of me keep finding a solution for this query or should I abandon this? I really need some advice, please.
Many thanks,
Leonard
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Apr 30, 2007
I find that joining to the same table twice is OK, but as soon as you do it 3 or more times you get a massive performance hit.
Does anyone know the reason for this? Whats special about 3?
What's the best approach to do this sort of thing?
(I've used the SQL Server 2005 Tuning Advisor to add indexes for the query).
Rather than:
Select ..., sum(a1.<column>), sum(a2.<column>), sum(a3.<column>) from master_table
left join table_1 a1 on ...
left join table_1 a2 on ...
left join table_1 a3 on ...
group by ...
I have to select all the table and filter it using case:
Select ...,
sum(case when table_1.<column> = '...') as a1,
sum(case when table_1.<column> = '...') as a2,
sum(case when table_1.<column> = '...') as a3,
from master_table
left join table_1
group by ...
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Feb 23, 2006
Hi All,Bit of a newbie question i'm afraid, so sorry if this is a reallystupid question,I am not sure if I am trying to do this in the right place as I am sureSQL Server has a far better way of doing thisWhat I am trying to do is join the contents of several columns andpresent the entry into a new column. the entries of all the columns Iam trying to join are different types such as dates and numbers. I wantto join all columns as a text string. To make it just a even moretricky I wish to insert a # between all fields.Just in case my poor description has got you thinking What the F*&Khere is an example of what I am trying to doC1 C2 C3 C4 C5Ian 1234 22/02/2006 123456789 Ian#1234#22/02/2006#1234567890I have been trying to do this in the Formula in the design veiw of thetable.Any Advice would be fantastic.Many ThankIan
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Jan 26, 2006
hi there,
i have the following joining table (many-to-many relationship)...
CREATE TABLE [dbo].[products_to_products_swatch] (
[products_to_products_swatch_id] [int] IDENTITY (1, 1) NOT FOR REPLICATION NOT NULL ,
[product_id] [int] NOT NULL ,
[products_swatch_id] [int] NOT NULL
) ON [PRIMARY]
GO
question: do i need to include a primary key in this table - being that it is a joing table?
thanks
mike
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Oct 8, 2007
hi everyone, i've added 2 tables one is on adding, the other one is on returning. but when i return, the dropdownlist keeps displaying those which are returned already. it shouldnt display because i've already returned.
here are the codes that i add,
"INSERT INTO record VALUES( '" + dateOfIncoming + "', '" + manifestNo + "', '" + hoName + "','" + hoRemarks + "', '" + toName + "', '" + toRemarks + "', '" + purpose + "', '" + timeEntered + "', '" + dateEntered + "', 'Out')"
here are the codes that i return
"INSERT INTO returnRecord VALUES( '" + dateOfIncoming + "', '" + manifestNo + "', '" + hoName + "','" + hoRemarks + "', '" + timeEntered + "', 'In')"
here are the codes that i wanna display in the dropdownlist which i have set the status = IN. means they have returned already so it should display. this is wad i tried what its wrong ---->
"select a.manifestNo from record a, returnRecord r where a.status = 'Out' And r.status = 'In'"
my dropdownlist cant retrieve those records that are already returned. i suspect is the select statement that is wrong. but i cant figure out how. please help me!
regards, ethan
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May 13, 2006
Hi there
I am pretty new to SQL and need some help.
I am trying to make a database that is used as a tool in a glazing company.
I don't know if I am doing this the right way or not.
I have broken down the different products into 7 different tables as I believe they should not all be togeather as they all have different information.
The tables
tblBusWindScreen
tblCarWindscreen
tblTruckWindcreen
tblFlatGlass
tblTint
tblMoulds
tblSundries
I also have a table called tblOrders. (This is where all the order information will be kept.)
My question is how do I form a relationship between the 7 tables and tblOrders?
Do I add another table which I join all the PK from each of product tables then create a join between that table and tblOrders?
Any tips would be great as I am only used to creating tables that have 1 maybe 2 different tables joined to them.
Thanks for your help.
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Aug 29, 2001
(SQL 7 on NT Server)
I want to append a table with 1200 rows, using DTS. While I know it is better to do while no one is using the database, exactly what impact will it have if I do this while the database is online? Which leads me to my next question: Exactly what operations can I do while the db is online, and what ones should I not even think of. Most of my needs are data imports and exports. I haven't found much in Online Books about this. Any help would be appreciated very much.
Rob
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Jan 5, 2004
I have two tables in seperate dbs that I need to match up users and update the passwords in the second db table. I know how to match up the data and I'm sure I can do this using a cursor but I was wondering if there is a way I can do this with an update statement. Any suggestions(including telling me I'm stuck using a cursor) would be great.
Thanks ahead of time
EDIT: Nevermind, figured it out :D Thanks anyway.
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Sep 16, 2007
I am trying to do here is to load different flat files to different tables:
For example, if the file name starts with "enrollment", then it goes to table "enrollment" table;
if the file name starts with "student", then it goes to "student" table.
For now, I created a foreach loop container for the each different files. So it ended up using several foreach loop containers. I am wondering if there is a way just to use one foreach loop containters to process the loading.
Anyone shed some light on this?? Thank you very much for your help!
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Jan 4, 2001
Greetings all:
I am looking for a way to get detailed information about each created table (regardless of permanancy) in a stored procedure, similar to the information one received from using sp_help on an individual table.
Does anyone know of such an animal?
Thank you, and Happiest of New Years,
Jack Cole
Magellan Healthcare, Inc.
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Oct 16, 2006
Hi Group,My apologies for the lengthy post, but here goes...I have the following tables:TABLE Vehicles([ID] nvarchar(5),[Make] nvarchar(20),[Model] nvarchar(20),)TABLE [Vehicle Status]([ID] int, /* this is an auto-incrementing field*/[Vehicle ID] nvarchar(5), /* foriegn key, references Vehicles.[ID] */[Status] nvarchar(20),[Status Date] datetime)Here's my problem...I have the following data in my [Vehicles] and [Vehicle Status] tables:[ID] [Make] [Model]----------------------H80 Nissan SkylineH86 Toyota Aristo[ID] [Vehicle ID] [Status] [Status Date]----------------------------------------1 H80 OK 2006-10-012 H80 Damage 2006-10-053 H86 OK 2006-10-134 H86 Dent 2006-10-155 H86 Scratched 2006-10-16I need a query that will join the two tables so that the most recentstatus of each vehicle can be determined. I've gotten as far as:SELECT Vehicle.[ID], Make, Model, [Status], [Status Date] FROM[Vehicles] INNER JOIN [Vehicle Status] ON [Vehicles].[ID] = [VehicleStatus].[Vehicle ID]Of course this produces the following results:[ID] [Make] [Model] [Status] [Status Date]--------------------------------------------H80 Nissan Skyline OK 2006-10-01H80 Nissan Skyline Damage 2006-10-05H86 Toyota Aristo OK 2006-10-13H86 Toyota Aristo Dent 2006-10-15H86 Toyota Aristo Scratched 2006-10-16How do I filter these results so that I get only the MOST RECENT vehiclestatus?i.e:[ID] [Make] [Model] [Status] [Status Date]--------------------------------------------H80 Nissan Skyline Damage 2006-10-05H86 Toyota Aristo Scratched 2006-10-16Thanks in advance,Rommel the iCeMAn*** Sent via Developersdex http://www.developersdex.com ***
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Aug 8, 2007
I've got a lot of XML like this (simplified):
Code Snippet
... 8 MORE
... 9 MORE TIMES
I need to get this into three existing SQL Server 2005 tables, each with identity columns for their primary keys:
Code Snippet
CREATE TABLE ELEMENT1 (
[ID] INT IDENTITY
)
CREATE TABLE ELEMENT2 (
[ID] INT IDENTITY,
[ELEMENT1_ID] INT
)
CREATE TABLE ELEMENT3 (
[ID] INT IDENTITY,
[ELEMENT2_ID] INT
)
With primary and foreign keys as you'd expect, and, of course, many more columns!
How would I get this into tables through SSIS, preferably in a high-performance manner (there may be several gigabytes of XML to load).
The issue, of course, is that in order to insert an ELEMENT2 row, I need the ID from the coresponding ELEMENT1, etc.
Any ideas or pointers to articles would be welcome.
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Jan 25, 2008
hey everyone,I'm having trouble cranking out an appropriate SQL query for what I'm trying to do. I'm trying to add a ratings system into a website, I have 2 relevant tables.Files = table listing all uploaded filesRatings = table listing all ratings for filesThe two DB's are theoretically linked by the fact that the ratings table has a field for "fileID" which matches up to "fileID" in the files table. The way the page works, is that there is a querystring in the URL "filename" where "filename" is a field within the files table. So basically I'm looking for the AVG rating.ratings, where rating.fileID = files.fileID, and the appropriate files.fileID is gained from files.fileID WHERE files.filename = request.querystring["filename"]holy crap, i hope that made sense to someone here. i'm not great at explaining this. My problem is I want the AVG ratings.rating from the table ratings.... where ratings.fileID = files.fildIDWhat I have so far, that works except for the AVG part is below. This code will pull only the ratings for the appropriate file, the problem is whenever I try to add "AVG(something)" to it, the query fails.SELECT files.FID AS Expr1, files.filename, ratings.FID, ratings.ratingFROM files INNER JOIN ratings ON files.FID = ratings.FIDWHERE (files.filename = @filename) @filename value is gained from the URL querystringany ideas?
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Sep 12, 2001
Help -
I need to import data into an existing table. Most import rows were unique, so I had no problem using DTS and appending. However, some import rows match existing rows except for one column/field that contains updated/new data, and I have to either replace the entire row with the imported row, or replace the individual field with the new data. How do I do that when there are many rows to import? It would take forever typing in all the data using UPDATE. Thanks in advance for your help!
rb
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Jun 22, 2007
Hi!
There is a view in our replicated SQL-2000 database, that returns all user tables and views with replication state (0 if not included into publication, 1 if included):
Code Snippet
CREATE VIEW [dbo].[ViewREPL_PublishedObjects]
AS
SELECT TOP 100 PERCENT
CASE [xtype]
WHEN 'U' THEN 'Table'
WHEN 'V' THEN 'View'
ELSE NULL END AS [Object Type],
[name] AS [Object Name],
CASE WHEN [replinfo] = 0
THEN 0 ELSE 1
END AS [Replicated]
FROM [sysobjects]
WHERE
[xtype] in ('U', 'V')
AND [status] > 0
ORDER BY
(CASE [xtype]
WHEN 'U' THEN 1
WHEN 'V' THEN 2
ELSE 10
END),
[name]
Now we need to upgrade our database to SQL-2005, but [sysobjects] table have been changed, so neither Replicated state could be determined according on [replinfo] column value, nor User/System object according on [status].
So, I need a view with same functionality, that will work under SQL-2005 and 2008.
Please, help!
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Jan 24, 2008
I'm new to my company, although not new to SQL 2005 and I found something interesting. I don't have an ERD yet, and so I was asking a co-worker what table some data was in, they told me a table that is NOT in SQL Server 2005's list of tables, views or synonyms.
I thought that was strange, and so I searched over and over again and still I couldn't find it. Then I did a select statement the table that Access thinks exists and SQL Server does not show and to my shock, the select statement pulled in data!
So how did this happen? How can I find the object in SSMS folder listing of tables/views or whatever and what am I overlooking?
Thanks,
Keith
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Dec 7, 2006
We have 20 -30 normalized tables in our dartabase . Also we have 4tables where we store the calculated data fron those normalised tables.The Reason we have these 4 denormalised tables is when we try to dothe calcultion on the fly, our site becomes very slow. So We haveprecalculated and stored it in 4 tables.The Process we use to do the precalcultion, will get do thecalculation and and store it in a temp table. It will compare the thetemp with denormalised tables and insert new rows , delte the old oneans update if any changes.This process take about 20 mins - 60mins. Ittakes long time because in this process we first do the calculationregardless of changes and then do a compare to see what are changed andremove if any rows are deleted, and insert new rowsand update thechanges.Now we like to capture the rows/columns changed in the normalisedtables and do only those chages to the denormalised table , which weare hoping will reduce the processing time by atleast 50%WE have upgraded to SQL SERVER 2005.So We like to use the newtechnology for this process.I have to design the a model to capture the changes and updated onlythose changes.I have the list of normalised tables and te columns which will affectthe end results.I thought of using Triggers or OUTPUT clause to capture the changes.Please help me with the any ideas how to design the new process
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Sep 24, 2006
Im new to stored procedure, but here's what I want, if someone can get me started and provide this as an example it would be VERY welcome!I have the following, a SP with parameter IsMale. This parameter may be empty. If it's not empty I want to add some text to my selection query: AND IsMale=paramvalueHere's the SP so far:ALTER PROCEDURE [dbo].[spFindUsersAdvanced] --declare parameters here@IsMale bitASBEGIN -- SET NOCOUNT ON added to prevent extra result sets from -- interfering with SELECT statements. SET NOCOUNT ON; SELECT DISTINCT BirthDate,IsMale, FROM aspnet_Users INNER JOIN tblUserData ON aspnet_Users.UserId = tblUserData.UserID WHERE tblUserData.Username<>''IF @IsMale THENBEGIN AND IsMale='True'ENDELSEBEGIN AND IsMale='False'ENDEND IFEND1. How do I check if the parameter is empty?2. How do I add the text to my selection query?
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Oct 30, 2007
Hi all,I am trying to write a stored procedure, which has two insert statements.the first insert statement, is simple which inserts data into a table and returns the primary key for the new row added. using this primary key, i am writing another insert statement, which passes a list of elements which would be then entered into another table, with the primary key of the first table.Is this possible to do in a single stored procedure? I have implemented this using two different sp, but am wondering if it can be done other way?thanks for your help!
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Dec 1, 2004
Hi,
For many to many relationship, what is the minimum number of tables required.
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Oct 17, 2005
Hi plz read below is my scenarioI have two diff tables which stores passwords (don't ask why b'coz it was there).Now to make data in both table consistance what I need to do?plz provide optimized solution.Thanks in advance.bye bye.happy coding!!!
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Dec 20, 2000
Experts,
I've few questions regarding SQL Server. Appreciated, If any one out there help me with it.
I would like to do T-SQL Programing and would like to know some good book. I'll mostly be doing Stored procedures,Triggers and views programming. Any advice?
On my sql server I've 10 logins. But, I cannot view these logins from the Enterprise GUI. But, When i run a query against the syslogin table, those all 10 logins shows up. Why is that?
any help would be greatly appreciated.
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Mar 25, 2004
Access 97.................
I'm trying to construct the following SQL statement but am missing something somewhere.
I get a syntax error with the 1st FROM highlighted.
If i construct a query out of the bit that works and then construct a query on that query then i can get it to work no problem but how to mimic that in SQL ? I can't simply view the SQL of the queries because the query names replace the SQL statements.
I'm trying to SUM the 5 volumes that get returned by the TOP 5 SQL statement. The VotingUniverse_TotalVolumeByType query returns the TotalVolume which will enable me to divide the SUMmed 5 volumes by the TotalVolume to obtain a %age.
SELECT
Type,
Sum(Volume) AS Volume,
TotalVolume
FROM
>>>>>>>>>>this following bit works............
(SELECT TOP 5
VotingUniverse_TopFirmsVolumeByType.Type,
VotingUniverse_TopFirmsVolumeByType.Volume
FROM
VotingUniverse_TopFirmsVolumeByType
WHERE
(((VotingUniverse_TopFirmsVolumeByType.Volume)
In (SELECT TOP 5 VotingUniverse_TopFirmsVolumeByType.Volume
FROM
VotingUniverse_TopFirmsVolumeByType
ORDER BY Volume DESC)))
ORDER BY
VotingUniverse_TopFirmsVolumeByType.Volume;)
>>>>>>>>>>>end of bit that works
INNER JOIN
VotingUniverse_TotalVolumeByType
ON
Type = VotingUniverse_TotalVolumeByType.Type
GROUP BY
Type,
TotalVolume;
hope this makes sense to someone anyway
thanks
====
Paul
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Aug 15, 2002
I have a xxx.exe running on SQL 2000 server as a sql job every hour. For some reason this job sometime just hung in the middle and never finish. But
if I stop it and rerun it, it will be down within 10 seconds. I am wondering
if we can set up something so that the job aborts automatically if it ran more than 10 minutes.
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Feb 22, 2001
Hi everyone.
We are running Sql 6.5 sp5 on a Pentium II 350 Mhz with 512 Mb. RAM, 1 ScSi 4 Gb hd, one 8Gb ScSi hd and 2 IDE hd (13,6 Gb and 8Gb) computer running windows NT 4.0 sp 6 without any problems.
Now have bought a new computer. The new one is a Pentium III 733 Mhz 512 Mb Ram with 2 ScSi ultra wide 2 18Gb each and one 40 Gb Ide Hd. We have installed windows NT 4.0 sp 6 and Sql 6.5 sp 5. We have restored our database to make some tests to it. The database is 7 Gb big.
The results of our test are that the old computer is between 20% and 30% faster than the new one when doing sql instructions and using the database even knowing that the hd´s of the new computers are 4 times faster than the old ones.
Would you please give us any help or clue that would make the new computer go faster?
We know that upgrading to sql 7 will work but we need first to make this computer work better with the 6.5.
Thank you.
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Jun 18, 2004
Hello,
When I try to run my asp file it gives me this error. :mad:
Technical Information (for support personnel)
Error Type:
Microsoft OLE DB Provider for SQL Server (0x80040E07)
Syntax error converting datetime from character string.
/conOpen_inc.asp, line 10
Browser Type:
Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.1.4322)
Page:
GET /Default.asp
Anyone can tell me whats happening ? thank you
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Oct 12, 2004
I often use DTS to move databases between the servers. When you choose "Transform" data and “Column Mappings and Transformation” window opens, the default option is “Append rows to destination table”.
Question: Is there a way to change the default option to “Delete rows in destination table”, so I wouldn’t have to go thru the transformation of dozens of tables every time I move databases around.
P.S. I know that I can save DTS package with my settings and use it later. The problem is that every time it might be different database or objects might change. So, it is not a solution for me.
Thanks
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Jul 25, 2007
Dear All,
I have a client requirement. We are integrating two applications. So the problem is that, whenever some updates (meaning to say "create" , "delete" , "update") happens in the SQL DB Tables, i needed to track that data and send it to a different system.
What I have thought abt is that if SQL could generate a file with all the values deleted/updated/created in the DB, then I could take those values and do the needful. Please help me..
Thanks,
Sanjo
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Feb 28, 2004
Hello guys,
I'm new to the forum and to MS SQL 2K.
I'm trying to a merge similar rows in a table into a single row and put them in a new table.
Example:-
This is my input table
TableA
ID A B C
------------------------
1 jk kl bj
2 sd we op
3 io po kl
1 ui gh ew
2 kl re op
1 qw kj nn
My output table should look like this
TableB
ID A1 B1 C1 A2 B2 C2 A3 B3 C3
-----------------------------------------------------
1 jk kl bj ui gh ew qw kj nn
2 sd we op kl re op
3 io po kl
Please help me on how to create my output.
Thanks in advance,
Sid.
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