• 2022-06-15
    下列语句用来删除表对象或表数据,其中不正确的语句是()。
    A: TRUNCATE TABLE book
    B: DELETE * FROM book
    C: DROP TABLE book
    D: DELETE FROM book
  • B

    内容

    • 0

      若要删除book表中所有数据,以下语句正确的是( )。 A: TRUNCATE TABLE book B: TRUNCATE book C: TRUNCATE FROM book D: TRUNCATE * TABLE book

    • 1

      ​下列语句用来删除数据表中指定记录,正确的语句是( )。‍ A: DELETE FROM book WHERE 单价>20 B: DELETE * FROM book C: DELETE FROM book HAVING 单价>20 D: DELETE FROM book

    • 2

      若要删除book表中所有数据,以下语句错误的是() A: Atruncate table book B: Bdelete * from book C: Cdrop table book D: Ddelete from book

    • 3

      SQL用来删除表的语句是()。 A: DELETE B: DROP TABLE C: TRUNCATE TABLE D: DELETE TABLE

    • 4

      删除test表中所有数据的语句为 A: drop table test; B: delete table test; C: delete from test; D: truncate test;