Sql 如何在子查询的内部查询中使用上层查询表别名

此查询生成以下错误：

ORA-00904：“UPP”。“TPT\u CUO\u NAM”：无效标识符 90400000-%s：无效标识符

尝试连接“派生表”，而不是使用“select distinct”的复杂“相关子查询”。没有任何样本数据等。这有点像猜测，但看起来可能更像这样：

select upp.item_total,
   (select sum(iva.total_item_value_afs)
    from (select sum(item_value_afs) total_item_value_afs 
          from (select distinct inn.reg_no,inn.tpt_cuo_nam, inn.item_total, inn.item_value_afs
                from sigtasad.customs_import_data inn
                where inn.reg_no = upp.reg_no and inn.tpt_cuo_nam = upp.tpt_cuo_nam
               )
         ) iva
   ) total_item_value,
   sum(upp.code_tax_amount),
   upp.cmp_nam from SIGTASAD.CUSTOMS_IMPORT_DATA upp where upp.reg_no = '38699' and upp.company_tin = '9003247336' group by upp.reg_no, upp.tpt_cuo_nam, upp.cmp_nam, upp.item_total ;

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作为你的问题，这是做不到的。让我们试着解释一下你想做什么？因为你的代码不清楚。我的猜测是，您只希望对total_item_value的列使用group by 2列求和，但对其他列使用group by 4列求和。是吗？今天的提示：表格别名！没问题。干杯

SELECT
      upp.reg_no
    , upp.tpt_cuo_nam
    , upp.cmp_nam
    , upp.item_total
    , d.total_item_value
    , SUM(upp.code_tax_amount)
FROM sigtasad.customs_import_data upp
LEFT JOIN (
            SELECT
                  inn.reg_no
                , inn.tpt_cuo_nam
                , SUM(iva.total_item_value_afs) total_item_value
            FROM sigtasad.customs_import_data inn
            GROUP BY
                  inn.reg_no
                , inn.tpt_cuo_nam
            ) d ON upp.reg_no = d.reg_no
                  AND upp.tpt_cuo_nam = d.tpt_cuo_nam
WHERE upp.reg_no = '38699'
AND upp.company_tin = '9003247336'
GROUP BY
      upp.reg_no
    , upp.tpt_cuo_nam
    , upp.cmp_nam
    , upp.item_total
    , d.total_item_value
;