column found in more than one table need a correlation name

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/31 20:32:10

多个表有相同的字段,这些表相关联时要明确指出该字段是哪个表的
如：表A,B都有相同的字段col ,如果A,B关联则必须指明col是属於A表的还是B表的
select A.col from A join b on .
如果写成select col from A join b on ...则会提示错误.

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