Scripts

Technical Article

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. 

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2019-11-12 (first published: )

2,103 reads

Technical Article

sp_PerfSQ

A diagnostic tool for identifying Performance features of active SQL Queries. It collects performance detail from DMVs for queries with executing requests and is designed to demonstrate and quantify Query Shaping optimisation techniques by: quantifying query workload and throughput characteristics providing behavioural descriptors of potential performance inhibitors - refer column ThrottlePotential The ThrottlePotential column is […]

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2019-11-07

4,196 reads

Technical Article

Generic trigger for maintaining the Audit Log

This trigger will work even if you don't have the primary key on any table. Mechanism to configure the primary key in config table has been provided. This can be very helpful to solve the system audit requirements without much efforts.

Disclaimer : Audit Log trigger has performance overhead. It’s meant for table which is not frequently updated, deleted or inserted. Please take precaution when creating the trigger on the table having too many columns.

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2019-10-15 (first published: )

3,138 reads

Technical Article

List Extended Database properties for all databases

I am using database properties to add some useful information for each database. Tired of exploring each database from the menu in SSMS to look for specific information, I decided to make a script listing the extended properties for all my databases. I am pleased to offer this to the community 🙂

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2019-10-01 (first published: )

1,540 reads

Technical Article

WorkDay Functions

Functions to list the number of work days in period , determine if a given date is a work day, add work days to a given date.
Uses a table of holidays and a tally table.

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2019-09-24 (first published: )

3,790 reads

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Question of the Day

The Range of Customers

I have this data in the OrderHeader table in a SQL Server 2025 database (ordered by CustomerID ASC):

orderid orderdate               customerid complete
3       2025-05-10 00:00:00.0002          1
21      2024-01-10 00:00:00.0003          1
15      2023-10-28 00:00:00.0004   1
13      2025-03-08 00:00:00.0006          1
11      2024-04-02 00:00:00.0007          1
If I run this query, how many rows are returned?
SELECT *
 from dbo.OrderHeader
 where customerid between 3 and '6'

See possible answers