asp.net code 39 barcode

asp.net code 39 barcode

asp.net code 39

asp.net code 39 barcode

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You can also use sys.fn_builtin_permissions to drill down on any particular permission. For example, the next SELECT statement and its result set drill down on the properties of the ALTER ANY LOGIN permission. Notice the WHERE clause criterion explicitly references the designated permission. In addition, the securable class is now SERVER, which is the securable class with the ALTER ANY LOGIN permission. The covering permission, or parent of the ALTER ANY LOGIN permission, is the CONTROL SERVER permission. SELECT class_desc 'class', permission_name, covering_permission_name 'covering_permission', parent_class_desc 'parent_class', parent_covering_permission_name 'parent_covering_permission' FROM sys.fn_builtin_permissions(N'SERVER') WHERE permission_name = 'ALTER ANY LOGIN' class permission_name covering_permission parent_class parent_covering_permission ------ --------------- ------------------- ------------ -------------------------SERVER ALTER ANY LOGIN CONTROL SERVER

In this example, we will set one date and time and then return the day of the week. We know this to be a Monday. DECLARE @StatementDate datetime SET @StatementDate = '24 March 2008 3:00 PM' SELECT DATENAME(dw,@StatementDate) Figure 11-23 shows the results after executing this code.

Perhaps the easiest way to administer permissions for server-level tasks is to assign logins to fixed server roles. SQL Server Express defines eight fixed server roles. Each of these roles has a set of permissions associated with it. By assigning a login to a fixed server role, you cause the login to inherit the permissions associated with the role.

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If any of statements have an error, then no further processing within that block will execute, and processing will switch to the second block, BEGIN CATCH BEGIN TRY { sql_statement | statement_block } END TRY BEGIN CATCH { sql_statement | statement_block } END CATCH When you generate your own error via a RAISERROR, then a bit of care has to be taken with the severity setting, as this will determine how your code works within a TRY..CATCH scenario If you raise an error with a severity level of 0 to 10, then although an error is generated and will be received by the calling program, whether that is Query Editor or a program such as C#, then processing will continue without moving to the CATCH block This can be seen as a warning level.

You can use the sp_addsrvrolemember system-stored procedure to add a login to a fixed server role. You can add a single login to multiple fixed server roles in successive executions of sp_addsrvrolemember. You can remove a login from a fixed server role with the sp_dropsrvrolemember system-stored procedure. As mentioned in the Exploring Principals section earlier in this chapter, there are three system-stored procedures to help you explore fixed server roles and the logins within each role (sp_helpsrvrole, sp_srvrolepermission, and sp_helpsrvrolemember). When you initially create a login, the login can connect to a server instance, but it usually has no permissions associated with it. This section shows you how to empower a login to create another login as well as how to create a database. Instead of granting these precise permissions, you learn how to assign a login to fixed roles that include these permissions along with others because it is often reasonable to assign clusters or related permissions. For example, you may want a login that can create other logins to also be able to drop logins and to be able to add and drop users associated with those logins. The samples for this section reside in AssigningFixedServerRoles.sql.

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Changing the severity level to 11 or above will transfer the control to the CATCH block of code Once within the CATCH block you can raise a new error, or raise the same error by using values stored within SQL Server system functions The system functions that can be used to find useful debugging information are detailed here: ERROR_LINE(): The line number that caused the error or performed the RAISERROR command This is will be physical rather than relative, ie, you don t have to remove blank lines within the T-SQL to get the correct line number, unlike some software that does require this ERROR_MESSAGE(): The text message ERROR_NUMBER(): The number associated with the message ERROR_PROCEDURE(): If you are retrieving this within a stored procedure or trigger, the name of it will be contained here.

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