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The ALL subquery performs the operation _____________

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The ALL subquery performs the operation _____________

(a) row

(b) column

(c) table

(d) database

I got this question in semester exam.

This intriguing question comes from Managing MySQL User Accounts topic in portion General MySQL Administration of MySQL

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The correct option is (b) column

For explanation I would say: The operators ‘ALL’ and ‘ANY’ are used to perform operations on columns. They are used in conjunction with a comparison operator in order to test the result of a column subquery.

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