column name was specified multiple times

调试SQL时出现以下提示:spa Msg 8156, Level 16, State 1, Line 2调试 The column 'customer' was specified multiple times for 'MM'.ip 说明:customer 是父,子表均有的字段ci MM为父表的简称定义im 解决方案: 从新定义父表的customer字段便可。解决方案
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