Mysql 多表查詢結果增長序列號

先給出實現邏輯：sql SELECT (@i:=@i+1) as 序號,goods.* from goods LEFT JOIN stock_io ON goods.id = stock_io.goods_id LEFT JOIN (select @i := 0) as i ON 1=1; 網上找到一些查詢單表結果增長序列號的實現方式：     select (@i:=@i+1) as

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