T-SQL Challenges

Technical Article

TSQL Challenge 19 - Working with consolidated calculations on hierarchical structures

  • Article

This challenge involves generating an organizational hierarchy and calculating the total orders created by each employee and his/her subordinates. It involves a number of challenges such as generating a resultset in the correct hierarchical form, calculating the orders created by each employee and his/her subordinates and finally calculating the total orders created by self and all the subordinates.

2009-12-14

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Question of the Day

BIT_COUNT() III

In SQL Server 2025, I run this code:

select bit_count(-1)
What is returned?

See possible answers