Handling Schema Changes
Jul 23, 2005
What is the best way to handle schema changes as database needs change.
What I need to find out is
what is the best way to write database interface code in order to be
flexible to schema changes. Would having stored procedures as an interface
mechanism be best so that old app software will still be compatible? It is
impractical for us to upgrade all apps simultaneously, so if a new column is
added to a table, old apps will not fill in this column while newer apps who
support it will.
Thanks
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Sep 27, 2007
Locally I develop in SQL server 2005 enterprise. Recently I recreated my db on the server of my hosting company (in sql server 2005 express).I basically recreated the tables and copied the data in it.I now receive the following error when I hit the DB:The 'System.Web.Security.SqlMembershipProvider' requires a
database schema compatible with schema version '1'. However, the
current database schema is not compatible with this version. You may
need to either install a compatible schema with aspnet_regsql.exe
(available in the framework installation directory), or upgrade the
provider to a newer version.I heard something about running aspnet_regsql.exe, but I dont have that access to the DB. Also I dont know if this command does anything more than creating the membership tables and filling it with some default data...Any other solutions/thought on what this can be?Thanks!
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May 27, 2008
I have 35+ tables and 15+ stored procedures with SchemaA, now I want to transfer them to SchemaB.
I know how to do one by one...!
alter schema SchemaB transfer
SchemaA.TableA
but it will take long time...!
Thanks,
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Apr 12, 2008
Hello everybody!I'm using ASP.NET 3.5, MSSQL 2005I bought virtual web hosting .On new user registrations i have an error =(The 'System.Web.Security.SqlMembershipProvider' requires a database schema compatible with schema version '1'. However, the current database schema is not compatible with this version. You may need to either install a compatible schema with aspnet_regsql.exe (available in the framework installation directory), or upgrade the provider to a newer version. On my virtual machine it work fine but on web hosting i have an error =(What can you propose to me?
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May 8, 2007
Hello,
I would like to use SSIS tool to move the data from one database schema to another database schema.
For example:
Source table has
1. UserName (varchar 20) (no null)
2. Email (varchar 50) (can be null)
Destination table has
1. UserID (uniqueidentifier - GUID)
2. UserName (varchar 50) (no null)
3. EmailAddress (nvarchar 50) (can be null)
4. DateTime
Questions:
1. What controls do I use in my Data Flow to make data move between databases with different data types and include new value in UserID as a new GUID and DateTime as a date (GETDATE)?
OLE DB Source, OLE DB Destination, Data Converson and .....
How do I insert Guid and Date at the same time?
2. I have many tables to do data moving. Any sugestions? How do I architect my project? If I create many data flows for each table - it will look complicated.
Please give me some advices here.
Thanks.
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Apr 19, 2006
I used SSEUtil to add a schema to my database but I am having problems. Used these steps:SSEUtil -c> USE "c:Rich.mdf"> GO>!RUN Resume.SQL//indicates success>SELECT * FROM SYS.XML_SCHEMA_COLLECTIONS>GO//schema not shown in list> USE master>GO>SELECT * FROM SYS.XML_SCHEMA_COLLECTIONS>GO//schema is shown in the queryIt appears that the schema is not added to the desired database, so when I try to use the schema in Visual Studio, the schema does not appear when I connect to the Rich.mdf database. Any ideas on what I am doing wrong or why this might be happening?ThanksKevin
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Nov 21, 2011
I am using sql server 2008 R2.I want to copy all the objects of one schema and put it in another schema. I want to do that from command prompt.
In oracle we can export the objects of one user and import to another user using exp and imp. I want similar type.
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Apr 21, 2006
1) We are writing a custome Source component for Oracle with OCI calls, Could some one please let me know how to Enable Error Handling for the Same,
2) Is it possible to write Custome Error Handeling Component for SSIS? if yes could you please help me on how to write it.
Thanks in advance.
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Feb 25, 2006
Hi,
I am executing script like this. How to check for the errors if "master..xp_cmdshell @bcpCommand" fails. Is there any way to verify that BCP is completed successfully
DECLARE @FileName varchar(50),
@bcpCommand varchar(2000)
SET @FileName = 'E:TestBCPOut.txt'
SET @bcpCommand = 'bcp "SELECT * FROM pubs1..authors ORDER BY au_lname" queryout "'
SET @bcpCommand = @bcpCommand + @FileName + '" -c -U -P'
EXEC master..xp_cmdshell @bcpCommand
Thanks in Advance,
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Sep 7, 2007
it gives error while calling a sql stored procedure as "INPUT STRING WAS NOT IN A CORRECT FORMAT". I am providing the code here.public void get_issid(string cse_email, string tech_email, string subject, string issue_details, string response, string solv_date, out int issid)
{
// Establish ConnectionSqlConnection oConnection = GetConnection();
// build the commandSqlCommand oCommand = new SqlCommand("get_issid", oConnection);
oCommand.CommandType = CommandType.StoredProcedure;
// ParametersSqlParameter paracse_email = new SqlParameter("@cse_email", SqlDbType.VarChar, 50);
paracse_email.Value =cse_email;
oCommand.Parameters.Add(paracse_email);
SqlParameter paratech_email = new SqlParameter("@tech_email", SqlDbType.VarChar,50);
paratech_email.Value = cse_email;
oCommand.Parameters.Add(paratech_email);SqlParameter parasubject = new SqlParameter("@subject", SqlDbType.VarChar, 50);
parasubject.Value = subject;
oCommand.Parameters.Add(parasubject);SqlParameter paraissue_details = new SqlParameter("@issue_details", SqlDbType.VarChar, 500);
paraissue_details.Value = issue_details;
oCommand.Parameters.Add(paraissue_details);SqlParameter pararesponse = new SqlParameter("@response", SqlDbType.VarChar, 500);
pararesponse.Value = response;
oCommand.Parameters.Add(pararesponse);SqlParameter parasolv_date = new SqlParameter("@solv_date", SqlDbType.DateTime);
parasolv_date.Value = solv_date;
oCommand.Parameters.Add(parasolv_date);SqlParameter paraissid = new SqlParameter("@issid", SqlDbType.Int);paraissid.Direction = ParameterDirection.Output;
oCommand.Parameters.Add(paraissid);
try
{
oConnection.Open();
oCommand.ExecuteNonQuery();issid = int.Parse(paraissid.Value.ToString());
}catch (Exception oException)
{throw oException;
}
finally
{
oConnection.Close();
}
}
the stored procedure is:
create proc [dbo].[get_issid](@tech_email varchar(50), @cse_email varchar(50),@subject varchar(50),@issue_details varchar(500),@response varchar(500),@solv_date datetime, @issid int output)
as
select @issid=tech_response.issue_id from tech_response,issue_details where tech_response.tech_email=@tech_email and tech_response.cse_email=@cse_email and tech_response.subject=@subject and tech_response.issue_details=@issue_details and response=@response and solv_date=@solv_date and tech_response.issue_id=issue_details.issue_id
requested to help in this
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Nov 14, 2007
I'm unsure how to handle an SQL Exception correctly when the database is unavailable/offline.
I have my aspx file with the C# code-behind, but all of the SQL stuff is done in a separate code file in the App_Code directory.E.g.
CODE-BEHINDDatabaseModifier.deleteUser(username);
DATABASEMODIFIER.cspublic static void deleteUser(string username){ SqlConnection conn = SqlLogin.SqlConnect; SqlCommand command = new SqlCommand("DELETE FROM <table> WHERE Username = '" + username + "'", conn); conn.Open() command.ExecuteNonQuery(); conn.Close()}
Now, that code works perfectly, however if the database I'm connecting to is offline, an SQLException is thrown and because the SQL is handled in my DatabaseModifier class, I'm not sure how to handle it correctly.If I use a Try/Catch block in my code-behind, it doesn't get thrown because the error occurs in my DatabaseModifier class. If I use a Try/Catch block in my DatabaseModifier class, what can I put in the catch block that will inform the user of the database being offline and/or how can I perform a url redirection?
Any help is greatly appreciated.
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Apr 16, 2008
Hi there,
Can anyone help me in catching @@error value.
I have a stored procedure which return @@error value, I need to read that in my dataaccesslayer and act according to it.
how do I catch the return value from stored procedure in my dataaccesslayer.
if I am not wrong @@error return a bool value
Thanks in advance.
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May 1, 2008
dear friends i am writng a store procedure to insert into a two table .table 1 data inserted but when i inserting into a table2 it have some error at that time table 1 data also want to delete.give suggestions
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May 7, 2008
Hi All, Please help me out how to implement the locking in below scenarioReq - There are two tables Table1 & Table2 If I will insert in table1 then related data fields will be auto updated in table2 , similarly based on the data in table2 table1 data needs to be updated. Now the sync of table1 & table2 is working fine.My prob is we are handling the updation/insertion from the UI screens . Two separate screen for each table. When we have multiple user accessing the screens say - User1 updates table1 and User2 updates table2 then we need to implement the locking so that at one time one screen will allow updation in the table1 and hence table2.The other screen shouldnt allow updation in table2 and hence in table1.This is very common locking functionality ...but am not getting any way to implement it , Please advise.Srain.
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Mar 25, 2006
Hello to all,
On my webPage I have Used one SQLDataSource to access DataBase. Now whenever some error occures it shows error page by default. I am not able to catch Errors and tackle in my way...
Furthermore in this new structure of accessing DataBase even I do not know where to write Try... Catch...
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Mar 14, 2000
I am writing a stored procedure that loads transaction logs to a database and I am having trouble trapping meaningful error messages. When ever the load fails, it gives me two error messages, the first one is meaningful and the second one just states that the load ended abnormally. Unforunately, when I capture the error using @@error after the load statement, it is the second error message that I am getting.
Is there anyway to trap the first error message as well?
Thanks
Angela
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Jan 21, 1999
I currently have defined a source server, a transformation, and a destination server using DTS. How and where do I create an error routine that would capture any and all errors that would occur. This would include connection error, transformation errors etc. I know the errors can be written out to a text file but I would like them written to a table on my destination server.
The DTS package will be called from an external program using the xp_cmdshell extended stored procedure. We are using it this way as a flag so if one transformation fails it will return a 1. If all are successful it will return a O. These will be our flags to check the errors table in the destination server.
Could someone tell me where this code is to go and what the code will look like. Samples would be the most help.
Thanks
Tom
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May 21, 2004
is there any way to do sometype of Error handling with in a Stored Proc? Example, If I have a deadlock, can I trap that error and execute other sql code or will always simply kill the stored proc?
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Dec 12, 2006
I have a composite unique key on the audit_hub table that includes TimeStamp, UID, Type, Mailbox all as part of the unique key.
I’m trying to do inserts, and know that in some cases I will violate unique index.
I’m using stored procedure, and want to handle the error gracefully there – just move on.
Reading from text-based log files via .vbs and get back the nasty popup window.
Looks like I have it right but obviously I don’t considering how it’s (not) working.
I thought error handling would be the simplest way to avoid dupe records. Might be necessary to run the same log in more than once, and only want to add the new records since the last insert session.
Here’s what I have. It obviously simply halts and complains immediately after the insert attempt.
ALTER procedure eml_HubInsert
@TimeStamp bigint
,@UID varchar(255)
,@Type varchar(255)
,@MailBox varchar(255)
,@ServerID varchar(50)
as
insert into audit_hub (TimeStamp,UID,Type,Mailbox,ServerID)
values (@TimeStamp,@UID,@Type,@MailBox,@ServerID)
if @@ERROR = 2601
begin
return 0
end
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Jul 25, 1998
Hallo... and sorry about my english
1 question:
What Error-Handling msut i mplement in a trigger, who is updating permanently two tables
in a database (with the follow commands: insert, delete and update) ???
thank you !
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Apr 18, 1999
Hi,
Im Nithyananda working on a project with SQL server 6.0
Im having a stored procedure which inserts into a table .
If I violate the primary key constraint on the table , I get a 2627 error.
I would like to replace this error with my own.Could u tell me how to do it?
Im an ORACLE guy and relatively new to SQL server.
Is it possible for me to propogate the same error message to any front end?
In my case ,Im using VC++ as front end.
Could someone also tell me the way of calling a SQL stored procedure from
VC++?
Regards
Nithyananda
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Dec 5, 2005
I have some stored procedures that insert information from a third party plugin that hooks into our database (so I can't do any client side validiation). The problem I am encountering is that some of the fields I use need to be in DateTime format. In order for SQL SERVER 2000 to be able to insert this field, the Date has to be in the correct syntax or an error is thrown.
Is there any way to do something like this in SQL SERVER 2000
Code:
DELCARE @SomeDate DateTime
Try
Set @SomeDate = CONVERT(DateTime, Parameter1, 101)
Catch
return custom error describing what field is formatted
wrong and exit stored procedure
END
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Mar 3, 2005
I am running some bcp copies through a Sql job. I am copying 35 tables in individual steps. However, sometimes the bcp step fails to copy the data, and I want the step to fail if the data is not copied properly. Is that possible? If so, how? Any help is greatly appreciated.
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Mar 8, 2005
I have this stored procedure that I need to add error handling to. How would I do that??
REATE PROCEDURE November2000
AS
SELECT TM#, LASTNAME, FIRSTNAME, FINALSUITDONE
FROM dbo.EmployeeGamingLicense
WHERE (FINALSUITDONE BETWEEN CONVERT(DATETIME,
'2000-11-01 00:00:00', 102) AND CONVERT(DATETIME,
'2000-11-30 00:00:00', 102))
GO
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Apr 10, 2006
Hey Gang, got one for you.
error message:
Server: Msg 137, Level 15, State 2, Line 19
Must declare the variable '@EFFECTIVE_DATE'.
Code:
SELECTLOG_PK,
LOG_REQUESTOR,
LOG_REQ_PHONE,
LOG_CHAR_60_1,
LOG_CHAR_30_4,
LOG_CN_FK,
LOG_CREATE_DATE,
LOG_REQUEST,
(LOG_STATUS),
(LOG_TYPE),
LOG_FU_FK,
LOG_FB_PK,
LOG_LT_FK,
LOG_CREATE_DATE
FROMf_Requests
WHERELOG_RQ_FK IS NOT NULL AND
LOG_LT_FK <> 10174 AND
LOG_RC_CODE = S
AND (LOG_MOD_DATE > @EFFECTIVE_DATE OR
LOG_CREATE_DATE > @EFFECTIVE_DATE)
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Feb 2, 2004
ppl,
i wrote this sql, seems v.straightforward to me.
It works first time round, sets the foreigh key, but second time round should error out to the handler - but it just reports the errors to the message out and dosn't seem to fire the errhandler.
Its gotta be a simple mistake - perhaps you could show me.
DECLARE @ErrorMsg int
BEGIN TRANSACTION
ALTER TABLE TPH_GlobalProductHierarchy
ADD CONSTRAINT SalesSubGrp_fk FOREIGN KEY (SalesSubGroupingID)
REFERENCES TPH_SalesSubGrouping (ID)
SET @ErrorMsg =@@ERROR
IF @ErrorMsg <>0 GOTO ErrorHandler
PRINT 'Success'
COMMIT TRANSACTION
ErrorHandler:
IF @ErrorMsg <> 0
BEGIN
PRINT 'Rollback'
ROLLBACK TRANSACTION
END
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Mar 8, 2004
hi friends,
I like to put a set of sql statements under a transaction and wish the sql server to take care of commit / roll back the entire set depending upon the success/failure of the statements in the set. I want the whole set is either to success or to failure.
When I go through the docs, i find that SQL Server 2000 operates three transaction modes:
Autocommit transactions : Each individual statement is a transaction.
Explicit transactions : Each transaction is explicitly started with the BEGIN TRANSACTION statement and explicitly ended with a COMMIT or ROLLBACK statement.
Implicit transactions: A new transaction is implicitly started when the prior transaction completes, but each transaction is explicitly completed with a COMMIT or ROLLBACK statement.
As one can see, it seems that it is not possible to define "atomic compound sql statements". Even if i used explicit transaction, it is not possible to achieve this, since i couldn't find a mechanism to handle errors for a group of statements.
I wonder how to write atomic compound sql statement in the sql server.
can anybody please help me on this....
Jake
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Apr 20, 2004
How can i use the system error messages. With RAISERROR
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May 7, 2008
Hi there
I got the following returned simple dataset as follow:
ReportViewType; Category; Name; Units; Price;
LIST_VIEW; FRUITS; Apple; 1; $10
LIST_VIEW; FRUITS; Banana; 2; $11
LIST_VIEW; CARS; Corolla; 8; $100
LIST_VIEW; CARS; BMW; 10; $200
I've managed to grouped by Category field nicely and added extra calculated column for handling to total plus as well as Total for each group plus added a new row for TOTAL in the TABLE and returned as follow:
FRUITS
Apple; 1; $10; $10
Banana; 2; $11; $22
TOTAL FRUITS; $32
CARS
Corolla; 8; $100; $800
BMW; 10; $200; $2000
TOTAL CARS: $3000
TOTAL: $3032
Now I want to put another extra row underneath TOTAL for handling the calculated but the business rule is only for displaying from the first group for instance:
TOTAL: $3032
Calculated Average per fruits: $1010.67 ($3032 / 3 UNITS).
3 UNITS is coming from Units for Apple and Banana.
I don't know if I can do this cause i did try to use
=SUM(IIF(Fields!Category.value = "FRUITS", Fields!Units.Value, 0))
But it's successfully compiled but the report result error (#Error) on that field only. Any ideas?
I thought a simple like this can be handled quite easily instead of creating a new report view type in the the same dataset to handle this particular extra line.
Waiting your comment/feedback.
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Jun 4, 2008
Can i any one help regd error handling while executing stored procedure.
Sample Sequence of execution :
CREATE procedure RBI_Control_sp
as
begin
set nocount on
begin try
BEGIN TRANSACTION
--Truncating the Table in ramcovm392(fin_ods)
exec fin_ods..trun_sp
--Data Transfer From the Live Server to Dw-Server
exec fin_ods..RBI_Data_Transfer_sp
insert into fin_wh..Status_report([object_name],row,[date])
select 'Data Tranfer','SUCCESS',getdate()
COMMIT TRANSACTION
end try
begin catch
<b> [i need to insert the type of error in status report table]</b>
rollback transaction
insert into fin_wh..Status_report([object_name],row,[date])
select 'Data Tranfer','FAILURE',getdate()
end catch
set nocount off
end
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Mar 8, 2006
Hi all,
I am calling some stored procedures from ASP. These strored procedures have to deal with lots of deletes and updates. So i have thought of implementing transaction commits and rollbacks. But if a rollback occurs in these stored procedures, i want to get a value back to asp page, based on this value i will run the next stored procedure.
Can anybody give me some examples for doing this.
Somebody please help me with this!!!!!!!!!
Thanks a lot in advance,
Nitu
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Jan 5, 2007
hello. below is a very simple SP i have coded to insert a user into my database. i have created a unique index for the username column on my database table. if the username already i want to convey this to my C# code which is attempting the insert. i am using a combination of TRY/CATCH, RAISERROR and @@ERROR here to achieve my aim. could somebody please look at my code and tell me if the error handling code is OK, or is it overly complicated?
AS
SET NOCOUNT ON
DECLARE @Error int;
BEGIN
BEGIN TRY
INSERT INTO Users(
Username,
Password,
FirstName,
Surname,
DateBirth,
Email,
Id_Country)
VALUES(
@Username,
@Password,
@FirstName,
@Surname,
@DateBirth,
@Email,
@Id_Country)
END TRY
BEGIN CATCH
SELECT @Error = @@ERROR;
IF @Error = 2601
RAISERROR('The username already exists.', 15, 1)
ELSE
RAISERROR('An unknown error occurred.', 15, 1)
RETURN @Error;
END CATCH
SELECT @Id_User = SCOPE_IDENTITY()
END
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Jun 5, 2007
Hi,
I am using SQL Server 2000 and the clients would like to archive and remove some of the old records from certain tables in the database. I would like to know the methods of setting ID as autogenerated and if the ID will be initialized to 0 again if records are removed, and if autogenerated IDs reuse missing IDs (e.g. I have ID 1-10, remove ID 2, will the next new record be ID 2?)
We need the ID to keep incrementing and not reuse missing IDs, nor reinitialized once we've archive the old records, and I was thinking of storing all the IDs in a table. Just asking for the possibility of SQL Server autogenerated ID does this.
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