多选题Which two are true about aggregate functions?（）AYou can use aggregate functions in any clause of a SELECT statement.BYou can use aggregate functions only in the column list of the select clause and in the WHERE clause of a SELECT statement.CYou can mix single row columns with aggregate functions in the column list of a SELECT statement by grouping on the single row columns.DYou can pass column names, expressions, constants, or functions as parameter to an aggregate function.EYou can use aggregate functions on a table, only by grouping the whole table as one single group.FYou cannot group the rows of a table by more than one column while using aggregate functions.
多选题
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 parameter 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.
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