这种查询语句的结构主要指的是从emp表中查询出所需要的指令,但是这个是属于SQL语句的范畴。 而简单查询指的是查询出一张表中的所有的数据,简单查询的语法如下: SELECT [DISTINCT] * | 字段 [别名] [,字段 [别名]] FROM 表名称 [别名]; 1. 2. 范例:查询dept表的全部记录 SELECT * FROM dept; 范例:查询...
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