How To Find A Perfect Match
This article presents a way that finds a perfect match in any bipartite graph or shows why one cannot exist.
2021-09-06
2,914 reads
Mathematics
Navigating Trees With CTE
Introduction This article shows how common table expressions (CTE) in SQL Server are naturally suited for navigating trees, such as finding its longest path, or diameter. Recall that a tree is an undirected graph where unique paths exist between any two nodes (i.e. vertices). Any node may be selected as its top node, with its […]
2021-04-19
7,942 reads
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Has the PK been used --
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Question of the Day
Has the PK been used --
You're analyzing a query execution plan in SQL Server to determine whether the query optimizer chose to use a primary key index. Which Dynamic Management View (DMV) would you use to verify the usage of the primary key in the plan?
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