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学生成绩表grade中有字段score(float),现在要

[不定项选择题]
学生成绩表grade中有字段score(float),现在要把所有在55分至60之间的分数提高5分,以下sql语句正确的是( )
  • Update grade set score=score+5
  • Update grade set score=score+5 where score>=55 or score <=60
  • Update grade set score=score+5 where score between 55 and 60
  • Update grade set score=score+5 where score >=55 and score <=60
哪里提示说是多选题了,我去

发表于 2022-04-14 16:34:47 回复(0)