MySQL数据库学习疑惑--自解

疑惑汇总与解析 1.mysql 表使用as取别名后原表名不能引用字段 SELECT t_class.name AS '学生姓名',t_class.sex AS '性别' FROM t_class AS c;mysql 报错以下：web *[SQL]SELECT t_class.name AS ‘学生姓名’,t_class.sex AS ‘性别’ FROM t_class AS c; [Err] 1

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