SUM(Amount) 不同的值，然后是行的总和 - SQL Server 2017 (14.0.3045.24)

Question

SUM(Amount) 不同的值，然后是行的总和 - SQL Server 2017 (14.0.3045.24)

Dan*_*eih 5 sql-server sum sql-server-2017

我正在使用以下查询来获取过滤器中所有行的字段数量的总和：

SELECT SUM(Amount)
FROM dbo.[CompanyName$Detailed Cust_ Ledg_ Entry]
WHERE [Customer No_] = 'XYZ'

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结果是

这个结果不等于行的总和

SELECT [Customer No_], Amount
FROM dbo.[CompanyName$Detailed Cust_ Ledg_ Entry]
WHERE [Customer No_] = 'XYZ'

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行的结果是：

计算行的等位基因数量时，结果为：-29,59 而不是 -59,18

有人可以解释这种行为吗？

SP_Helpindex 输出：

查询计划：

XML 查询计划

<?xml version="1.0" encoding="utf-16"?>
<ShowPlanXML xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" Version="1.481" Build="14.0.3045.24" xmlns="http://schemas.microsoft.com/sqlserver/2004/07/showplan">
  <BatchSequence>
    <Batch>
      <Statements>
        <StmtSimple StatementCompId="1" StatementEstRows="9.00002" StatementId="2" StatementOptmLevel="FULL" StatementOptmEarlyAbortReason="GoodEnoughPlanFound" CardinalityEstimationModelVersion="140" StatementSubTreeCost="0.029753" StatementText="SELECT 'XYZ' [Customer No_],[Amount] FROM [dbo].[CompanyName$Detailed Cust_ Ledg_ Entry] WHERE [Customer No_]=@1" StatementType="SELECT" QueryHash="0x97A8CCC9F15EC998" QueryPlanHash="0x7502550BCACA55B0" RetrievedFromCache="false" SecurityPolicyApplied="false">
          <StatementSetOptions ANSI_NULLS="true" ANSI_PADDING="true" ANSI_WARNINGS="true" ARITHABORT="true" CONCAT_NULL_YIELDS_NULL="true" NUMERIC_ROUNDABORT="false" QUOTED_IDENTIFIER="true" />
          <QueryPlan DegreeOfParallelism="1" MemoryGrant="1024" CachedPlanSize="32" CompileTime="3" CompileCPU="3" CompileMemory="552">
            <MemoryGrantInfo SerialRequiredMemory="512" SerialDesiredMemory="544" RequiredMemory="512" DesiredMemory="544" RequestedMemory="1024" GrantWaitTime="0" GrantedMemory="1024" MaxUsedMemory="0" MaxQueryMemory="8063784" />
            <OptimizerHardwareDependentProperties EstimatedAvailableMemoryGrant="1363148" EstimatedPagesCached="340787" EstimatedAvailableDegreeOfParallelism="2" MaxCompileMemory="34964752" />
            <OptimizerStatsUsage>
              <StatisticsInfo Database="[DBName]" Schema="[dbo]" Table="[CompanyName$Detailed Cust_ Ledg_ Entry]" Statistics="[$8]" ModificationCount="25" SamplingPercent="100" LastUpdate="2020-02-10T06:55:52.34" />
              <StatisticsInfo Database="[DBName]" Schema="[dbo]" Table="[CompanyName$Detailed Cust_ Ledg_ Entry]" Statistics="[$1]" ModificationCount="18" SamplingPercent="100" LastUpdate="2020-02-10T06:55:47.85" />
              <StatisticsInfo Database="[DBName]" Schema="[dbo]" Table="[CompanyName$Detailed Cust_ Ledg_ Entry]" Statistics="[$11]" ModificationCount="18" SamplingPercent="100" LastUpdate="2020-02-10T06:57:02.26" />
              <StatisticsInfo Database="[DBName]" Schema="[dbo]" Table="[CompanyName$Detailed Cust_ Ledg_ Entry]" Statistics="[$6]" ModificationCount="18" SamplingPercent="100" LastUpdate="2020-02-10T06:55:59.59" />
              <StatisticsInfo Database="[DBName]" Schema="[dbo]" Table="[CompanyName$Detailed Cust_ Ledg_ Entry]" Statistics="[$10]" ModificationCount="18" SamplingPercent="100" LastUpdate="2020-02-10T06:56:54.58" />
              <StatisticsInfo Database="[DBName]" Schema="[dbo]" Table="[CompanyName$Detailed Cust_ Ledg_ Entry]" Statistics="[$4]" ModificationCount="18" SamplingPercent="100" LastUpdate="2020-02-10T06:56:09.84" />
              <StatisticsInfo Database="[DBName]" Schema="[dbo]" Table="[CompanyName$Detailed Cust_ Ledg_ Entry]" Statistics="[$9]" ModificationCount="25" SamplingPercent="100" LastUpdate="2020-02-10T06:56:46.87" />
              <StatisticsInfo Database="[DBName]" Schema="[dbo]" Table="[CompanyName$Detailed Cust_ Ledg_ Entry]" Statistics="[$7]" ModificationCount="18" SamplingPercent="100" LastUpdate="2020-02-10T06:56:35.44" />
              <StatisticsInfo Database="[DBName]" Schema="[dbo]" Table="[CompanyName$Detailed Cust_ Ledg_ Entry]" Statistics="[$5]" ModificationCount="18" SamplingPercent="100" LastUpdate="2020-02-10T06:56:31.71" />
            </OptimizerStatsUsage>
            <TraceFlags IsCompileTime="true">
              <TraceFlag Value="3226" Scope="Global" />
              <TraceFlag Value="4199" Scope="Global" />
            </TraceFlags>
            <TraceFlags IsCompileTime="false">
              <TraceFlag Value="3226" Scope="Global" />
              <TraceFlag Value="4199" Scope="Global" />
            </TraceFlags>
            <QueryTimeStats CpuTime="1" ElapsedTime="1" />
            <RelOp AvgRowSize="29" EstimateCPU="9.00002E-07" EstimateIO="0" EstimateRebinds="0" EstimateRewinds="0" EstimatedExecutionMode="Row" EstimateRows="9.00002" LogicalOp="Compute Scalar" NodeId="0" Parallel="false" PhysicalOp="Compute Scalar" EstimatedTotalSubtreeCost="0.029753">
              <OutputList>
                <ColumnReference Database="[DBName]" Schema="[dbo]" Table="[CompanyName$Detailed Cust_ Ledg_ Entry]" Column="Amount" />
                <ColumnReference Column="Expr1002" />
              </OutputList>
              <ComputeScalar>
                <DefinedValues>
                  <DefinedValue>
                    <ColumnReference Column="Expr1002" />
                    <ScalarOperator ScalarString="'XYZ'">
                      <Const ConstValue="'XYZ'" />
                    </ScalarOperator>
                  </DefinedValue>
                </DefinedValues>
                <RelOp AvgRowSize="24" EstimateCPU="3.76201E-05" EstimateIO="0" EstimateRebinds="0" EstimateRewinds="0" EstimatedExecutionMode="Row" EstimateRows="9.00002" LogicalOp="Inner Join" NodeId="1" Parallel="false" PhysicalOp="Nested Loops" EstimatedTotalSubtreeCost="0.0297521">
                  <OutputList>
                    <ColumnReference Database="[DBName]" Schema="[dbo]" Table="[CompanyName$Detailed Cust_ Ledg_ Entry]" Column="Amount" />
                  </OutputList>
                  <MemoryFractions Input="0" Output="1" />
                  <RunTimeInformation>
                    <RunTimeCountersPerThread Thread="0" ActualRows="12" Batches="0" ActualEndOfScans="1" ActualExecutions="1" ActualExecutionMode="Row" ActualElapsedms="0" ActualCPUms="0" />
                  </RunTimeInformation>
                  <NestedLoops Optimized="true">
                    <OuterReferences>
                      <ColumnReference Database="[DBName]" Schema="[dbo]" Table="[CompanyName$Detailed Cust_ Ledg_ Entry]" Column="Entry No_" />
                    </OuterReferences>
                    <RelOp AvgRowSize="11" EstimateCPU="0.0001669" EstimateIO="0.003125" EstimateRebinds="0" EstimateRewinds="0" EstimatedExecutionMode="Row" EstimateRows="9.00002" EstimatedRowsRead="9.00002" LogicalOp="Index Seek" NodeId="3" Parallel="false" PhysicalOp="Index Seek" EstimatedTotalSubtreeCost="0.0032919" TableCardinality="5304040">
                      <OutputList>
                        <ColumnReference Database="[DBName]" Schema="[dbo]" Table="[CompanyName$Detailed Cust_ Ledg_ Entry]" Column="Entry No_" />
                      </OutputList>
                      <RunTimeInformation>
                        <RunTimeCountersPerThread Thread="0" ActualRows="12" ActualRowsRead="12" Batches="0" ActualEndOfScans="1" ActualExecutions="1" ActualExecutionMode="Row" ActualElapsedms="0" ActualCPUms="0" ActualScans="1" ActualLogicalReads="4" ActualPhysicalReads="0" ActualReadAheads="0" ActualLobLogicalReads="0" ActualLobPhysicalReads="0" ActualLobReadAheads="0" />
                      </RunTimeInformation>
                      <IndexScan Ordered="true" ScanDirection="FORWARD" ForcedIndex="false" ForceSeek="false" ForceScan="false" NoExpandHint="false" Storage="RowStore">
                        <DefinedValues>
                          <DefinedValue>
                            <ColumnReference Database="[DBName]" Schema="[dbo]" Table="[CompanyName$Detailed Cust_ Ledg_ Entry]" Column="Entry No_" />
                          </DefinedValue>
                        </DefinedValues>
                        <Object Database="[DBName]" Schema="[dbo]" Table="[CompanyName$Detailed Cust_ Ledg_ Entry]" Index="[$5]" IndexKind="NonClustered" Storage="RowStore" />
                        <SeekPredicates>
                          <SeekPredicateNew>
                            <SeekKeys>
                              <Prefix ScanType="EQ">
                                <RangeColumns>
                                  <ColumnReference Database="[DBName]" Schema="[dbo]" Table="[CompanyName$Detailed Cust_ Ledg_ Entry]" Column="Customer No_" />
                                </RangeColumns>
                                <RangeExpressions>
                                  <ScalarOperator ScalarString="N'XYZ'">
                                    <Const ConstValue="N'XYZ'" />
                                  </ScalarOperator>
                                </RangeExpressions>
                              </Prefix>
                            </SeekKeys>
                          </SeekPredicateNew>
                        </SeekPredicates>
                      </IndexScan>
                    </RelOp>
                    <RelOp AvgRowSize="24" EstimateCPU="0.0001581" EstimateIO="0.003125" EstimateRebinds="8.00002" EstimateRewinds="0" EstimatedExecutionMode="Row" EstimateRows="1" LogicalOp="Clustered Index Seek" NodeId="5" Parallel="false" PhysicalOp="Clustered Index Seek" EstimatedTotalSubtreeCost="0.0264226" TableCardinality="5304040">
                      <OutputList>
                        <ColumnReference Database="[DBName]" Schema="[dbo]" Table="[CompanyName$Detailed Cust_ Ledg_ Entry]" Column="Amount" />
                      </OutputList>
                      <RunTimeInformation>
                        <RunTimeCountersPerThread Thread="0" ActualRows="12" ActualRowsRead="12" Batches="0" ActualEndOfScans="0" ActualExecutions="12" ActualExecutionMode="Row" ActualElapsedms="0" ActualCPUms="0" ActualScans="0" ActualLogicalReads="36" ActualPhysicalReads="0" ActualReadAheads="0" ActualLobLogicalReads="0" ActualLobPhysicalReads="0" ActualLobReadAheads="0" />
                      </RunTimeInformation>
                      <IndexScan Lookup="true" Ordered="true" ScanDirection="FORWARD" ForcedIndex="false" ForceSeek="false" ForceScan="false" NoExpandHint="false" Storage="RowStore">
                        <DefinedValues>
                          <DefinedValue>
                            <ColumnReference Database="[DBName]" Schema="[dbo]" Table="[CompanyName$Detailed Cust_ Ledg_ Entry]" Column="Amount" />
                          </DefinedValue>
                        </DefinedValues>
                        <Object Database="[DBName]" Schema="[dbo]" Table="[CompanyName$Detailed Cust_ Ledg_ Entry]" Index="[CompanyName$Detailed Cust_ Ledg_ Entry$0]" TableReferenceId="-1" IndexKind="Clustered" Storage="RowStore" />
                        <SeekPredicates>
                          <SeekPredicateNew>
                            <SeekKeys>
                              <Prefix ScanType="EQ">
                                <RangeColumns>
                                  <ColumnReference Database="[DBName]" Schema="[dbo]" Table="[CompanyName$Detailed Cust_ Ledg_ Entry]" Column="Entry No_" />
                                </RangeColumns>
                                <RangeExpressions>
                                  <ScalarOperator ScalarString="[DBName].[dbo].[CompanyName$Detailed Cust_ Ledg_ Entry].[Entry No_]">
                                    <Identifier>
                                      <ColumnReference Database="[DBName]" Schema="[dbo]" Table="[CompanyName$Detailed Cust_ Ledg_ Entry]" Column="Entry No_" />
                                    </Identifier>
                                  </ScalarOperator>
                                </RangeExpressions>
                              </Prefix>
                            </SeekKeys>
                          </SeekPredicateNew>
                        </SeekPredicates>
                      </IndexScan>
                    </RelOp>
                  </NestedLoops>
                </RelOp>
              </ComputeScalar>
            </RelOp>
            <ParameterList>
              <ColumnReference Column="@1" ParameterDataType="varchar(8000)" ParameterCompiledValue="'XYZ'" ParameterRuntimeValue="'XYZ'" />
            </ParameterList>
          </QueryPlan>
        </StmtSimple>
      </Statements>
    </Batch>
  </BatchSequence>
</ShowPlanXML>

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查询计划（SUM）： https : //pastebin.com/T5xqxVg8

查看定义

CREATE VIEW [dbo].[CompanyName$Detailed Cust_ Ledg_ Entry$VSIFT$5] 
WITH SCHEMABINDING 
AS 
SELECT "Customer No_","Currency Code","Initial Entry Global Dim_ 1","Initial Entry Global Dim_ 2","Initial Entry Due Date","Posting Date",COUNT_BIG(*) AS "$Cnt",SUM("Amount") AS "SUM$Amount",SUM("Amount (LCY)") AS "SUM$Amount (LCY)" 
FROM dbo."CompanyName$Detailed Cust_ Ledg_ Entry" 
GROUP BY "Customer No_","Currency Code","Initial Entry Global Dim_ 1","Initial Entry Global Dim_ 2","Initial Entry Due Date","Posting Date"

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Answer 1

Dan*_*eih 2

感谢@JoshDarnell 和@TonyHinkle。删除所有连接的视图并使用正确的索引重新创建它们后，显示了正确的数量。

对于 Dynamics NAV 2017 详细客户分类账条目表，存在三个视图WITH SCHEMABINDING：

导出视图和索引的 CREATE QUERY（！）以便重新创建它们。

索引的创建可能需要几秒钟。

之后，SUM和线的数量相等。

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