2023-06-28
434 reads
Execute AS
Execute As
Learn how you can use Execute As in a stored procedure to control permissions. This article includes an example that limits access to encryption routines for users.
2013-10-11 (first published: 2011-02-02)
18,392 reads
Context Switching or Database Impersonation using EXEC AS
SQL Server 2005/2008 provides the ability to change the execution and security context with the EXEC or EXECUTE AS clause to allow a user to perform high privileged activities without allowing the user to have high privilege access.
2009-07-17
2,114 reads
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Question of the Day
ORDER BY alias
There is a table tmp_tab:
CREATE TABLE tmp_tab ( id int, val int );
INSERT INTO tmp_tab VALUES (1, 1), (2, NULL), (3, 3), (4, 4), (5, 5);You want to order the rows ids by the following expression:
ISNULL(val, id) + 1Which of the following queries produces the expected ordering and why? (Select all correct) See possible answers