Given the following two tables: TAB1 C1 C2 A 11 B 12 C 13 TAB2 CX CY A 21 C 22 D 23 The following results are desired: C1 C2 CX CY A 11 A 21 C 13 C 22 -- --D 23 Which of the following queries will yield the desired results?()
Given the following two tables: TAB1 C1 C2 1 Antarctica 2 Africa 3 Asia 4 Australia TAB2 CX CY 5 Europe 6 North America 7 South America Which of the following SQL statements will insert all rows found in table TAB2 into table TAB1?()
Which of the following statements allows USER1 to take away read access on the table ORG.TAB1 from USER2?()
你定义了一个对象类型myOBJ,要基于该类型来创建表tab1,语句为()。
OGR 100H TAB1:DB 0FFH,’C’ 则在101H单元存放的内容是