Computed Column Indexes

ASCII Text Dump

Introduction Recently, I had the task of analyzing a varchar field for special characters. The field contained text entered by the user with a standard US keyboard; however, the proprietary software was breaking up the text and delimiting it with characters whose ASCII values were above 127. Eyeballing the text that I dumped using a […]

Function and Queries to Convert Hierarchical Adjacency to Nested Json Arrays

This script converts hierarchical adjacency into nested json rows which contain the recursive "downlines" of each node.  The table-valued function treats each row in the original adjacency as the root node in a recursive common table expression. 

The Derived Table

Ending a line with a Backslash

The Computed Column Results

What Does PERCENTILE_CONT Do?

In this article, Kathi Kellenberger takes on a logic puzzle in trying to understand how the windowing function, PERCENTILE_CONT, works.

The Top Ten Percent

Using OFFSET for Paging

This article shows the basics of the OFFSET command.

T-SQL query to copy data from one database to another database

T-SQL query to copy the rows of all the tables from one database to another database only if they have rows in Source DB and exact same Schema in both Source and Destination DB.