In a previous article I described how to use a certificate to sign a stored procedure. Part of that article showed how to copy the certificate between databases by using a backup/restore method. This article shows another method – scripting. Continue reading
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Using a Certificate to Sign a Stored Procedure
24 Apr
And how to assign Server-Level permissions to a database user.
Background
In a previous article I gave an example of assigning permissions to a user and making use of the EXECUTE AS instruction. This is a very useful way of assigning database permissions in a very granular way, where a user should not have the associated role for those permissions.
However, if the permission required relates to a server-level role then another method is required. Continue reading
Using EXECUTE AS to control data access
17 Apr
Introduction
Ownership chaining is one process that SQL Server uses to allow stored procedures access to tables where the user might not have permission. It has issues with stored procedures that have dynamic sql – EXECUTE AS is one solution. Continue reading
Automatic Data Purging With Partition Truncation
21 Feb
Some years ago a wrote an article about automatic data purging with partition switching. Having moved to SQL Server 2016 recently I have encountered the new ability to truncate individual partitions, rather than switching data out.
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Shredding JSON Nested Arrays
5 Feb
Whilst reading up on SQL Server 2016 JSON functionality I have seen many examples of extracting data from a JSON array. However, I wanted to work out how to extract data from an array within an array – for example, an array of customer data where each customer has an array of order details.
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SESSION_CONTEXT – Basic Examples
1 Feb
Background
For a long time, web developers have been able to store session information. SQL Server has CONTEXT_INFO, which is a very poor implementation of a session variable. However, with SQL Server 2016 there is now a far more flexible SESSION_CONTEXT feature available.
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TABLESAMPLE – Basic Examples
24 Jan
Whilst reading an article on Quora I saw mention of TABLESAMPLE. I had never heard of it and upon investigation it piqued my interest.
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