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The Idempotent TSQL SQLChallenge (28 minutes)When writing TSQL, it’s often useful to make your TSQL idempotent – a fancy word, which in the case of databases really just means: you can run the command again and again and it will make sure that you have the intended effect, without causing problems by being run more than once. |
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Who Made That Schema Change? An Event Notification SQLChallenge (27 minutes)In this challenge, you get to take a crack at creating an Event Notification to track schema changes. |
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Who Made That Schema Change? A DDL Trigger SQLChallenge (28 minutes)In this challenge, you get to take a crack at writing a DDL Trigger to track schema changes. |
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A Query Writing SQLChallenge: The Most Unique Names (23 minutes)Flex your T-SQL skills: you’re challenged to write four different (but related) queries in this query writing challenge. |
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A Dynamic SQLChallenge (32 minutes)In this challenge, you are tasked with editing a stored procedure to gather data from multiple databases. What’s the most efficient way to do it? Try your hand at the challenge, then check out three different suggested solutions. |
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Tune the Peak Years Procedure - SQLChallenge (52 minutes)Ready to tune some TSQL? In this challenge, you’re given a database to restore. You’ll create two indexes and a constraint in the database– and you aren’t allowed to change those. |
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Tuning a Stored Procedure - SQLChallenge (1 hour 10 minutes)Your challenge is to identify which statement is slowing down our stored procedure the most, then tune the code to speed it up. |
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Deduplicate Indexes - Level 1 SQLChallenge (56 minutes)Your challenge is to de-duplicate the indexes on a table in a sample database. Can you predict which indexes are the safest ones to drop? |
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Index Design SQLChallenge - One Year Wonders (50 minutes)This challenge comes in three possible levels of difficulty: choose one or work through them all! |
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Speed Up the Popular Names Query SQLChallenge (46 minutes)You’ve got a query that is just too slow! |
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Forcing Parallelism SQLChallenge (48 minutes)A database administrator has changed Cost Threshold for Parallelism on the instance, and you’ve got a query that’s slowed down. |
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Defuse the Deadlock SQLChallenge (23 minutes)Sharpen your skills at fighting blocking and deadlocks. |
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