Q. The comma operator can also be used to join tables.

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Q. The left and right joins are also known as __________

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Q. What is joining a table to itself called?

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Q. In which join all the rows from the left table appear in the output irrespective of the content of the other table?

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Q. The join in which all the rows from the right table appear in the output irrespective of the content of the other table is ___________

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Q. The facility that allows nesting one select statement into another is called __________

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Q. Which subquery returns a single value?

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Q. Usage of aggregates in WHERE clause is allowed.

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Q. Which operators are used when a subquery returns multiple rows to be evaluated in comparison to the outer query?

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Q. The ALL subquery performs which operation?

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Q. Which of these operators perform similar operations like ALL and ANY?

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Q. Which operators test whether a subquery returns any rows?

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Q. An uncorrelated subquery does not contain any reference to the values from the outer query.

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Q. Which subquery cannot be executed by itself as a separate statement?

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Q. Which of these operators does not perform relative-value comparisons?

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Q. To combine multiple retrievals, we write several SELECT statements and put the keyword between them. What is the keyword?

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Q. Which keyword used with UNION does not retain duplicate rows?

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Q. Which keyword used with UNION retains duplicate rows?

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Q. The UNION ALL has a higher precedence than UNION DISTINCT.

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Q. Which clause is used to sort a UNION result as a whole?

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