毕业狗急哭了例:表1:
id year 债务融资成本 企业规模 总资产回报率 净资产收益率 资产周转率 审计意见类型
2 2013 0.025533301 26.17905936 0.038232544 0.121469709 0.548470009 0
2 2014 0.067263917 26.17905936 0.038232544 0.121469709 0.548470009 0
2 2015 0.033876388 26.17905936 0.038232544 0.121469709 0.548470009 0
2 2016 0.02763945 26.17905936 0.038232544 0.121469709 0.548470009 0
2 2017 0.043459599 26.17905936 0.038232544 0.121469709 0.548470009 0
2 2018 0.046844976 26.17905936 0.038232544 0.121469709 0.548470009 0
2 2019 0.043851913 26.17905936 0.038232544 0.121469709 0.548470009 0
4 2013 0 19.91550168 0.013001458 0.040114024 0.213550037 0
4 2015 0.00582 19.91550168 0.015379821 0.041992164 0.270165735 0
4 2016 #DIV/0! 19.91550168 0.089079235 0.222875198 0.645211547 0
4 2017 #DIV/0! 19.91550168 0.013215635 0.03200704 0.31087733 1
表2:
id year REM1 AbsREM1 REM2 AbsREM2
2 2013 0.049812295 0.049812295 0.017014325 0.017014325
2 2014 -0.028921895 0.028921895 -0.264690608 0.264690608
2 2015 -0.088718489 0.088718489 -0.09326306 0.09326306
2 2016 0.029674103 0.029674103 0.0288068 0.0288068
2 2017 0.172014996 0.172014996 -0.011867492 0.011867492
2 2018 0.021516979 0.021516979 0.041977823 0.041977823
2 2019 -0.015972955 0.015972955 -0.030539813 0.030539813
4 2013 0.059966344 0.059966344 0.097901702 0.097901702
4 2014 0.401047319 0.401047319 0.592121303 0.592121303
4 2015 0.16015929 0.16015929 0.3852548 0.3852548
4 2016 -0.173971146 0.173971146 -0.619480014 0.619480014
4 2017 0.106153049 0.106153049 -0.224842995 0.224842995
如何把两张表放到同一张表里,但是,没有重合部分,则合并表中那一项为0啊??


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