A340-600飞机C1/C2舱氧气面罩分布:除了()两排为3+4+3,其余排数氧气面罩分布都为3+3+3。
Given that tables T1 and T2 contain the following rows:
Table T1: C1 C2 1 4 1 3 1 2
Table T2: C1 C2 1 1 1 2 1 3
Which of the following queries will return only those rows that exist in both T1 and T2?()
Given that tables T1 and T2 contain the following rows: Table T1:
C1 C2
5 4 5 2 5 5
Table T2: C1 C2 5 1 5 2 5 3
Which of the following queries will return only those rows that exist in T1 and not in T2?()
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