"select a.*,b.* from tb_Card as a join tb_Module as b on a.ModuleID=b.Modulejoin on 语句语法
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"selecta.*,b.*fromtb_Cardasajointb_Moduleasbona.ModuleID=b.Modulejoinon语句语法"selecta.*,b.*fromtb_Card
"select a.*,b.* from tb_Card as a join tb_Module as b on a.ModuleID=b.Modulejoin on 语句语法
"select a.*,b.* from tb_Card as a join tb_Module as b on a.ModuleID=b.Module
join on 语句语法
"select a.*,b.* from tb_Card as a join tb_Module as b on a.ModuleID=b.Modulejoin on 语句语法
查询 tb_Card 和 tb_Module 表中的数据,条件为card表的ModuleID等于module表中的Module
join 默认就是INNER JOIN 内连接查询,只有满足了a.ModuleID=b.Module的数据才会被查出来
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