Retrieving Data From A Junction Table
Jan 30, 2008
Hi i have a junction table(UserGroups) which is linking my users table with my groups table, however when the information is coming back in the format below, instead i want the group names to appear in only one field, instead of repeating the same data, could someone please tell me what i need to change
UserName: Edwin Carols
UserAge: 28
JobTitle: Manager
GroupName: MUFC
UserName: Edwin Carols
UserAge: 28
JobTitle: Manager
GroupName: AFC
Below is my SQL statement;
SELECT Users.UserName,Users.UserAge, Users.JobTitle, Groups.GroupName FROM Users INNER JOIN UserGroups ON Users.UserID = UserGroups.UserID INNER JOIN Groups ON UserGroups.GroupID = Groups.GroupID WHERE (Users.UserID = '5')
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May 1, 2008
Hello specialists.
Maybe this is the wrong formum but I've got a question for which you probably have the answer, i hope.
Situation
------------
John is member of Group_A and Group_B
Bill is member of Group_B and Group_C
Allison is member of Group_A and Group_E
How can I create a query to input Allisons username into table 1 and groupmembership into table 2. Also updating the relationship within junction-table3 must be done automaticaly. I want to avoid duplicate records.
The final situation I want is given in red text.
The relationships between the tables are as follows
-------------------------------------------------------------
Table1 (PK)ID-Userinfo [ONE] <------------> [MANY] Table3 ID-Userinfo
Table3 (PK)ID-GroupInfo [MANY] <------------> [ONE] Table2 (PK)ID-GroupInfo
Table1: UserInfo
------------------------------
(PK)ID-Userinfo UserName
1 John
2 Bill
3 Allison
Table2: GroupInfo
------------------------------
(PK)ID-GroupInfo GroupName
1 Group_A
2 Group_B
3 Group_C
4 Group_E
Table3: MemberOf
------------------------------
(PK)ID-MemberOf ID-UserInfo ID-GroupInfo
1 1 1
2 1 2
3 2 2
4 2 3
5 3 1
6 3 4
I hope you can help me cracking this nut.
Thx in advance. Greetings Fred
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Oct 10, 2007
I have nine type of buttons,
EnrollAmtBTM
PlacAmtBTM and so on, I also have a SQL setver view V_Payment_Amount_List from here i need to display the data on the button
this is the select value to display when i choose the agency list and the amount corresponding to that agency_ID is displayed here the agency_ID is fetched from the SQL CONDITION
THIS IS WHERE I GET FETCH AGENCY DATA WHEN SELECTED i.e SQL CONDITIONprotected void CollectAgencyInformation()
{
WebLibraryClass ConnectionFinanceDB;ConnectionFinanceDB = new WebLibraryClass();
string SQLCONDITION = "";string RUN_SQLCONDITION = "";
SessionValues ValueSelected = null;int CollectionCount = 0;if (Session[Session_UserSPersonalData] == null)
{ValueSelected = new SessionValues();
Session.Add(Session_UserSPersonalData, ValueSelected);
}
else
{
ValueSelected = (SessionValues)(Session[Session_UserSPersonalData]);
}ProcPaymBTM.Visible = false;PaymenLstBTN.Visible = false;
Dataviewlisting.ActiveViewIndex = 0;TreeNode SelectedNode = new TreeNode();
SelectedNode = AgencyTree.SelectedNode;
SelectedAgency = SelectedNode.Value.ToString();
Agencytxt.Text = SelectedAgency;
Agencytxt2.Text = SelectedAgency;
Agencytxt3.Text = SelectedAgency;DbDataReader CollectingDataSelected = null;
try
{CollectingDataSelected = ConnectionFinanceDB.CollectedFinaceData("SELECT DISTINCT AGENCY_ID FROM dbo.AIMS_AGENCY where Program = '" + SelectedAgency + "'");
}
catch
{
}DataTable TableSet = new DataTable();
TableSet.Load(CollectingDataSelected, LoadOption.OverwriteChanges);int IndexingValues = 0;foreach (DataRow DataCollectedRow in TableSet.Rows)
{if (IndexingValues == 0)
{SQLCONDITION = "where (Project_ID = '" + DataCollectedRow["AGENCY_ID"].ToString().Trim() + "'";
}
else
{SQLCONDITION = SQLCONDITION + " OR Project_ID = '" + DataCollectedRow["AGENCY_ID"].ToString().Trim() + "'";
}
IndexingValues += 1;
}SQLCONDITION = SQLCONDITION + ")";
ConnectionFinanceDB.DisconnectToDatabase();if (Dataviewlisting.ActiveViewIndex == 0)
{
Dataviewlisting.ActiveViewIndex += 1;
}
else
{
Dataviewlisting.ActiveViewIndex = 0;
}
SelectedAgency = SQLCONDITION;
ValueSelected.CONDITION = SelectedAgency;
???? this is where i use to get count where in other buttons and are displayed.... but i changed the query to display only the Payment_Amount_Budgeted respective to the agency selected. from the viewRUN_SQLCONDITION = "SELECT Payment_Amount_Budgeted FROM dbo.V_Payment_Amount_List " + SQLCONDITION;
try
{
CollectionCount = ConnectionFinanceDB.CollectedFinaceDataCount(RUN_SQLCONDITION);
EnrollAmtBTM.Text = CollectionCount.ToString();
}
catch
{
}////this is my CollectedFinaceDataCount-- where fuction counts the records in the above select statement if i use for eg.
"SELECT Count(Placement_Retention_ID) FROM dbo.V_Retention_6_Month_Finance_Payment_List"
here is the functionpublic int CollectedFinaceDataCount(String SQLStatement)
{int DataCollection;
DataCollection = 0;
try
{
SQLCommandExe = FinanceConnection.CreateCommand();
SQLCommandExe.CommandType = CommandType.Text;
SQLCommandExe.CommandText = SQLStatement;
ConnectToDatabase();DataCollection = (int) SQLCommandExe.ExecuteScalar();
DisconnectToDatabase();
}catch (Exception ex)
{Console.WriteLine("Exception Occurred :{0},{1}",
ex.Message, ex.StackTrace.ToString());
}
return DataCollection;
}
So here mu requirement request is to display only the value fronm the view i have against the agency selected
Please help ASAP
Thanks
Santosh
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Feb 17, 2006
I have two tables. A table called users (content speaks by it self) and a table called groups.
Since i want every user to be able to be a member of several groups and, of course, a group to have several users i have made a junction table called jt.
The junction table contains userId's and groupId's according to the user-group bindings. The primary key(identity) in the junction table is a int named jtId.
Now i want to take out all posts from the junctiontable and the corrresponding userName (s) from the users-table and the corresponding groupName from the groups-table.
Can somebody please help me to make a SQL command that will di that for me. I have tried with INNER JOIN and several SELECTS in the same command.
Thanks in advance, Greetings from Esben
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May 9, 2007
I am trying to update 2 tables at the same time by adding new records to them and then making sure that they are related on my junction table?
Table1
packageID
Packagename
Table2 (JunctionTable)
PackageID
JobID
Table3
JobID
JobName
And I want to create a new package and new Job Name at the same time I would need to make multiple insert statements
First take care of the new Package
INSERT INTO Table1 (PackageName) Value (@PackageName)
Then Take Care of the JobName
INSERT INTO Table3 (JobName) Value (@JobName)
Finally marry the two together
but how?
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Sep 23, 2007
Looking for some help here, so thanks for any input. I'm a painfully new newbie to SQL scripting.Situation:
I have a simple database to handle an organization's events. Those
events are categorized and may have more than one category assigned to
each event. I need a maintenance Web Form to update their events.Set
Up (so far): I have a CATEGORIES table. It has an auto incrementing UID
and a Category name field. This table will be updated so infrequently,
I plan to update it manually (no need for a maintenance Web Form). Next
is the EVENTS table. It also has an auto incrementing UID along with
several fields (Title, Location, DateTime, etc.). The junction table is
named jEVENTSCATEGORIES. It has its own auto incrementing UID along
with 2 fields named for the primary keys (UIDs) in the other 2 tables
(EventsID and CategoryID).Goal: On the Web Form, I have a
CheckBoxList control that's populated by the CATEGORIES table. One or
more categories can be checked for each event. I have a FormView
control that allows Edits and Inserts.Need: I need to know the
INSERT statement(s) required to insert a new record in the EVENTS table
and then to update one or more rows in the junction table
(jEVENTSCATEGORIES).My Assumptions: I know how to create
SELECTs and INSERTs and whatnot, but I'm not certain how to create a
second INSERT statement that is based on a variable (or output) from a
previous action. So any help would be MUCH appreciated. Thanks for your
time!
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May 5, 2014
Why do we need a junction table in a many to many relationship? Why can't everything be in just 2 tables?
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Jul 20, 2005
As an example, I am building an authentication mechanisim that will usedata in the 3 left tables to determine rights to objects in adestination table, diagrammed below. In this structure, multiplerecords in the left tables will point to multiple records in the righttable. Normally, I would approach this problem using junction tables(LeftID, RightID) to create many-to-many joins.However, given the structure of each table is nearly identical (as faras the linking IDs are concerned), I could also use a single junctiontable with columns for each available table ID (LeftID1, LeftID2,LeftID3, RightID). In this table, only two IDs would be utilized perrow (LeftIDx -> RightID).In both designs, the needed rights information is returned from fairlysimple views, thus the end result is equivalent. The advantage to thesecond, multi-ID junction table design, is a simpler databasestructure. However, never using this approach before, I am unsure ofthe potential future performance impacts.Any significant downsides to this second design? Examples of anabbreviated structure follow:Data Tables-----------LeftTable1LeftID1 (int)Data1LeftTable2LeftID2 (int)Data2LeftTable3LeftID3 (int)Data3DestinationTableRightID (int)DataLinking tables option 1-----------------------JunctionTable1LeftID1RightIDJunctionTable2LeftID3RightIDJunctionTable3LeftID3RightIDLinking table option 2----------------------JunctionID1 (int)ID2 (int)ID3 (int)DestinationID (int)
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Feb 5, 2008
this is a simple problem but it's just driving me mad as it's not reading from my dB. basically, I've have reviews stored in my dB and want to display them in a textbox by clicking on a button called btnReviews. I think the problem might be that there is too much text stored per row of the table (as it is a review), but I have the datatype set as text in sql. here's the simple un-errorred code I have behind the button. any ideas where I went wrong. i've a feeling it's something small but it's just taken too long to figure out.protected void btnReviews_Click(object sender, EventArgs e) { String strConn = ConfigurationManager.ConnectionStrings["conLocalDatabase"].ConnectionString; SqlConnection dbConnection = new SqlConnection(strConn); SqlCommand dbCommand = new SqlCommand("Select [ReviewC] From [Review])", dbConnection); dbCommand.Parameters.AddWithValue("Review", txtReviewView.Text); try { dbConnection.Open(); dbCommand.ExecuteNonQuery(); } catch (SqlException ex) { Console.WriteLine(ex.ToString()); } finally { if (dbConnection != null) { dbConnection.Close(); } } }
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Apr 28, 2008
Hi
I ve a datagrid . And Two Database table in sqlServer2005. The name of the tables are 'Property' and 'userid'.
My datagrid wants to retrive all records from Property table and one record from userid table. The Property table contains Propertycode, lastdate , departmentname.
The userid table contains so many record along with 'id' record which my datagrid wants to retrieve.
pl tel me how 2 write code for that?
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Feb 28, 2008
Hi i have a junction table(UserGroups) which is linking my "users" table with my "groups" table, however when the information is coming back in the format below, instead i want the group names to appear in only one field, instead of repeating the same data, could someone please tell me what i need to change.
UserName: Edwin CarolsUserAge: 28JobTitle: ManagerGroupName: MUFC
UserName: Edwin CarolsUserAge: 28JobTitle: ManagerGroupName: AFC
Below is my SQL statement;
SELECT Users.UserName,Users.UserAge, Users.JobTitle, Groups.GroupName FROM Users INNER JOIN UserGroups ON Users.UserID = UserGroups.UserID INNER JOIN Groups ON UserGroups.GroupID = Groups.GroupID WHERE (Users.UserID = '5')
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Mar 1, 2008
Hi i have a junction table(UserGroups) which is linking my "users" table with my "groups" table, however when the information is coming back in the format below, instead i want the group names to appear in only one field, instead of repeating the same data, could someone please tell me what i need to change.
UserName: Edwin Carols
UserAge: 28
JobTitle: Manager
GroupName: MUFC
UserName: Edwin Carols
UserAge: 28
JobTitle: Manager
GroupName: AFC
Below is my SQL statement;
Code:
SELECT Users.UserName,Users.UserAge, Users.JobTitle, Groups.GroupName FROM Users INNER JOIN UserGroups ON Users.UserID = UserGroups.UserID INNER JOIN Groups ON UserGroups.GroupID = Groups.GroupID WHERE (Users.UserID = '5')
And my table structure is like;
Users; UserID, UserName, UserAge
Groups; GroupID, GroupName
UserGroups; UserGroupID, UserID, GroupID
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Nov 30, 2005
Hi all,
This is a bit of a general question regarding SQL Server link tables that i hope someone can find the time to answer.
I am looking for the best practice. If I have 3 tables
1) tblCompetition
2) tblTeams
3) tblTeamsInCompetition (this is the link table)
I know the link table should have a related CompetitionID and TeamID,
but should the link table also have a primary key that is an identity
autoincrement by 1 just as you would with the other two tables. In
Access I have never done this, however in SQL Server I have read that
you should do this (but now I can't find the documentation again which
prompts me to ask the question here).
Thanks for taking the time to answer this question.
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Sep 3, 2006
I would like to retrieve a hierarchical list of Product Categories from a single table where the primary key is a ProductCategoryId (int) and there is an index on a ParentProductCategoryId (int) field. In other words, I have a self-referencing table. Categories at the top level of the hierarchy have a ParentProductCategoryId of zero (0). I would like to display the list in a TreeView or similar hierarchical data display control.Is there a way to retrieve the rows in hierarchical order, sorted by CategoryName within level? I would like to do so from a stored procedure. Example data:ProductCategoryID CategoryDescription ParentProductcategoryID ParentCategoryDescription Level------------------------------------------------------------------------------------------------------------------------------------------------1 Custom Furniture 0 02 Boxes 0 03 Toys 0 04 Bedroom 1 Custom Furniture 15 Dining 1 Custom Furniture 16 Accessories 1 Custom Furniture 17 Picture Frames 6 Accessories 28 Serving Trays 6 Accessories 29 Entertainment 1 Custom Furniture 110 Planes 3 Toys 111 Trains 3 Toys 112 Boats 3 Toys 113 Automobiles 3 Toys 114 Jewelry 2 Boxes 115 Keepsake 2 Boxes 116 Specialty 2 Boxes 1Desired output:Custom Furniture Accessories Picture Frames Serving Trays Bedroom Dining EntertainmentBoxes Jewelry Keepsake SpecialtyToys Automobiles Boats Planes Trains
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Oct 10, 2007
Hello,
This seems like such a simple problem but I am new developer even through I have been on the administration end of things for some time. I will go into more detail about my tables and there relationships below. Anyway, I am trying to create a many-to-many relationship within ms sql server 2005. I have created both of my primary tables and also a junction table per the directions on microsoft's website all per ms's instructions as stated here...
http://msdn2.microsoft.com/en-us/library/ms178043.aspx
At then end of these instruction it states as a NOTE: The creation of a junction table in a database diagram does not insert data from the related tables into the junction table. For information about inserting data into a table, see How to: Create Insert Results Queries (Visual Database Tools).
http://msdn2.microsoft.com/en-us/library/ms189098.aspx
and these directions do not go into detail on how to do an insert on a junction table. And I cant find out how to do this anywhere on the internet... I did create a T-SQL INSERT statement in a trigger as listed below but I end up getting an error AS LISTED BELOW....
Here is how I set everything up...
PetitionSet table consists of:
PetitionSetID int auto-increment primary key
PetitionSetName varchar(50) no nulls
PetitionSetScope varchar(50) no nulls
the Petition table consists of:
PetitionID int auto-increment primary key
PetitionSetID int no nulls
PetitionName varchar(50) no nulls
the SetToPetitionJunction table consists of:
PetitionSetID int
PetitionID int
And, there is a composite key made up of both the PetitionSetID and PetitionID fields.
I have created the foreign key relationships with DEFAULT VALUES from the SetToPetitionJunction table to each column's respective corresponding column in each of the tables: PetitionSet and Petition.
The trigger is on the Petition table and it has the following code:
set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
go
-- =============================================
-- Author: Name
-- Create date:
-- Description:
-- =============================================
ALTER TRIGGER .[SetToPetitionJunctionTrigger]
ON .[dbo].[Petition]
AFTER INSERT
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
INSERT INTO SetToPetitionJunction
(PetitionID, PetitionSetID)
SELECT Petition.PetitionID, PetitionSet.PetitionSetID
FROM Petition INNER JOIN
PetitionSet ON Petition.PetitionSetID = PetitionSet.PetitionSetID
END
I have created an asp.net 2.0 front end to insert values into the PetitionSet table and the Petition Table. And in the detailsview for the Petition table I manually insert the PetitionSetID field to the number that corresponds to an auto-generated number on the primary key of the PetitionSet table. So I am maintaining referential integrity...
The first time it works and inserts one record in the Junction table containing the PetitionSetID from the PetitionSet table and the PetitionID from the petition table.
Then when I try to add in another petition for the same petition set number just like I did the first time and then I get this error...
Violation of PRIMARY KEY constraint 'PK_SetToPetitionJunction'. Cannot insert duplicate key in object 'dbo.SetToPetitionJunction'.
The statement has been terminated.
David
All Rights Reserved in All Media
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Mar 11, 2014
I have 'codes' and 'Description' field in 'ecode' table and 'codes' in quote table values for 'Codes' in quote table is like
Quoteid Codes
0012 LB,WS
0031WDC
In 'ecode' table 'description' column contain the description for each code
for eg :
Ecode Table : -
Codes Description
Lb - Late Booking
WS - Winter Sports
WDC - Wedding Cover
How to select 'description' when retrieving data from quote table
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Jul 8, 2015
I am in problem that I have delete data in my production table.
Now how to retrieve it?
I have only Yesterdays Full and Transaction Backup files.
I used the following query for deleting all data.
delete from t1;
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Oct 26, 2006
Can Somebody please show me how to acheive this, using the order details in Northwinddatabase or any other good example. as much details as possible. Many Thanks!
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Jul 25, 2007
Can anyone help me on this...
when i select data from table using select statement it takes huge amount of time....The table contains 7 million entries and when i select by mentioning a criteria it takes around 45 secs..The system has 4GB RAM and Dual Processing CPU. The select statement does not contain any grouping and all..
Will it take this much time to retrieve data.?.
The table does include an indexed field,
So can anyone help me on the different things i can do to make the retrieval faster?
Andy
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Jan 5, 2006
Hi,
I have a giant SQL query that retrieves a bunch of information from a couple of tables for use on a page, and I would like some help on constructing the SQL to get exactly what I have in mind. I have a table - called scContacts - that contains a list of contacts with detailed information. The contacts in the table are regular sales contacts, sales reps, and sales managers. Another table - called scCompany - contains a list of companies with detailed information.
For each company, we have a certain sales manager (or user) pertaining to that company as well as potentially a certain rep. The problem is that the contact tied to the company, the sales manager tied to the company, and the rep tied to the company all come from the same table. Here is the base SQL code I've used to get everything but the sales rep's name and sales manager's name:
----- SQL CODE -----
SELECT DISTINCT
scContacts.ID,
scContacts.inheritCoAddr,
scContacts.fName,
scContacts.lName,
scContacts.contact,
scContacts.billToAddress1,
scContacts.billToAddress2,
scContacts.billToState,
scContacts.billToZip,
scContacts.billToCity,
scContacts.billToCounty,
scContacts.billToCountry,
scCompany.ID AS companyID,
scCompany.companyName,
scCompany.companyURL,
scCompany.billToAddress1 AS companyAddress1,
scCompany.billToAddress2 AS companyAddress2,
scCompany.billToCity AS companyCity,
scCompany.billToState AS companyState,
scCompany.billToZip AS companyZip,
scCompany.billToCounty AS companyCounty,
scCompany.billToCountry AS companyCountry,
scCompany.businessType,
scCompany.phoneExt,
scCompany.phoneNum,
scCompany.faxNum,
scCompany.minEmployees,
scCompany.maxEmployees,
scCompany.actionTypeMAX,
scCompany.actionDateMAX,
scCompany.actionTimeMAX,
scCompany.statusID,
scCompany.userID,
scCompany.repID
FROM
scCompany,
scContacts
INNER JOIN
scStatus ON
scStatus.ID = scCompany.statusID
WHERE
scgroupContacts.contactID = [insert cookie value]
AND
scgroups.ID = [insert cookie value]
AND
scCompany.ID = scContacts.companyID
AND
scCompany.groupID = scgroups.ID
----- END SQL CODE -----
As indicated right now, this SQL code will retrieve all of the contact and company information for a certain contact ID which comes from a cookie value (inserted in ASP). I want to get the [fName] and [lName] fields from scContacts table where the scContacts.ID = scCompany.userID, and I also want those same fields from scContacts table again where the scContacts.ID = scCompany.repID. It would be simplest and most efficient if I could do this all at once (and I'm sure it's possible). How would I change the SQL to bring in that information from the same table two more times, tying their ID's to ID's in the company table?
thanks,
mellamokb
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Jun 5, 2006
bobby writes "I have a Table from which i get the ID of customers(Customers are people who have written an online exam).The date of completion of the exams are stored in the corresponding table with the name of the exam.There are more than one exams and the names of the exams are stored in an other table.Now my question is how to get the date of cpletion with the given Id from the first table?"
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Jun 15, 2004
Hi
I've got a module that contains the following function.
Imports System.Data.SqlClient
Module SQL_Sprocs
Function ListUsers()
Dim conn As New SqlConnection(System.Configuration.ConfigurationSettings.AppSettings("DBConn"))
Dim cmd As SqlCommand = New SqlCommand("list_users", conn)
cmd.CommandType = CommandType.StoredProcedure
conn.Open()
Dim dr As SqlDataReader
dr = cmd.ExecuteReader
ListUsers = dr
dr.Close()
conn.Close()
End Function
End Module
I then want to call this function from my webform. So I'm using the following
Dim dr As SqlClient.SqlDataReader
dr = Timetracker.SQLProcs.ListUsers()
Do While dr.Read
Label1.Text &= dr("first_name") & " " & dr("last_name") & ", "
Loop
dr.Close()
But it's not working. I want to have a module that contains all my sprocs and be able to call them from the individual webpages.
What am I doing wrong?
Lbob
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Dec 21, 2006
Faculty member writes:
"I meant to delete just one assignment, doing which was giving me difficulty.
I deleted a whole category by accident which had most of my daily grades in it for a course with quite a few of them. I was negligent in backing them up, so I cannot restore them. I have an XLS file from the midterm, but am missing about 6 grades after that.
Is there any way to recover the grades I had in the deleted category. It has been a couple of days since I entered any new grades. HELP!"
My current backup strategy is to do a full backup 5 pm, differentials every 2 hours, logs every 30 min, all so they arenot simultaneous. Backing these all to same backup device via three different jobs.
Then the server is backed up to tape shortly after the 5 pm full backup.
Obviously, I can't restore from the backup for this situation because it would hurt other data.
But - is there a way I can take last night's backup from tape and restore it to a different database than our production database? (Such a database doesn't at this time exist. Would I detach, copy over the files, and then reattach on prod and attach on the devl side, and then restore from the backup device to the devl copy?)
I've never had to perform this kind of rescue and am wondering if my backup strategy is flawed since it isn't immediately evident how I can easily do this.
I needed a similar thing from our Oracle DBA yesterday, and he went to tape, copied out a table and put it on the Oracle database under a different owner, and I easily fixed the few records that I had botched.
That's exactly what I need to do now with MS SQL 2000.
As the faculty dude said, "HELP!"
And Thanks.
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Oct 26, 2005
Hi,
I was hoping someone would be able to help me, I trying to go through several databases, 111 to be exact, and get the data out of a particular table which is present in all the databases on the same server.
I know how to get the names of the databases from the INFORMATION_SCHEMA, but how can use the name for it to cycle through all the databases and get data out of the one particular table.
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Apr 23, 2007
Hi, I need some help. I have this query where i need to pull up students that have more than or equal to 3 absences in a row. Now I am getting all those students that are absent but not in a row. But i was wondering if there is a way to tell if a student was absent three days in a row . There is a date field that is being used to identify the day of the class and a status field that identifies if the student was absent or present. Please help someone.
Birju
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Jun 26, 2006
Dear fellows,
Up to the moment I've got enough knowledge for read data stored into .LDF files by dbcc log and so on. It's very useful and interesting. Now, I wonder how to retrieve the same information but on MDF files.
At first, I want to make sure that is not possible by mean of traditional methods (dbcc or something like that) I suppose so but I'd like to hear opinions regarding that.
Thanks in advance for any idea, though or further information.
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Mar 7, 2006
The query below should be inserting unique records in the PropertyItem table which only has propertyitem, propertyid, and itemid columns, all of which are PK's in other tables. I'm not doing the insert correctly b/c it's inserting 72 records instead of 24. I really just want to automatically insert the values once I've inserted in the other tables but I'm not sure how. Maybe On Update Cascade?
--PROPERTYITEM
INSERT INTO [USCONDEX_Production].[dbo].[propertyItem]( [propertyId], [ItemId])
SELECT Property.propertyId, ITEM.ItemID
FROM ITEM RIGHT OUTER JOIN
miamiherald ON ITEM.StartDate = miamiherald.FirstInsertDate AND ITEM.Price = miamiherald.PropertyPrice AND ITEM.Classified = convert(int,miamiherald.AdNumber) LEFT OUTER JOIN
Property ON property.adprintid = miamiherald.adprintid
WHERE validAD=1
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Jan 18, 2008
I'm designing a database with 3 tables called Function, Test andScene.A Function has multiple Tests, but a Test has only one Function. Amany to many relationship exists between Test and Scene therefore Ineed a junction table between these two tables - giving 4 tables intotal. The Test table would store a foreign key, the primary key ofthe Function table.There is a problem with design though and that is that Functions andScenes are actually defined before the Test is defined. Therefore itshould be possible to create a Function and add to id its Scenes,before Tests have been defined. In other words, Scenes are as much apart of a Function as they are of Tests. Tests are in fact only ofrelavence to testers. Anyway, to satisfy this scenario, a Junction boxis also needed beween Function and Scene. This creates a loop betweenall tables.Is this a good approach? Any other suggestions or advice on thematter? Any advice regarding data integrity?Thanks,Barry
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Jul 18, 2005
I have four tables that need to be loaded into an ASP.NET application. They need to be loaded together into one result set and sorted. Is it possible to load four tables together and sort them using an SQL statement?
To clarify, say I have the following data:
Table1: Anglesey, Cardiff, Ceredigion
Table2: London, Dorset, Lancashire
Table3: Antrim, Armagh
Table4: Glasgow, Berwick, Edinburgh
I'd want the data retrieved from all four tables and sorted so that the data retrieved would be:
Anglesey, Antrim, Armagh, Berwick, Cardiff, Ceredigion, Dorset, Edinburgh, Glasgow, Lancashire, London
I am aware of and am using the SELECT ... ORDER BY feature of MSSQL in my present ASP.NET application to retrieve from single database tables. I'm using merged datasets and a sort method to solve the above problem at the moment.
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May 16, 2012
I'm preparing a report that will display provider number, provider name, and a single field that will show all the counties that specific provider serves. I realize from researching the coalesce posts that this can be done. However, when I try to retrieve data in the same select statement as my coalesce, I get the error: "A SELECT statement that assigns a value to a variable must not be combined with data-retrieval operations."The listing of the counties must be specific to the provider, so my original code was:
DECLARE @Counties varchar(1000)
SET @Counties = ''
SELECT a.PROV_ID, a.PROV_NAME,
@Counties=coalesce(@Counties,'') + b.COUNTY + ','
from ECBH.dbo.tbl_PROVIDERS a inner join ECBH.dbo.tbl_Provider_Serv_Regions c
on a.PROV_ID = c.PROV_ID
inner join ECBH.dbo.tbl_Regions b
on b.REGION_ID = c.REGION_ID
where c.PROV_ID = a.PROV_ID
and a.MASTER = 1
I thought about creating a table to hold the coalesced values (need to coalesce two other fields as well), but wouldn't an insert to a table fail for the same reason?The counties table does not relate to the provider table, but does relate to a provider_county table (which in turn relates to the provider table).
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Mar 4, 2008
Hello,
Thank you for reading this. I am faced with a problem where there is no storage of deleted or updated information in an OLTP DB. I am mostly concerned about retrieving the deleted data from a table when an update occurs so as to make the deleted data show as an error. Is there a way to retrieve these kind of data from a DB, if so how? Can these data be retrieved by dates? Also how much time do you have before the data can no longer be retrieved? Assuming that the data can be retrieved.
I know the good stuff about datawarehousing but unfortunately we have no DW. Any help will be greatly appreciated.
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Mar 27, 2008
I want to extract a particular portion of primary key field data.For example- suppose there are fifty data in PK field starting from 1...50.Now I want only to extract data from 25 to 50.It is bcos I want to retrieve only the new data that is inserted after a specified time.For example-today there is data starting from 1 to 25 which I have retrieved and saved elsewhere.By tomorrow there will be new data starting from 26 to 50 or more.Now I just want to extract this additional data from the database so that I dont need to extract all data again.Could anybody pls tell me how to do this.How can I do it using common SQL bcos I have to make a program for it.
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Mar 27, 2008
I want to extract a particular portion of primary key field data.For example- suppose there are fifty data in PK field starting from 1...50.Now I want only to extract data from 25 to 50.It is bcos I want to retrieve only the new data that is inserted after a specified time.For example-today there is data starting from 1 to 25 which I have retrieved and saved elsewhere.By tomorrow there will be new data starting from 26 to 50 or more.Now I just want to extract this additional data from the database so that I dont need to extract all data again.Could anybody pls tell me how to do this.How can I do it using common SQL bcos I have to make a program for it.
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