Sql HY000视图的SELECT在FROM子句中包含子查询

我有一个sql请求，它在phpmyadmin中工作，但当我尝试进行Viev时，我得到错误：

HY000视图的SELECT在FROM子句中包含子查询 如何避免在FROM子句中使用子查询？以下是sql：

Select tlb_all.BarCode As BarCode,
  Sum(tlb_all.TotalIncomes) As TotalIncomes,
  Sum(tlb_all.TotalOutcomes) As TotalOutcomes,
  Sum(tlb_all.TotalAdjustments) As TotalAdjustments,
  
  Sum(tlb_all.TotalIncomes - tlb_all.TotalOutcomes + tlb_all.TotalAdjustments)
  As Leftover
From (Select tlb1.BarCode As BarCode, Sum(IfNull(tlb1.Quantity,
      0)) As TotalIncomes, Sum(0) As TotalOutcomes, Sum(0) As TotalAdjustments
    From stock_incomes tlb1
    Group By tlb1.BarCode
    UNION
    Select tlb2.BarCode As BarCode, Sum(0) As TotalIncomes,
      Sum(IfNull(tlb2.Quantity, 0)) As TotalOutcomes, Sum(0) As
      TotalAdjustments
    From stock_outcomes tlb2
    Group By tlb2.BarCode
    UNION
    Select tlb3.BarCode As BarCode, Sum(0) As TotalIncomes,
      Sum(0) As TotalOutcomes, Sum(IfNull(tlb3.Adjustment,
      0)) As TotalAdjustments
    From stock_adjustments tlb3
    Group By tlb3.BarCode
    UNION
    Select tlb4.BarCode As BarCode, Sum(0) As TotalIncomes,
      Sum(0) As TotalOutcomes, Sum(0) As TotalAdjustments
    From stock_outcomes tlb4

    Group By tlb4.BarCode) As tlb_all
Group By tlb_all.BarCode
Having IsNull(tlb_all.BarCode) = FALSE And Leftover <> 0
Order By tlb_all.BarCode

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如果您有一个包含所有可能代码的表，则可以执行如下操作：

select bc.BarCode,
       (Select Sum(si.Quantity) From stock_incomes si where si.BarCode = bc.BarCode
       ) as TotalIncomes,
       . . .
from BarCodes bc

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也就是说，将子查询移动到允许这些查询的select子句。

似乎可以使用with rollup或group by grouping集合来完成。语法取决于RDBMS。我猜这是mysql，但你能确认吗？是的。MySQL不支持from子句中的子查询。它在文档中：。为此，可以为内部子查询创建一个视图，然后为外部查询创建另一个视图。