Control If A SQL Database Exists Before Its Creation Or Deletion
Aug 17, 2006
Hi,
I'm using SQL Server 2005, and I would like to understand how to create and to drop a database without errors:
Infact, if I try to create a database that already exists, SQL Server throws the error "Impossible to create the database because it already exists", and if I try to drop a database that doesn't exist, SQL Server throws the error "Impossible to drop the database because it doesn't esist".
Before creating or dropping a database, I should control if it exists or not...
Is there a method to do that?
I found that such control for a table is the following one (in this case, I drop the table only if it exists):
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[Table1]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[Table1]
I tried to adapt the statement to the database case, modifying it as follows:
if exists (select * from dbo.sysobjects where id = object_id(N'[Database1]') and OBJECTPROPERTY(id, N'IsDatabase') = 1)
drop database [Database1]
but it didn't function (it was a blind attempt).
Can you suggest me a statement to do that?
Thank you very much
Basically, I create a database with sql, then I delete it manually(not via sql statment. This is a problem which I realise. In fact, you can't delete the database because the VS 2005 still is using it) I run the same code again, then it says the database still exists, even it is physically destroied.
------Here is the errors: System.Data.SqlClient.SqlException: Database 'riskDatabase' already exists. at System.Data.SqlClient.SqlConnection.OnError(SqlExc eption exception, Boolea n breakConnection)
------The evidence that the database doesn't exist physically: Unhandled Exception: System.Data.SqlClient.SqlException: Cannot open database "riskDatabase" requested by the login. The login failed.
------The code: /* * C# code to programmically create * database and table. It also inserts * data into the table. */
using System; using System.Collections.Generic; using System.Text;
using System.Configuration; using System.Data; using System.Data.SqlClient; using System.IO;
namespace riskWizard { public class RiskWizard { // Sql private string connectionString; private SqlConnection connection; private SqlCommand command;
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I have a need to assume that there will always be a master database for any SQL server instance. Want to confirm whether this assumption is true or not.
Hi, I am not sure is this a proper place for my question. All we know that creating a database can be done as the following. 1) Create a project named DBExample 2) Click Add->New Item. 3) Select SQL Databse and type a name.(Ex: Database1.mdf) A database is added to the project 4) Then add table and input values. 5) Set the primary key.... My question is I parsed a text file to form a 2d string array x. How can I convert x into the database?
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I downloaded the sample database AdventureWorks from microsoft . When I run the download it created the data and log files under data folder in MSQLalong with other data and log files of master databases etc. However I do not see this database in SQLserver management studio. Can some one help me how to fix this so that I will be able to see this database in management studio.
I am downloading this for SQL server reporting purpose
if i open the management studio express and trying to create a database by right clicking the server name and trying in the new query window,im getting error as
CREATE DATABASE permission denied in database 'master'.
I tried finding any info regarding this approach and I can't find any, so here I am (again!).
I'm trying to create a database using SMO on a freshly installed SQL Server Express (not going through the advanced install, not going through the surface area configuration, so a lot of things are "wrong").
I get an error
- use SMO to try and create a database; this is the pseudo-code combo used:
1. create new Smo.Database object;
2. create new primary file group and data file for that database (using Smo.FileGroup and Smo.DataFile); add them to the database.
3. invoke Create(). catch exception with the following details:
Exception details:
Microsoft.SqlServer.Management.Smo.FailedOperationException was caught HelpLink="http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=9.00.2047.00&EvtSrc=Microsoft.SqlServer.Management.Smo.ExceptionTemplates.FailedOperationExceptionText&EvtID=Create+Database&LinkId=20476" Message="Create failed for Database 'NewDatabase'. " Source="Microsoft.SqlServer.Smo" Operation="Create" StackTrace: at Microsoft.SqlServer.Management.Smo.SqlSmoObject.CreateImpl() at Microsoft.SqlServer.Management.Smo.Database.Create() at Penta.Core.Library.Sql.Classes.Penta_SqlDatabase.Create() in C:Documents and Settings[...]
InnerException:
{"Directory lookup for the file "C:\Documents and Settings\[...]\NewDatabase.mdf" failed with the operating system error 5(Access is denied.). CREATE DATABASE failed. Some file names listed could not be created. Check related errors."}
Seems like user rights error.
Long story short, the only way the creation step works is if I change the Log on for the SQL Express service from the default Network Service to Local System (either through code or not).
Now, I know LocalSystem is not a wise idea, but it seems to be the only way.
I know it's probably something stupid, but what am I missing?
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I've never scripted a creation of a database and it's schema,I have started to put the script together and wondered if the following two scenarios were possible and if so could the following be possible and if so could you show me.
Scenario 1: Before the script runs it checks to see if a database of the same name exists. In this example the database name is "database1". If it does the script will stop and display a message along the lines of "You are trying to create a database, which name already exists. Please either drop or rename the current database and rerun this script."
Scenario 2:The more difficult one I think. Is that it checks to see if "database1" exists. If it does it displays a message along the lines of "The database you are trying to create already exists. Please confirm that you either want to Drop the Database" You then press a key on the keyboard to continue the script and the database is dropped. It will then tell you to rerun the script in order to create the "database1" database. Or you could even give them the option to either drop the database or rename it with "_todatdate" at the end of it, but if you can get the script to do different things with different keyboard strikes?
DATABASE1 CREATION SCRIPT Author: Ryan Keast
The following script creates a DATABASE1 database. */ /*DATABASE1 database creation */
the following msg appears whn i try to create a new database in Microsoft Sql Server Management Studio Express. I m on Vista Basic and using a administrator account...plz help.... i have my project whose backend is SQL 2005.
------------------------------------------------
TITLE: Microsoft SQL Server Management Studio Express ------------------------------
Create failed for Database 'timepass'. (Microsoft.SqlServer.Express.Smo)
For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=9.00.2047.00&EvtSrc=Microsoft.SqlServer.Management.Smo.ExceptionTemplates.FailedOperationExceptionText&EvtID=Create+Database&LinkId=20476
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We have a production database, but due to the crippling load of somereporting tools, we are looking to have a separate reporting database.Due to it's nature, the reporting database doesn't need to be as upto date as the master, perhaps it could be refreshed every evening?What I wish to know is the best way to go about this. Replicating awhole database seems excessive as there are 7000+ tables and we don'tneed it so closely matching the production database. Log shippingalso seems out as we need the reporting database to be highlyavailable and if we keep applying transaction logs ever 15 minutes orso, we need to kick all the users out.Is there a way of scripting or automatically getting SQL Server 2k tocopy over the last full backup it did and apply this to anotherserver? Also if we used this method, what would happen to the usersstored in the database? Would I have to keep re-adding them after theupgrade?Is there a better way to tackle this problem? All help gratefullyreceived. We are running SQL Server 2000 Enterprise Edition on aWindows 2000 Server machine.Thanks.
I think its silly question but i expect some solution .
Is there any way to create sql sever database by using VB.NET code ? I have to create database,tables,sps and also transfer the data from one database to newly created database.
Please, if somebody have some solution then guide me in detail.
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I am unable to create the personal.mdf when I run my homepage. I get the following error Failed to generate a user instance of SQL Server due to a failure in starting the process for the user instance. The connection will be closed. I am new at this stuff and any help will be welcomee. . thanks Seth
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Both within the login properties of the select user (User mapping) is listed as Default Schema, dbo and within the permissions of the database listed as user with connect permissions.
I have other users configured as sysadmin and they do not get this rights (They are not expliticly listed within user mapping with dbo or permissions as user within the database).
I've inherited this system and wonder if the user has somehow changed the new database procedure so it changes the default permissions of new databases.
Any way to check what he's done, I can see no differences between him and the other sysadmins but he's definatly specifically listed as a dbo on all new databases.
Although I don't mind him having access, he's a sysadmin after all, I'd like to make it uniform thoughout the system, i.e. using the inhertited permissions rather than specific permissions that seem to be created when the new database is created.
When I create a database from inside of Visual C# Express, why can't I view it with the manager from the SQL Server Express Edition? I mean, it does not appear at all. Is there any problem?
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