Mysql 多表查询结果增长序列号

先给出实现逻辑：sql SELECT (@i:=@i+1) as 序号,goods.* from goods LEFT JOIN stock_io ON goods.id = stock_io.goods_id LEFT JOIN (select @i := 0) as i ON 1=1; 网上找到一些查询单表结果增长序列号的实现方式：     select (@i:=@i+1) as

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