摘要:
报错: 置foreign_key_checks变量为0 set @@session.foreign_key_checks=0 select @@session.foreign_key_checks; 比对两张表 show full columns from dept_emp; show full c 阅读全文
摘要:
判断list包含关系 a = [1, 2, 3, 4, 5] b = [3, 4, 5, 3] if [v for v in b if v not in a]: print('a doesn\'t comprise b') else: print('a comprise b') 采用列表解析式 a 阅读全文