In Oracle12c,subqueries can be nested to a depth of 255 in a WHERE clause.
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Q19: A subquery can only be nested in
Q20: A single-row subquery can be nested in
Q21: A(n)single-row subquery can be nested in a(n)SELECT
Q22: The <ANY operator indicates that a value
Q23: The greater than operator,>,is a valid operator
Q25: A subquery must be enclosed in a
Q26: A subquery is required when the condition
Q27: In Oracle12c,a MERGE statement compares data between
Q28: A subquery is required when the condition
Q29: When the subquery is executed first and
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