Welcoem to posts!!
in the future - u will be able to do some more stuff here,,,!! like pat catgirl- i mean um yeah... for now u can only see others's posts :c
What's the purpose of a CASE statement in SQL?
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What is database cardinality?
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What's a schema in SQL?
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What's the difference between COUNT(*) and COUNT(column)?
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What are window functions used for?
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What does ACID's 'Isolation' mean?
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What's the difference between LEFT and RIGHT JOIN?
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What does a foreign key constraint do?
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When is a covering index useful?
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What's the purpose of GROUP BY?
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