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Oracle认证考试

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Which two are true about aggregate functions?()

  • A、You can use aggregate functions in any clause of a SELECT statement.
  • B、You can use aggregate functions only in the column list of the SELECT clause and in the WHERE clause of a SELECT statement.
  • C、You can mix single row columns with aggregate functions in the column list of a SELECT statement by grouping on the single row columns.
  • D、You can pass column names, expressions, constants, or functions as parameters to an aggregate function.
  • E、You can use aggregate functions on a table, only by grouping the whole table as one single group.
  • F、You cannot group the rows of a table by more than one column while using aggregate functions.
正确答案:C,D
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