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Oracle认证考试

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In which four clauses can a subquery be used? ()

  • A、in the INTO clause of an INSERT statement
  • B、in the FROM clause of a SELECT statement
  • C、in the GROUP BY clause of a SELECT statement
  • D、in the WHERE clause of a SELECT statement
  • E、in the SET clause of an UPDATE statement
  • F、in the VALUES clause of an INSERT statement
正确答案:B,D,E,F
答案解析:
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