| stkcd | year | csrf |
2 | 2010 | 64.2 |
2 | 2011 | 84.56 |
2 | 2012 | 86.71 |
2 | 2013 | 83.73 |
2 | 2014 | 70.74 |
2 | 2015 | 90 |
2 | 2016 | 76.43 |
2 | 2017 | 42.03 |
2 | 2018 | 40.25 |
4 | 2010 | 13.5 |
4 | 2011 | 19.64 |
4 | 2012 | 19.68 |
4 | 2013 | 19.38 |
4 | 2014 | 17.99 |
4 | 2015 | 18.52 |
4 | 2016 | 20.66 |
4 | 2017 | 20.48 |
4 | 2018 | 7.92 |
7 | 2011 | 15.41 |
7 | 2012 | 9.43 |
7 | 2013 | 15.22 |
7 | 2014 | -8.4 |
7 | 2015 | 7.25 |
7 | 2016 | 9.27 |
7 | 2017 | 20.84 |
7 | 2018 | 0.85 |
| stkcd | year | fraudtype | fraud_dummy |
4 | 2010 | 1 | 1 |
4 | 2013 | 3 | 1 |
4 | 2015 | 3 | 1 |
4 | 2017 | 3 | 1 |
4 | 2018 | 3 | 1 |
4 | 2019 | 3 | 1 |
7 | 2014 | 2 | 1 |
7 | 2015 | 3 | 1 |
7 | 2016 | 2 | 1 |
7 | 2019 | 2 | 1 |
黄老师说考虑表1和表2merge,但这只能得到违规公司的csr得分。我要的是整个上市公司的违规情况和csr得分,也即怎么处理两张表使得在保留表1主体的情况下能够使表2的内容替换和表1重复的部分?蓝色版主说的考虑用append的话,结果如下:
| stkcd | year | csrf | fraudtype | fraud_dummy |
2 | 2010 | 64.2 | ||
2 | 2011 | 84.56 | ||
2 | 2012 | 86.71 | ||
2 | 2013 | 83.73 | ||
2 | 2014 | 70.74 | ||
2 | 2015 | 90 | ||
2 | 2016 | 76.43 | ||
2 | 2017 | 42.03 | ||
2 | 2018 | 40.25 | ||
4 | 2010 | 13.5 | ||
4 | 2011 | 19.64 | ||
4 | 2012 | 19.68 | ||
4 | 2013 | 19.38 | ||
4 | 2014 | 17.99 | ||
4 | 2015 | 18.52 | ||
4 | 2016 | 20.66 | ||
4 | 2017 | 20.48 | ||
4 | 2018 | 7.92 | ||
7 | 2011 | 15.41 | ||
7 | 2012 | 9.43 | ||
7 | 2013 | 15.22 | ||
7 | 2014 | -8.4 | ||
7 | 2015 | 7.25 | ||
7 | 2016 | 9.27 | ||
7 | 2017 | 20.84 | ||
7 | 2018 | 0.85 | ||
4 | 2010 | 1 | 1 | |
4 | 2013 | 3 | 1 | |
4 | 2015 | 3 | 1 | |
4 | 2017 | 3 | 1 | |
4 | 2018 | 3 | 1 | |
4 | 2019 | 3 | 1 | |
7 | 2014 | 2 | 1 | |
7 | 2015 | 3 | 1 | |
7 | 2016 | 2 | 1 | |
7 | 2019 | 2 | 1 |
| stkcd | year | csrf | fraudtype | fraud_dummy |
2 | 2010 | 64.2 | ||
2 | 2011 | 84.56 | ||
2 | 2012 | 86.71 | ||
2 | 2013 | 83.73 | ||
2 | 2014 | 70.74 | ||
2 | 2015 | 90 | ||
2 | 2016 | 76.43 | ||
2 | 2017 | 42.03 | ||
2 | 2018 | 40.25 | ||
4 | 2010 | 13.5 | 1 | 1 |
4 | 2011 | 19.64 | ||
4 | 2012 | 19.68 | ||
4 | 2013 | 19.38 | 3 | 1 |
4 | 2014 | 17.99 | ||
4 | 2015 | 18.52 | 3 | 1 |
4 | 2016 | 20.66 | ||
4 | 2017 | 20.48 | 3 | 1 |
4 | 2018 | 7.92 | 3 | 1 |
7 | 2011 | 15.41 | ||
7 | 2012 | 9.43 | ||
7 | 2013 | 15.22 | ||
7 | 2014 | -8.4 | 2 | 1 |
7 | 2015 | 7.25 | 3 | 1 |
7 | 2016 | 9.27 | 2 | 1 |
7 | 2017 | 20.84 | ||
7 | 2018 | 0.85 |


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