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The Suggested Shopping List Problem...

Imagine a web-based shop where users define product filters like: "its red", "its in the kitchen" or "has the word 'auto' on the name"; and every criteria has a weight that contributes to the final...

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Updating an index with -1 or 9999, what is faster ?

Scenario: A 100M record table A nonclustered index orver an integer column ordered forward. ( but could be a clustered index for any purpose). Action: Set this record as inactive by either updating...

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How to avoid deadlocks and "ghost reads" on a very-high concurrent process ?

I am experiencing some performance issues with locks/deadlocks in a very simple statement executed by hundreds of executions in parallel each second... Basically we have two tables: counter( id,...

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Full Text Search Optimization

Hi, I am having a hard time trying to optimize a **Full Text Search** ( FTS ) on a ~1 billion rows table ( around 18Gb of reserved space used ). The main problem seems the amount of rows returned and...

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