TSQL Challenge 46 - Remove leading occurrences of the first character
This challenge is a slightly enhanced version of the ‘remove leading zeros’ problem
2010-12-27
1,729 reads
Jacob Sebastian
TSQL Challenge 45 - Evaluate mathematical expressions presented using
This challenge involves evaluating mathematical expressions presented using Roman Numerals and return the result of each expression.
2010-12-13
1,685 reads
TSQL Challenge 44 – Identify products that belong to each unique color
The first part of your job is to identify the unique color combinations of products and the second part is to identify the products that have the given color combination.
2010-11-29
1,364 reads
TSQL Challenge 43 – Identifying incomplete segments and missing elemen
This challenge involves writing a logic to identify incomplete segments and missing elements in an electronic data integration file exchanged between two applications.
2010-11-16
861 reads
TSQL Challenge 42 – Transform rows to columns with dynamic positioning
This challenge involves writing a logic to change the column position of values in the output based on the presence and absence of other values on each output row.
2010-11-01
2,846 reads
TSQL Challenge 41 - Extract email addresses from text data
This challenge involves extracting email addresses from a table that contains text data downloaded from various websites.
2010-10-18
2,262 reads
TSQL Challenge 40 - Convert string representation of numeric values fr
This challenge involves converting numeric values from binary format to hexadecimal format.
2010-10-04
1,656 reads
TSQL LAB 2 - Writing Conditional WHERE Clauses
Jacob Sebastian takes a look at some different ways to write your WHERE clauses. A good basic article for those starting to work with T-SQL.
2010-07-30 (first published: 2008-02-27)
81,495 reads
XML Workshop 26 – SELECT * FROM XML
This article presents a generic function that makes it easy to query XML documents
2010-06-30
12,300 reads
XML Workshop 25 - Inserting elements and attributes to an XML document
This article from MVP Jacob Sebastian looks at the modify method for changing an XML document.
2010-03-18
10,305 reads
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Question of the Day
Getting the Average
I have this data in the dbo.Commission table in a SQL Server 2022 database.
salesperson commission Brian 12 Brian 16 Andy 7 Andy 14 Andy 21 Steve 20 Steve NULLAll the data is a varchar, and I decide to run this query to get the totals for each salesperson.
SELECT SalesPerson
, AVG(TRY_PARSE(Commission AS int)) AS TotalCommission
FROM commission
GROUP BY SalesPerson
GO
What average commission is calculated for Steve? See possible answers