Which query operators in sql is used for pattern matching?

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What are user defined functions?

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What is an index? What are the types of indexes? How many clustered indexes can be created on a table?

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how can i create a user defined datatype

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Which one of the following join types will always create a Cartesian Product? 1. CROSS JOIN 2. LEFT OUTER JOIN 3. RIGHT OUTER JOIN 4. FULL OUTER JOIN 5. INNER JOIN

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How does join work in sql?

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table having two columns - entity,zone enity zone pen east pen west pen north pen south pen east pencil east pencil east pencil west I want the output as : entity east west north south pen 2 1 1 1 pencil 2 1 0 0

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What is the difference between function and procedure in pl/sql?

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What is difference between group by and partition by?

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What is ON DELETE CASCADE?

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What is database migration?

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Is the primary key an index?

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