Examine the structure of the orders table:
You want to find the total value of all the orders for each year and issue the following
command:
Which statement is true regarding the outcome?
A.
It executes successfully and gives the correct output.
B.
It gives an error because the TO_CHAR function is not valid.
C.
It executes successfully but does not give the correct output.
D.
It gives an error because the data type conversion in the SELECT list does not match the
data type conversion in the GROUP BY clause.
D
D
GROUP BY clause must contain only aggregates or grouping columns.
In other words, expressions in the GROUP BY clause can contain any columns of the tables in the FROM clause, regardless of whether the columns appear in the SELECT list. However, when a SELECT clause contains one or more aggregate functions, any column that is not included in a group function must be part of the GROUP BY clause.