I have a table [Vendor] in first database SAMPLEDB. And i have another table [Contract] in another database TESTDB. I need a foreign key in the [Contract] table (which is in TESTDB database) is reference to the other table [Vendor] which is present in the SAMPLEDB.
When i try to creating them through SQL, i received the following error message :
Msg 1763, Level 16, State 0, Line 1
Cross-database foreign key references are not supported. Foreign key 'SAMPLEDB..VENDOR'.
Is that possible to refer foreign key in external database or not?
If possible, please give solution for this. If not possible, please suggest some alternate way.
Hi, I want know how can I to build a query to get all the foreignkey contrains exist between tables using the sys tables, for example if the user select this two tables:
dbo.cat_states -> with this fields -> id_state & desc dbo.cat_universities -> with this fields -> id_state, id_university & desc_university
I have written the Query in which i am getting TableName,Columns,Precision but how can i get Table related Foreign key and Constraints
SELECT DISTINCT QUOTENAME(SCHEMA_NAME(tb.[schema_id])) AS 'Schema', QUOTENAME(OBJECT_NAME(tb.[OBJECT_ID])) AS 'Table', C.NAME AS 'Column', T.NAME AS 'DataType', C.max_length, C.is_nullable, c.precision, c.scale
I have a "master" table that holds the names of data tables (one record in the "master" table for each "data" table).
Can I create a ForeignKey constraint that will prevent the "master" table records from being removed if the cooresponding "data" table exists? Is the way to do this to use INFORMATION_SCHEMA.TABLES as the PrimaryKeyTable for the ForeignKey?
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
END
GO
IF NOT EXISTS (SELECT * FROM sys.foreign_keys WHERE object_id = OBJECT_ID(N'[dbo].[FK_ParkingFacility__To__Car_Lookup_Car]') AND parent_object_id = OBJECT_ID(N'[dbo].[ParkingFacility__To__Car_Lookup]'))
ALTER TABLE [dbo].[ParkingFacility__To__Car_Lookup] WITH CHECK ADD CONSTRAINT [FK_ParkingFacility__To__Car_Lookup_Car] FOREIGN KEY([CarId])
REFERENCES [dbo].[Car] ([Id])
GO
ALTER TABLE [dbo].[ParkingFacility__To__Car_Lookup] CHECK CONSTRAINT [FK_ParkingFacility__To__Car_Lookup_Car]
GO
IF NOT EXISTS (SELECT * FROM sys.foreign_keys WHERE object_id = OBJECT_ID(N'[dbo].[FK_ParkingFacility__To__Car_Lookup_ParkingFacility]') AND parent_object_id = OBJECT_ID(N'[dbo].[ParkingFacility__To__Car_Lookup]'))
ALTER TABLE [dbo].[ParkingFacility__To__Car_Lookup] WITH CHECK ADD CONSTRAINT [FK_ParkingFacility__To__Car_Lookup_ParkingFacility] FOREIGN KEY([ParkingFacilityId])
REFERENCES [dbo].[ParkingFacility] ([Id])
GO
ALTER TABLE [dbo].[ParkingFacility__To__Car_Lookup] CHECK CONSTRAINT [FK_ParkingFacility__To__Car_Lookup_ParkingFacility]
GO
IF NOT EXISTS (SELECT * FROM sys.foreign_keys WHERE object_id = OBJECT_ID(N'[dbo].[FK_ParkingLot_ParkingFacility]') AND parent_object_id = OBJECT_ID(N'[dbo].[ParkingLot]'))
ALTER TABLE [dbo].[ParkingLot] WITH CHECK ADD CONSTRAINT [FK_ParkingLot_ParkingFacility] FOREIGN KEY([Id])
REFERENCES [dbo].[ParkingFacility] ([Id])
GO
ALTER TABLE [dbo].[ParkingLot] CHECK CONSTRAINT [FK_ParkingLot_ParkingFacility]
GO
IF NOT EXISTS (SELECT * FROM sys.foreign_keys WHERE object_id = OBJECT_ID(N'[dbo].[FK_ParkingGarage_ParkingFacility]') AND parent_object_id = OBJECT_ID(N'[dbo].[ParkingGarage]'))
ALTER TABLE [dbo].[ParkingGarage] WITH CHECK ADD CONSTRAINT [FK_ParkingGarage_ParkingFacility] FOREIGN KEY([Id])
REFERENCES [dbo].[ParkingFacility] ([Id])
GO
ALTER TABLE [dbo].[ParkingGarage] CHECK CONSTRAINT [FK_ParkingGarage_ParkingFacility]
Hi, We have a DB with a heirarchy of tables each connected via Guids and controlled for Delete Operations by Foreign Key Constraints. However, under certain privileged conditions we would like CERTAIN users to be able to perform a Cascade Delete all the way down. Thus by example we have tables A,B,C,D - Typically once a record is inserted into Table A then we can add multiple records in Table B referencing that new record in Table A...and so on through records in Table C referencing Table B...records in Table D referencing table C. Now when we try and delete that ONE Record in Table A we 'could' implement CASCADE DELETES which would delete all those records in Table B,C,D. We decided that was too dangerous to implement as Whooosh....all records could be deleted by a non-privileged user deleteing that ONE records in Table A, so we changed the Cascade DELETE to NO ACTION. However, there are times (hah...particularly in Testing !) when we would like a privilegd user to be able to DO that task...i.e. perform a CASCADE delete. Has anybody got any suggestions on how this would be best, easily and securely implemented. I have had a brief look at INSTEAD OF Triggers but am not sure about the pitfalls of using this... ANy help appreciated, Cheers, Desmond.
I am construvcting a number of databases, some of which containsensitive data and most of which do not. I am attempting to handle thesecurity issues involved in protecting sensitive data in part byputting it in its own database. If the sensitive data is in a databasecalled d_SensitiveData, and in that database there is a table called't_A' (I know, not very informative, but this is only a triviallysimple example :-), and I have a script running in a database'NotSensitiveData' (i.e. there is a statement at the beginning of thescript "USE NotSensitiveData"), how do I referenece the primary key intable 'A'?I tried a variety of things like:ALTER TABLE t_nsXADD CONSTRAINT FK_PersonID FOREIGN KEY (p_idPerson)REFERENCES SensitiveData.t_A (p_idPerson);The above is, in fact, my latest attempt. Everything I tried hasfailed precisely at the point where I specify a table in a differentdatabase. So what is the trick to refering to a table in one databasewhen using another database?This will be used in a ASP.NET v3 application where one of the things Iwant to do is have the authentication provider be a different databasefrom the one used for the main application data.Does anyone know of an example I can download from the web that doesthe same sort of thing I want to try, with some discussion of securityissues involved (i.e. what I can do to harden the application and dataserver)?NB: I am an application developer, not a DBA nor a systemadministrator.ThanksTed
I am using vs 2010 to write my dtsx import scripts.I use a script component as a source to create a flat file destination file.Everything have been working fine,but then my development machine crashed and we have to install everything again.Now when i use the execute package utility to test my scripts i get the following error:
Error system.NullReferenceException: Object refrence not set to an instance reference.
In PreExecute section TextReader = new system.io.streamreader(" file name") In the CreateNewOutputRows: dim nextLine as string nextLine = textReader.ReadLine
[code]...
is there something which i did not install or what can be the error?
I need to refer to a second database from within the database that I login to. Can any one help me with how to abstract this reference? I would like to be able to change a parameter somewhere (i don't really care where) and have it effect any Stored Porcedure which references the second database.
I have 2 databases in sql server. let us say database1 = db1 and database2 = db2 Now both the databases have a same table called table1 with the same fields.
IF data in db1.table1 is updated then data in db2.table2 should be updated automatically.
There are many ways we can do this. one way is to create a INSERT trigger on db1.table1.
But i would like to avoid trigger Is there something in SQL server where I can just link table1 of db1 to db2 and delete the table1 in db2. That means db2 is using the same table that of db1.
I am making a project where I have to add city, agentname, rankofagent, referenceagent name the problem is that who can I make a table where suppose I add member a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p like that
b is joined by a c is joined by b d by c, e by d and so on,
What I want here is that how can I get the result suppose i want to see that chain of p. I want result to be printed as a,b,c,d,e,f,g,h,i,j,k,l,m,n,o either result should be in horizontal form or vertical. with or without comma. I am doing this in SQL....
Hi all,I have two databases DB_External and DB_Internal.I am writing some stored procedures (in DB_Internal) that reads fromthe tables in DB_External. I execute my stored procedures fromDB_Internal.Everytime I want to read the tables in DB_External, I have to refer tothe table as DB_External.dbo.tableName.Is there a better way of declaring the database DB_External up frontin the stored procedure so I don't have to pre-fix "DB_External.dbo."in all the table names?Thanks in advance,June Moore.
Hi There Let me start by explaining what I am trying to achieve as there may be a better way to perform this. I have two databases and I want to refer to four tables - one in one database and three in the other in a sql select statement. When I use the query builder in VWD I can only see tables for the database that is defined in the connection string - so therefore how do I add tables from another database? After reading a few posts I realized that all I have to do is use the syntax: database.owner.table (or [database].[owner].[table]). Unfortunately this didn't work and came up with the error "Invalid Object Name". Assuming that I must have got the owner incorrect I used the Query Tool in SQL Server Express Edition and it worked perfectly! So my sql must be correct, but why will it not work inside VWD? The two databases are named assessment and aspnetdb - the assessment database contains the table reviews and the aspnetdb database contains the tables TutorDetails, EmployerDetails and StudentDetails. Here is the connection string and sql: Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|Assessment.mdf;Integrated Security=True;User Instance=True SELECT Reviews.Programme, aspnetdb.dbo.TutorDetails.Tutor_DisplayName AS [Tutor Name], aspnetdb.dbo.EmployerDetails.DisplayName AS [Employer Name], aspnetdb.dbo.StudentDetails.Student_DisplayName AS [Student Name] FROM Reviews INNER JOIN aspnetdb.dbo.StudentDetails ON Reviews.StudentID = aspnetdb.dbo.StudentDetails.Username INNER JOIN aspnetdb.dbo.EmployerDetails ON Reviews.EmployerID = aspnetdb.dbo.EmployerDetails.UserName INNER JOIN aspnetdb.dbo.TutorDetails ON Reviews.TutorID = aspnetdb.dbo.TutorDetails.UserName WHERE (Reviews.ReviewID = 15) Disregard the value of '15' in the WHERE statement as this was just put in to ensure I got some valid data back, this will be replaced with a variable eventually. I know the sql statement works properly, I think the problem may be something to do with either the connection string - any ideas would be much appreciated. Regards Stuart
I am trying to write a query that will use tables in more than one SQL database (on the same server). How do refer to the table? I have tried dbasename.tablename.fieldname but I don't think that's working.
I'm trying to update a table in MyDB1 with a value in MyDB2 on the same SQL server (2000)
UPDATE MyDB1.dbo.Users SET MyDB1.dbo.Users.InstantASP_UserID = MyDB2.dbo.InstantASP_Users.UserID FROM MyDB2 INNER JOIN dbo.aspnet_Membership a ON a.UserId = MyDB1.dbo.Users.UserID WHERE MyDB2.dbo.InstantASP_Users.EmailAddress = a.Email
I don't want to have to create a linked server. It's on the same box.
I've got code that on my own machine (visual studio .net 2003 and iis and sql server all exist on this box) works great. I display my test page, which loads a dropdownlist on page_load. This works great on my own machine.
When I move the code to our dev environment. Web server and database servers on separate boxes. I get the error "Object reference not set to an instance of an object" when i try to open the connection to the database. I thought it had to do with permissions and I check all through sql server and everything looks great. I then thought it was the connection string. I still haven't ruled this out, but I wrote a quick vbscript app to attach to the database and try to pull a record. The vbscript worked fine. So, the code works fine on my computer, but not on the web server. The connection does work with vbscript, but through my asp.net web app I get the "object reference" error.
All code below...
ASP.NET webpage: private void Page_Load(object sender, System.EventArgs e) {
if( !IsPostBack ) { // Create a command object for the query string mySelectQuery = "select id from vw_abcd order by ID";
SqlCommand myCommand = new SqlCommand(mySelectQuery,sqlConnection1); sqlConnection1.Open();
Connection string on my machine: workstation id=wXXXXXX01;packet size=4096;user id=testuser;password=testpass;integrated security=SSPI;data source=wXXXXXX01;persist security info=False;initial catalog=TestDB"/>
Connection string on web server: network library=DBMSSOCN;data source=xxx.xx.xxx.xxxinstance1;user id=testuser;password=testpass;initial catalog=TestDB
vbscript: Dim connConnection, rstresultset strConnectionString = "driver={Sql Server};server=xxx.xx.xxx.xxxinstance1;user id=testuser;password=testpass;database=TestDB"
Set connConnection = CreateObject("ADODB.Connection")
connConnection.Open strConnectionString Set rstresultset = createobject("ADODB.Recordset")
rstresultset.ActiveConnection = connConnection
rstresultset.Open "select id, comment from testtable", connConnection
Error message and stack trace: Object reference not set to an instance of an object.
at System.Data.SqlClient.ConnectionPool.GetConnection(Boolean& isInTransaction) at System.Data.SqlClient.SqlConnectionPoolManager.GetPooledConnection(SqlConnectionString options, Boolean& isInTransaction) at System.Data.SqlClient.SqlConnection.Open() at Web2.Drilldown.Page_Load(object sender, System.EventArgs e)
I created a CLR procedure with a service reference in Visual Studio 2010 that is being used in SQL Server 2008 R2. We recently tried to deploy it to a 2012 SQL Server, but were unable to due to compatibility issues. When I tried to upgrade the package to Visual Studio 2013 I got this error message:
Unable to cast object of type 'Microsoft.VisualStudio.Data.Tools.Package.Project.DatabaseFileNode' to type 'Microsoft.VisualStudio.Data.Tools.Package.Project.Internal.FolderNode'
I tried to create this using the 2012 Data Tools, but was unable to add a service reference with the GUI. It appears Microsoft has removed this functionality. My company has a third party app that we have limited control over, which is why we need this functionality.
In database projects, VS2015, I want to create some views for me database that will reference another database table using 3 part naming reference.
Works fine in SSMS but when I try and build me project I is throwing up a reference error.
I can't import the other database into this project, so is there a way to suppress the error? I don't really want to exclude these view from the project.
INSERT INTO PRODUCT_SALES (Salesmanid,Productid) VALUES (1,1) INSERT INTO PRODUCT_SALES (Salesmanid,Productid) VALUES (1,2) INSERT INTO PRODUCT_SALES (Salesmanid,Productid) VALUES (1,3)
SELECT * FROM PRODUCT_SALES
/* SalesmanID is reference key from Sales Master and ProductID is reference key from Product Master. How should i restrict user through DB with any constraint check, if user tries to enter
INSERT INTO PRODUCT_SALES (Salesmanid,Productid) VALUES (1,2),
It should throw error , if possible user defined message would be more useful.
I need to create a table (Named as C) with a foreignkey column. That column should references with a primarykey column in table A and a primarykey column in table B. Is this possible?
Does any one has any clue for this error ? I did went through a lot of articles on this error but none helped . I am working in Visual studie 2005 and trying to upload image in sql database through a simple form. Here is the code
using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Data.SqlClient; using System.Web.Configuration; using System.IO; public partial class Binary_frmUpload : System.Web.UI.Page {protected void Page_Load(object sender, EventArgs e) { }protected void btnUpload_Click(object sender, EventArgs e) {if (FileUpload.HasFile == false) { // No file uploaded!lblUploadDetails.Text = "Please first select a file to upload..."; } else {string str1 = FileUpload.PostedFile.FileName; string str2 = FileUpload.PostedFile.ContentType; string connectionString = WebConfigurationManager.ConnectionStrings["GSGA"].ConnectionString; //Initialize SQL Server Connection SqlConnection con = new SqlConnection(connectionString); //Set insert query string qry = "insert into Officers (Picture,PictureType ,PicttureTitle) values(@ImageData, @PictureType, @PictureTitle)"; //Initialize SqlCommand object for insert. SqlCommand cmd = new SqlCommand(qry, con); //We are passing Original Image Path and Image byte data as sql parameters. cmd.Parameters.Add(new SqlParameter("@PictureTitle", str1)); cmd.Parameters.Add(new SqlParameter("@PictureType", str2));Stream imgStream = FileUpload.PostedFile.InputStream; int imgLen = FileUpload.PostedFile.ContentLength;byte[] ImageBytes = new byte[imgLen]; cmd.Parameters.Add(new SqlParameter("@ImageData", ImageBytes)); //Open connection and execute insert query. con.Open(); cmd.ExecuteNonQuery(); con.Close(); //Close form and return to list or images.
} } }
Object reference not set to an instance of an object. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.Source Error:
Line 32: Line 33: string str2 = FileUpload.PostedFile.ContentType; Line 34: string connectionString = WebConfigurationManager.ConnectionStrings["GSGA"].ConnectionString; Line 35: Line 36: //Initialize SQL Server Connection Source File: c:UsersManojDocumentsVisual Studio 2005WebSitesGSGABinaryfrmUpload.aspx.cs Line: 34 Stack Trace:
[NullReferenceException: Object reference not set to an instance of an object.] Binary_frmUpload.btnUpload_Click(Object sender, EventArgs e) in c:UsersManojDocumentsVisual Studio 2005WebSitesGSGABinaryfrmUpload.aspx.cs:34 System.Web.UI.WebControls.Button.OnClick(EventArgs e) +105 System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +107 System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +7 System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +11 System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5102
Each time I press submit to insert data into the database I receive the following message. I use the same code on another page and it works fine. Here is the error:
Object reference not set to an instance of an object. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
Source Error:
Line 125: MyCommand.Parameters("@Balance").Value = txtBalance.Text Line 126: Line 127: MyCommand.Connection.Open() Line 128: Line 129: Try
[NullReferenceException: Object reference not set to an instance of an object.] CreditRepair.CreditRepair.Vb.Creditor_Default.btnSaveAdd_Click(Object sender, EventArgs e) in c:inetpubwwwrootCreditRepairCreditor_Default.aspx.vb:127 System.Web.UI.WebControls.Button.OnClick(EventArgs e) System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) System.Web.UI.Page.ProcessRequestMain()
Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click
If (Page.IsValid) Then
Dim DS As DataSet Dim MyCommand As SqlCommand
Dim AddAccount As String = "insert into AccountDetails (Account_ID, Report_ID, Balance) values (@Account_ID, @Report_ID, @Balance)"
MyCommand = New SqlCommand(AddAccount, MyConnection)
When I add a new item to project in VS2005: Project-->Add New Item --> Sql Database I got a error msg "object reference not set to an instance of an object" after click "Add" button. The SQL Server Express is running. How do I fix this problem?
DECLARE Loan_cursor CURSOR FOR SELECT Loan_No,store FROM loan WHERE maturity_date > '2001-04-30' and loan_no like 'ABL%'
OPEN Loan_cursor
-- Perform the first fetch. FETCH NEXT FROM Loan_cursor
-- Check @@FETCH_STATUS to see if there are any more rows to fetch. WHILE @@FETCH_STATUS = 0 BEGIN Declare @LoanNo varchar(12) ** Set @LoanNo = Loan_No
-- This is executed as long as the previous fetch succeeds. FETCH NEXT FROM Loan_cursor END
CLOSE Loan_cursor DEALLOCATE Loan_cursor
when l run the cursor l get the error Server: Msg 207, Level 16, State 3, Line 15 Invalid column name 'Loan_No'. . If l reference it as Set @LoanNo = LoanTable.Loan_No l get the error
Server: Msg 107, Level 16, State 3, Line 15 The column prefix 'loan' does not match with a table name or alias name used in the query. All l'm trying to do is to compare the loan number that l get from the cursor to the value in the loans table. Maybe reference is a better word
Just i modified one sub stored procedures which is not getting affected in the main stored procedures
Create procedure main as begin set nocount on
--First sp exec Data_transfer_sp
--Second sp Exec Clearance_sp
set nocount off end
In data_transfer_sp,i have commented the select statement but still iam use to the select result while execution the main sp. Note:I have compiled the data_transfer_sp after making comment .Txs in advance
Can anyone see why I would get the 'Object Referenece not set to an instance of an object error in the following code? It happens on this line: MyAdapter.SelectCommand = New SqlCommand(SelectStatement, MyConnection) 'Populate the text boxes from database for alumni fields. Dim MyAdapter As SqlDataAdapter Dim MyCommandBuilder As SqlCommandBuilder Dim DetailsDS As DataSet Dim Row As DataRow Dim SelectStatement As String = "Select ClientID,ClassYear,HouseName,CampusName,EducationMajor,GraduationDate FROM tblclient Where [ClientID]=" & _ ClientIDSent Dim ConnectStr As String = _ ConfigurationManager.ConnectionStrings("TestConnectionString").ConnectionString Dim MyConnection As SqlConnection = New SqlConnection(ConnectStr) MyAdapter.SelectCommand = New SqlCommand(SelectStatement, MyConnection) MyCommandBuilder = New SqlCommandBuilder(MyAdapter) MyAdapter.Fill(DetailsDS, "tblClient")
