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Database Management Systems | Alkhabay Bakgeldi
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If the AVG() function is executed on a column containing NULL values, how are the NULL values treated?
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What type of subquery returns a single row and more than one column value?
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Which set operator combines result sets of two or more SELECT statements and removes all duplicate rows?
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What is the simplest syntax used to create a PostgreSQL view?
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The EXISTS operator is evaluated to determine what?
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Which comparison operator is explicitly NOT allowed to be used with a subquery, although it can be used within a subquery?
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The SUM() function returns the sum of values or distinct values, which is specified using which keyword in the syntax?
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Which types of columns are NOT permitted for use in Set operators?
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The MAX() aggregate function can be used in which clauses of an SQL statement?
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The EXCEPT operator returns rows from which query that are not in the output of the other query?
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