column name was specified multiple times

調試SQL時出現以下提示:spa Msg 8156, Level 16, State 1, Line 2調試 The column 'customer' was specified multiple times for 'MM'.ip 說明:customer 是父,子表均有的字段ci MM爲父表的簡稱定義im 解決方案: 從新定義父表的customer字段便可。解決方案
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