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def foo(): '''找到a开头的元素、组成新的列表''' src = ['abc','sac','des','yhg','acc'] new_list=[] for i in src: if i.startswith('a'): new_list.append(i) print(new_li 阅读全文
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第一题:select SC1.S# from SC SC1 JOIN SC SC2 ON SC1.S#=SC2.S# WHERE SC1.C#='001' AND SC2.C#='002' AND SC1.score>SC2.score; 第二题:select S#,AVG(score) as '平 阅读全文
摘要:
第一题: select score from student where course = '语文' and name = '张三'; 第二题: update student set score = 100 where course = '数学' and name = '李四'; 第三题: inse 阅读全文