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MySql 关于用户自定义变量的问题
1 select distinct Num as ConsecutiveNums from 2 ( select Num, 3 case 4 when @pre=Num then @count:=@c
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5
Python关于列表嵌套列表的索引
goodslist=[['Iphone', 5800], ['Mac Pro', 12000], ['Bike', 800], ['Alex Python', 89], ['Starbuck Latt
