24
Answer (Choose 1 answer)
The table R(X,Y) currently has the following tuples (note there are duplicates). The relation S(A,B,C) has the following tuples:
(See picture)
Which is the result when we execute the following query:
SELECT * FROM R
UNION
SELECT * FROM S
A. The output has 15 rows
B. There is an error
C. The output has 16 rows
D. The output has 17 rows
XY
ABC
12
113
12
123
23
214
34
235
34
241
41
324
41
336
41
42
Ext
