當我下指令
select years, casecnt
from tablename
where CompanyName = 'A公司'
and Years between 2015 and 2019
結果是
years | casecnt
2018 | 3
2016 | 4
2015 | 7
但我希望能顯示結果如下
years | casecnt
2019 | 0
2018 | 3
2017 | 0
2016 | 4
2015 | 7
2019-03-08
SQL Left join...on..
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