TSQL Challenge 58 - Playing Chess in TSQL – Part 1
Your job is to read the input string and generate a result set that represents the position of pieces in a chess board.
2011-06-13
1,778 reads
T-SQL Challenges
TSQL Challenge 57 - Identify rows that match the rollup trade data
Your job is to scan the trades data and identify combination of trades that match a given rollup data.
2011-05-30
909 reads
TSQL Challenge 56 - Create a Sierpinski carpet using TSQL
This challnge invites you to generate a Sierpinsky carpet using TSQL
2011-05-16
2,528 reads
TSQL Challenge 55 - Multiply two very long decimal strings and return
This challenge to multiply two positive integer strings and return their product. The strings can be really long: up to 1024 digits
2011-05-02
1,320 reads
TSQL Challenge 54 - Find the longest matching area code
Your job is to write a query that identifies the longest matching country/area code from each phone number based on the information stored in an area-code reference table.
2011-04-18
1,214 reads
TSQL Challenge 53 - Finding empty and non-empty intervals
A SQL Server instance is set up to log the session start time and end time into a table. Given this table, your job is to find all time intervals in which no one is logged in.
2011-04-04
1,545 reads
TSQL Challenge 52: Recursive Wage Calculation in a Parent-Child dimens
This challenge is intended to calculate company's wage spent below a top level manager.
2011-03-21
1,650 reads
TSQL Challenge 51 - Convert long Binary strings to Decimal strings
This challenge invites you to write a query that converts binary values into decimal format.
2011-03-07
6,715 reads
TSQL Challenge 50 - Extracting a specifical range from random data wit
The purpose of this challenge is to test your query writing skills with a limited set of TSQL keywords.
2011-02-21
1,717 reads
TSQL Challenge 49 - Identify overlapping time sheet entries of field t
Several technicians are sent to a customer premises to do a certain maintenance work. Your task is to process the activity log entered by each technician and identify overlaps.
2011-02-07
1,411 reads
Blogs
The SUM of Nothing: #SQLNewBlogger
By Steve Jones
I caught this interesting item over on Pinal Dave’s blog: Eleven Interview Questions that...
How to Move the SSMS Status Bar to the Top and Color-Code SQL Server Connections
By Hemantgiri
I use color-coded connections in SSMS to distinguish Production, Pre-Production, UAT, and Development. But...
Forums
Building a SQL Server Fleet Audit That Leadership Actually Reads
Comments posted to this topic are about the item Building a SQL Server Fleet...
Smart AI Agents and Data Security
Comments posted to this topic are about the item Smart AI Agents and Data...
RegEx Functions IV
Comments posted to this topic are about the item RegEx Functions IV
Question of the Day
RegEx Functions IV
I have this data in a table in a SQL Server 2025 database:
EmailAddressID EmailAddress 7 dylan0@ADVENTURE-WORKS.COM 8 Diane1@ADVENTURE-WORKS.COMIf I run this query, which row(s) are returned?
SELECT top 10 * FROM person.EmailAddress WHERE REGEXP_LIKE(EmailAddress, '^D', 'i') AND BusinessEntityID IN (7,8)See possible answers