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csdn
17 年
sum(decode(,'',))怎么对付两个字段?
可以算出Shape为'A1'的money。 现在要同时按照“形状 Shape,颜色 colour”统计汇总,怎么写SQL语句?最好只用查询! 我可不想把每种Shape,colour都写出来,而且希望能够不统计不存在的Shape和colour! Oracle DECODE函数的用法详解?转: DECODE()函数用法 作用:将输入数值 ...
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