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提交 dddd8366 编写于 作者: H Hans Zeller
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Limit DPE stats to groups with unresolved partition selectors (#9988) 

DPE stats are computed when we have a dynamic partition selector that's
applied on another child of a join. The current code continues to use
DPE stats even for the common ancestor join and nodes above it, but
those nodes aren't affected by the partition selector.

Regular Memo groups pick the best expression among several to compute
stats, which makes row count estimates more reliable. We don't have
that luxury with DPE stats, therefore they are often less reliable.

By minimizing the places where we use DPE stats, we should overall get
more reliable row count estimates with DPE stats enabled.

The fix also ignores DPE stats with row counts greater than the group
stats. Partition selectors eliminate certain partitions, therefore
it is impossible for them to increase the row count.
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src/backend/gporca/data/dxl/minidump/DPE-with-unsupported-pred.mdp
浏览文件 @ dddd8366
......@@ -2010,7 +2010,7 @@
<dxl:Plan Id="0" SpaceSize="150">
<dxl:GatherMotion InputSegments="0,1,2" OutputSegments="-1">
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="1324604.464841" Rows="728.177778" Width="28"/>
<dxl:Cost StartupCost="0" TotalCost="1324669.231990" Rows="2560.000000" Width="28"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="0" Alias="a">
......@@ -2039,7 +2039,7 @@
<dxl:SortingColumnList/>
<dxl:HashJoin JoinType="Inner">
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="1324604.388858" Rows="728.177778" Width="28"/>
<dxl:Cost StartupCost="0" TotalCost="1324668.964863" Rows="2560.000000" Width="28"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="0" Alias="a">
......@@ -2068,40 +2068,13 @@
<dxl:JoinFilter/>
<dxl:HashCondList>
<dxl:Comparison ComparisonOperator="=" OperatorMdid="0.96.1.0">
<dxl:Ident ColId="10" ColName="d" TypeMdid="0.23.1.0"/>
<dxl:Ident ColId="1" ColName="b" TypeMdid="0.23.1.0"/>
<dxl:Ident ColId="10" ColName="d" TypeMdid="0.23.1.0"/>
</dxl:Comparison>
</dxl:HashCondList>
<dxl:TableScan>
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="431.062700" Rows="9000.000000" Width="8"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="10" Alias="d">
<dxl:Ident ColId="10" ColName="d" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
<dxl:ProjElem ColId="11" Alias="e">
<dxl:Ident ColId="11" ColName="e" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
</dxl:ProjList>
<dxl:Filter/>
<dxl:TableDescriptor Mdid="0.57371.1.0" TableName="bar">
<dxl:Columns>
<dxl:Column ColId="10" Attno="1" ColName="d" TypeMdid="0.23.1.0" ColWidth="4"/>
<dxl:Column ColId="11" Attno="2" ColName="e" TypeMdid="0.23.1.0" ColWidth="4"/>
<dxl:Column ColId="12" Attno="-1" ColName="ctid" TypeMdid="0.27.1.0" ColWidth="6"/>
<dxl:Column ColId="13" Attno="-3" ColName="xmin" TypeMdid="0.28.1.0" ColWidth="4"/>
<dxl:Column ColId="14" Attno="-4" ColName="cmin" TypeMdid="0.29.1.0" ColWidth="4"/>
<dxl:Column ColId="15" Attno="-5" ColName="xmax" TypeMdid="0.28.1.0" ColWidth="4"/>
<dxl:Column ColId="16" Attno="-6" ColName="cmax" TypeMdid="0.29.1.0" ColWidth="4"/>
<dxl:Column ColId="17" Attno="-7" ColName="tableoid" TypeMdid="0.26.1.0" ColWidth="4"/>
<dxl:Column ColId="18" Attno="-8" ColName="gp_segment_id" TypeMdid="0.23.1.0" ColWidth="4"/>
</dxl:Columns>
</dxl:TableDescriptor>
</dxl:TableScan>
<dxl:RedistributeMotion InputSegments="0,1,2" OutputSegments="0,1,2">
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="1324172.572304" Rows="809.086420" Width="20"/>
<dxl:Cost StartupCost="0" TotalCost="1324236.752760" Rows="2844.444444" Width="20"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="0" Alias="a">
......@@ -2129,7 +2102,7 @@
</dxl:HashExprList>
<dxl:NestedLoopJoin JoinType="Inner" IndexNestedLoopJoin="false" OuterRefAsParam="false">
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="1324172.555421" Rows="809.086420" Width="20"/>
<dxl:Cost StartupCost="0" TotalCost="1324236.693406" Rows="2844.444444" Width="20"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="0" Alias="a">
......@@ -2156,7 +2129,7 @@
<dxl:CoerceViaIO TypeMdid="0.23.1.0" CoercionForm="1" Location="0">
<dxl:FuncExpr FuncId="0.1773.1.0" FuncRetSet="false" TypeMdid="0.25.1.0">
<dxl:Ident ColId="19" ColName="f" TypeMdid="0.23.1.0"/>
<dxl:ConstValue TypeMdid="0.25.1.0" IsNull="false" Value="AAAABzk5OQ==" LintValue="724274224"/>
<dxl:ConstValue TypeMdid="0.25.1.0" Value="AAAABzk5OQ==" LintValue="724274224"/>
</dxl:FuncExpr>
</dxl:CoerceViaIO>
</dxl:Comparison>
......@@ -2165,7 +2138,7 @@
<dxl:CoerceViaIO TypeMdid="0.23.1.0" CoercionForm="1" Location="0">
<dxl:FuncExpr FuncId="0.1773.1.0" FuncRetSet="false" TypeMdid="0.25.1.0">
<dxl:Ident ColId="19" ColName="f" TypeMdid="0.23.1.0"/>
<dxl:ConstValue TypeMdid="0.25.1.0" IsNull="false" Value="AAAABzk5OQ==" LintValue="724274224"/>
<dxl:ConstValue TypeMdid="0.25.1.0" Value="AAAABzk5OQ==" LintValue="724274224"/>
</dxl:FuncExpr>
</dxl:CoerceViaIO>
</dxl:Comparison>
......@@ -2184,7 +2157,7 @@
</dxl:ProjElem>
</dxl:ProjList>
<dxl:PartEqFilters>
<dxl:ConstValue TypeMdid="0.16.1.0" IsNull="false" Value="true"/>
<dxl:ConstValue TypeMdid="0.16.1.0" Value="true"/>
</dxl:PartEqFilters>
<dxl:PartFilters>
<dxl:Or>
......@@ -2196,7 +2169,7 @@
<dxl:CoerceViaIO TypeMdid="0.23.1.0" CoercionForm="1" Location="0">
<dxl:FuncExpr FuncId="0.1773.1.0" FuncRetSet="false" TypeMdid="0.25.1.0">
<dxl:Ident ColId="19" ColName="f" TypeMdid="0.23.1.0"/>
<dxl:ConstValue TypeMdid="0.25.1.0" IsNull="false" Value="AAAABzk5OQ==" LintValue="724274224"/>
<dxl:ConstValue TypeMdid="0.25.1.0" Value="AAAABzk5OQ==" LintValue="724274224"/>
</dxl:FuncExpr>
</dxl:CoerceViaIO>
</dxl:Comparison>
......@@ -2207,7 +2180,7 @@
<dxl:CoerceViaIO TypeMdid="0.23.1.0" CoercionForm="1" Location="0">
<dxl:FuncExpr FuncId="0.1773.1.0" FuncRetSet="false" TypeMdid="0.25.1.0">
<dxl:Ident ColId="19" ColName="f" TypeMdid="0.23.1.0"/>
<dxl:ConstValue TypeMdid="0.25.1.0" IsNull="false" Value="AAAABzk5OQ==" LintValue="724274224"/>
<dxl:ConstValue TypeMdid="0.25.1.0" Value="AAAABzk5OQ==" LintValue="724274224"/>
</dxl:FuncExpr>
</dxl:CoerceViaIO>
</dxl:Comparison>
......@@ -2219,7 +2192,7 @@
<dxl:CoerceViaIO TypeMdid="0.23.1.0" CoercionForm="1" Location="0">
<dxl:FuncExpr FuncId="0.1773.1.0" FuncRetSet="false" TypeMdid="0.25.1.0">
<dxl:Ident ColId="19" ColName="f" TypeMdid="0.23.1.0"/>
<dxl:ConstValue TypeMdid="0.25.1.0" IsNull="false" Value="AAAABzk5OQ==" LintValue="724274224"/>
<dxl:ConstValue TypeMdid="0.25.1.0" Value="AAAABzk5OQ==" LintValue="724274224"/>
</dxl:FuncExpr>
</dxl:CoerceViaIO>
</dxl:Comparison>
......@@ -2230,7 +2203,7 @@
<dxl:CoerceViaIO TypeMdid="0.23.1.0" CoercionForm="1" Location="0">
<dxl:FuncExpr FuncId="0.1773.1.0" FuncRetSet="false" TypeMdid="0.25.1.0">
<dxl:Ident ColId="19" ColName="f" TypeMdid="0.23.1.0"/>
<dxl:ConstValue TypeMdid="0.25.1.0" IsNull="false" Value="AAAABzk5OQ==" LintValue="724274224"/>
<dxl:ConstValue TypeMdid="0.25.1.0" Value="AAAABzk5OQ==" LintValue="724274224"/>
</dxl:FuncExpr>
</dxl:CoerceViaIO>
</dxl:Comparison>
......@@ -2246,10 +2219,10 @@
</dxl:Or>
</dxl:PartFilters>
<dxl:ResidualFilter>
<dxl:ConstValue TypeMdid="0.16.1.0" IsNull="false" Value="true"/>
<dxl:ConstValue TypeMdid="0.16.1.0" Value="true"/>
</dxl:ResidualFilter>
<dxl:PropagationExpression>
<dxl:ConstValue TypeMdid="0.23.1.0" IsNull="false" Value="1"/>
<dxl:ConstValue TypeMdid="0.23.1.0" Value="1"/>
</dxl:PropagationExpression>
<dxl:PrintableFilter>
<dxl:And>
......@@ -2258,7 +2231,7 @@
<dxl:CoerceViaIO TypeMdid="0.23.1.0" CoercionForm="1" Location="0">
<dxl:FuncExpr FuncId="0.1773.1.0" FuncRetSet="false" TypeMdid="0.25.1.0">
<dxl:Ident ColId="19" ColName="f" TypeMdid="0.23.1.0"/>
<dxl:ConstValue TypeMdid="0.25.1.0" IsNull="false" Value="AAAABzk5OQ==" LintValue="724274224"/>
<dxl:ConstValue TypeMdid="0.25.1.0" Value="AAAABzk5OQ==" LintValue="724274224"/>
</dxl:FuncExpr>
</dxl:CoerceViaIO>
</dxl:Comparison>
......@@ -2267,7 +2240,7 @@
<dxl:CoerceViaIO TypeMdid="0.23.1.0" CoercionForm="1" Location="0">
<dxl:FuncExpr FuncId="0.1773.1.0" FuncRetSet="false" TypeMdid="0.25.1.0">
<dxl:Ident ColId="19" ColName="f" TypeMdid="0.23.1.0"/>
<dxl:ConstValue TypeMdid="0.25.1.0" IsNull="false" Value="AAAABzk5OQ==" LintValue="724274224"/>
<dxl:ConstValue TypeMdid="0.25.1.0" Value="AAAABzk5OQ==" LintValue="724274224"/>
</dxl:FuncExpr>
</dxl:CoerceViaIO>
</dxl:Comparison>
......@@ -2349,6 +2322,33 @@
</dxl:DynamicTableScan>
</dxl:NestedLoopJoin>
</dxl:RedistributeMotion>
<dxl:TableScan>
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="431.062700" Rows="9000.000000" Width="8"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="10" Alias="d">
<dxl:Ident ColId="10" ColName="d" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
<dxl:ProjElem ColId="11" Alias="e">
<dxl:Ident ColId="11" ColName="e" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
</dxl:ProjList>
<dxl:Filter/>
<dxl:TableDescriptor Mdid="0.57371.1.0" TableName="bar">
<dxl:Columns>
<dxl:Column ColId="10" Attno="1" ColName="d" TypeMdid="0.23.1.0" ColWidth="4"/>
<dxl:Column ColId="11" Attno="2" ColName="e" TypeMdid="0.23.1.0" ColWidth="4"/>
<dxl:Column ColId="12" Attno="-1" ColName="ctid" TypeMdid="0.27.1.0" ColWidth="6"/>
<dxl:Column ColId="13" Attno="-3" ColName="xmin" TypeMdid="0.28.1.0" ColWidth="4"/>
<dxl:Column ColId="14" Attno="-4" ColName="cmin" TypeMdid="0.29.1.0" ColWidth="4"/>
<dxl:Column ColId="15" Attno="-5" ColName="xmax" TypeMdid="0.28.1.0" ColWidth="4"/>
<dxl:Column ColId="16" Attno="-6" ColName="cmax" TypeMdid="0.29.1.0" ColWidth="4"/>
<dxl:Column ColId="17" Attno="-7" ColName="tableoid" TypeMdid="0.26.1.0" ColWidth="4"/>
<dxl:Column ColId="18" Attno="-8" ColName="gp_segment_id" TypeMdid="0.23.1.0" ColWidth="4"/>
</dxl:Columns>
</dxl:TableDescriptor>
</dxl:TableScan>
</dxl:HashJoin>
</dxl:GatherMotion>
</dxl:Plan>
......
src/backend/gporca/data/dxl/minidump/Join-Varchar-Equality.mdp
浏览文件 @ dddd8366
......@@ -3835,7 +3835,7 @@
<dxl:Plan Id="0" SpaceSize="384806">
<dxl:GatherMotion InputSegments="0,1" OutputSegments="-1">
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="30992053500.095406" Rows="19136.250000" Width="31"/>
<dxl:Cost StartupCost="0" TotalCost="654544318.346447" Rows="19136.250000" Width="31"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="27" Alias="year">
......@@ -3855,7 +3855,7 @@
<dxl:SortingColumnList/>
<dxl:Result>
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="30992053209.435371" Rows="19136.250000" Width="31"/>
<dxl:Cost StartupCost="0" TotalCost="654544027.686413" Rows="19136.250000" Width="31"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="27" Alias="year">
......@@ -3875,7 +3875,7 @@
<dxl:OneTimeFilter/>
<dxl:Aggregate AggregationStrategy="Hashed" StreamSafe="false">
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="30992053209.435371" Rows="19136.250000" Width="31"/>
<dxl:Cost StartupCost="0" TotalCost="654544027.686413" Rows="19136.250000" Width="31"/>
</dxl:Properties>
<dxl:GroupingColumns>
<dxl:GroupingColumn ColId="27"/>
......@@ -3905,7 +3905,7 @@
<dxl:Filter/>
<dxl:RedistributeMotion InputSegments="0,1" OutputSegments="0,1">
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="30992051358.348701" Rows="19136.250000" Width="34"/>
<dxl:Cost StartupCost="0" TotalCost="654542176.599743" Rows="19136.250000" Width="34"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="27" Alias="year">
......@@ -3942,7 +3942,7 @@
</dxl:HashExprList>
<dxl:Result>
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="30992051039.657051" Rows="19136.250000" Width="34"/>
<dxl:Cost StartupCost="0" TotalCost="654541857.908092" Rows="19136.250000" Width="34"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="27" Alias="year">
......@@ -3965,7 +3965,7 @@
<dxl:OneTimeFilter/>
<dxl:Aggregate AggregationStrategy="Hashed" StreamSafe="true">
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="30992051039.657051" Rows="19136.250000" Width="34"/>
<dxl:Cost StartupCost="0" TotalCost="654541857.908092" Rows="19136.250000" Width="34"/>
</dxl:Properties>
<dxl:GroupingColumns>
<dxl:GroupingColumn ColId="27"/>
......@@ -3995,7 +3995,7 @@
<dxl:Filter/>
<dxl:HashJoin JoinType="Inner">
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="344652958.259605" Rows="523048916394.908081" Width="30"/>
<dxl:Cost StartupCost="0" TotalCost="344652958.259605" Rows="5288759693.059181" Width="30"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="6" Alias="sales">
......
src/backend/gporca/data/dxl/minidump/PartTbl-AvoidRangePred-DPE.mdp
浏览文件 @ dddd8366
......@@ -828,7 +828,7 @@ FROM abuela JOIN bar ON a = c AND b BETWEEN d - 1 AND d + 4
<dxl:Plan Id="0" SpaceSize="746">
<dxl:GatherMotion InputSegments="0,1,2" OutputSegments="-1">
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="1293.015628" Rows="1.000000" Width="4"/>
<dxl:Cost StartupCost="0" TotalCost="1293.015667" Rows="3.000000" Width="4"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="1" Alias="b">
......@@ -839,7 +839,7 @@ FROM abuela JOIN bar ON a = c AND b BETWEEN d - 1 AND d + 4
<dxl:SortingColumnList/>
<dxl:HashJoin JoinType="Inner">
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="1293.015613" Rows="1.000000" Width="4"/>
<dxl:Cost StartupCost="0" TotalCost="1293.015623" Rows="3.000000" Width="4"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="1" Alias="b">
......
src/backend/gporca/data/dxl/minidump/PartTbl-JoinOverGbAgg-2.mdp
浏览文件 @ dddd8366
......@@ -1232,7 +1232,7 @@
<dxl:Plan Id="0" SpaceSize="33">
<dxl:GatherMotion InputSegments="0,1" OutputSegments="-1">
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="9.048127" Rows="3.258390" Width="24"/>
<dxl:Cost StartupCost="0" TotalCost="10.193655" Rows="101.010101" Width="24"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="0" Alias="a">
......@@ -1255,7 +1255,7 @@
<dxl:SortingColumnList/>
<dxl:HashJoin JoinType="Inner">
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="8.009943" Rows="3.258390" Width="24"/>
<dxl:Cost StartupCost="0" TotalCost="8.009943" Rows="101.010101" Width="24"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="0" Alias="a">
......
src/backend/gporca/data/dxl/minidump/PartTbl-JoinOverUnion-1.mdp
浏览文件 @ dddd8366
......@@ -1287,7 +1287,7 @@ select * from (select * from p1 union all select * from p2) as p, tt where p.b=t
<dxl:Plan Id="0" SpaceSize="20">
<dxl:GatherMotion InputSegments="0,1" OutputSegments="-1">
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="1297.088987" Rows="18148.820327" Width="16"/>
<dxl:Cost StartupCost="0" TotalCost="1296.285494" Rows="10101.010101" Width="16"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="0" Alias="a">
......@@ -1307,7 +1307,7 @@ select * from (select * from p1 union all select * from p2) as p, tt where p.b=t
<dxl:SortingColumnList/>
<dxl:HashJoin JoinType="Inner">
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="1295.785176" Rows="18148.820327" Width="16"/>
<dxl:Cost StartupCost="0" TotalCost="1295.559837" Rows="10101.010101" Width="16"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="0" Alias="a">
......
src/backend/gporca/data/dxl/minidump/PartTbl-MultiWayJoinWithDPE-2.mdp
浏览文件 @ dddd8366
......@@ -1352,7 +1352,7 @@
<dxl:Plan Id="0" SpaceSize="1137">
<dxl:GatherMotion InputSegments="0,1" OutputSegments="-1">
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="2531098.435121" Rows="5111.442548" Width="246"/>
<dxl:Cost StartupCost="0" TotalCost="4005245.452411" Rows="12277684.984863" Width="246"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="0" Alias="ss_sold_date_sk">
......@@ -1513,7 +1513,7 @@
<dxl:SortingColumnList/>
<dxl:HashJoin JoinType="Inner">
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="2530483.463018" Rows="5111.442548" Width="246"/>
<dxl:Cost StartupCost="0" TotalCost="2530483.463018" Rows="12277684.984863" Width="246"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="0" Alias="ss_sold_date_sk">
......
src/backend/gporca/data/dxl/minidump/PartTbl-MultiWayJoinWithDPE.mdp
浏览文件 @ dddd8366
......@@ -3258,7 +3258,7 @@
<dxl:Plan Id="0" SpaceSize="47573">
<dxl:HashJoin JoinType="Inner">
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="1151165615.915166" Rows="134868946302.331726" Width="355"/>
<dxl:Cost StartupCost="0" TotalCost="988941274.944215" Rows="321694266.492042" Width="355"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="0" Alias="cs_sold_date_sk">
......@@ -3484,13 +3484,109 @@
</dxl:JoinFilter>
<dxl:HashCondList>
<dxl:Comparison ComparisonOperator="=" OperatorMdid="0.96.1.0">
<dxl:Ident ColId="15" ColName="cs_item_sk" TypeMdid="0.23.1.0"/>
<dxl:Ident ColId="42" ColName="inv_item_sk" TypeMdid="0.23.1.0"/>
<dxl:Ident ColId="15" ColName="cs_item_sk" TypeMdid="0.23.1.0"/>
</dxl:Comparison>
</dxl:HashCondList>
<dxl:GatherMotion InputSegments="0,1" OutputSegments="-1">
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="1019057414.977869" Rows="196201417.533617" Width="339"/>
<dxl:Cost StartupCost="0" TotalCost="366902.000000" Rows="11740800.000000" Width="16"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="41" Alias="inv_date_sk">
<dxl:Ident ColId="41" ColName="inv_date_sk" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
<dxl:ProjElem ColId="42" Alias="inv_item_sk">
<dxl:Ident ColId="42" ColName="inv_item_sk" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
<dxl:ProjElem ColId="43" Alias="inv_warehouse_sk">
<dxl:Ident ColId="43" ColName="inv_warehouse_sk" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
<dxl:ProjElem ColId="44" Alias="inv_quantity_on_hand">
<dxl:Ident ColId="44" ColName="inv_quantity_on_hand" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
</dxl:ProjList>
<dxl:Filter/>
<dxl:SortingColumnList/>
<dxl:Sequence>
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="91725.000000" Rows="11740800.000000" Width="16"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="41" Alias="inv_date_sk">
<dxl:Ident ColId="41" ColName="inv_date_sk" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
<dxl:ProjElem ColId="42" Alias="inv_item_sk">
<dxl:Ident ColId="42" ColName="inv_item_sk" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
<dxl:ProjElem ColId="43" Alias="inv_warehouse_sk">
<dxl:Ident ColId="43" ColName="inv_warehouse_sk" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
<dxl:ProjElem ColId="44" Alias="inv_quantity_on_hand">
<dxl:Ident ColId="44" ColName="inv_quantity_on_hand" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
</dxl:ProjList>
<dxl:PartitionSelector RelationMdid="0.810176.1.1" PartitionLevels="1" ScanId="2">
<dxl:Properties>
<dxl:Cost StartupCost="10" TotalCost="100" Rows="100" Width="4"/>
</dxl:Properties>
<dxl:ProjList/>
<dxl:PartEqFilters>
<dxl:ConstValue TypeMdid="0.16.1.0" Value="true"/>
</dxl:PartEqFilters>
<dxl:PartFilters>
<dxl:ConstValue TypeMdid="0.16.1.0" Value="true"/>
</dxl:PartFilters>
<dxl:ResidualFilter>
<dxl:ConstValue TypeMdid="0.16.1.0" Value="true"/>
</dxl:ResidualFilter>
<dxl:PropagationExpression>
<dxl:ConstValue TypeMdid="0.23.1.0" Value="2"/>
</dxl:PropagationExpression>
<dxl:PrintableFilter>
<dxl:ConstValue TypeMdid="0.16.1.0" Value="true"/>
</dxl:PrintableFilter>
</dxl:PartitionSelector>
<dxl:DynamicTableScan PartIndexId="2">
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="91725.000000" Rows="11740800.000000" Width="16"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="41" Alias="inv_date_sk">
<dxl:Ident ColId="41" ColName="inv_date_sk" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
<dxl:ProjElem ColId="42" Alias="inv_item_sk">
<dxl:Ident ColId="42" ColName="inv_item_sk" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
<dxl:ProjElem ColId="43" Alias="inv_warehouse_sk">
<dxl:Ident ColId="43" ColName="inv_warehouse_sk" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
<dxl:ProjElem ColId="44" Alias="inv_quantity_on_hand">
<dxl:Ident ColId="44" ColName="inv_quantity_on_hand" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
</dxl:ProjList>
<dxl:Filter/>
<dxl:TableDescriptor Mdid="0.810176.1.1" TableName="inventory">
<dxl:Columns>
<dxl:Column ColId="41" Attno="1" ColName="inv_date_sk" TypeMdid="0.23.1.0"/>
<dxl:Column ColId="42" Attno="2" ColName="inv_item_sk" TypeMdid="0.23.1.0"/>
<dxl:Column ColId="43" Attno="3" ColName="inv_warehouse_sk" TypeMdid="0.23.1.0"/>
<dxl:Column ColId="44" Attno="4" ColName="inv_quantity_on_hand" TypeMdid="0.23.1.0"/>
<dxl:Column ColId="45" Attno="-1" ColName="ctid" TypeMdid="0.27.1.0"/>
<dxl:Column ColId="46" Attno="-3" ColName="xmin" TypeMdid="0.28.1.0"/>
<dxl:Column ColId="47" Attno="-4" ColName="cmin" TypeMdid="0.29.1.0"/>
<dxl:Column ColId="48" Attno="-5" ColName="xmax" TypeMdid="0.28.1.0"/>
<dxl:Column ColId="49" Attno="-6" ColName="cmax" TypeMdid="0.29.1.0"/>
<dxl:Column ColId="50" Attno="-7" ColName="tableoid" TypeMdid="0.26.1.0"/>
<dxl:Column ColId="51" Attno="-8" ColName="gp_segment_id" TypeMdid="0.23.1.0"/>
</dxl:Columns>
</dxl:TableDescriptor>
</dxl:DynamicTableScan>
</dxl:Sequence>
</dxl:GatherMotion>
<dxl:GatherMotion InputSegments="0,1" OutputSegments="-1">
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="986658180.086433" Rows="467986.685065" Width="339"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="0" Alias="cs_sold_date_sk">
......@@ -3699,7 +3795,7 @@
<dxl:SortingColumnList/>
<dxl:HashJoin JoinType="Inner">
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="986580714.493544" Rows="196201417.533617" Width="339"/>
<dxl:Cost StartupCost="0" TotalCost="986580714.493544" Rows="467986.685065" Width="339"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="0" Alias="cs_sold_date_sk">
......@@ -4722,102 +4818,6 @@
</dxl:PartitionSelector>
</dxl:HashJoin>
</dxl:GatherMotion>
<dxl:GatherMotion InputSegments="0,1" OutputSegments="-1">
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="366902.000000" Rows="11740800.000000" Width="16"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="41" Alias="inv_date_sk">
<dxl:Ident ColId="41" ColName="inv_date_sk" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
<dxl:ProjElem ColId="42" Alias="inv_item_sk">
<dxl:Ident ColId="42" ColName="inv_item_sk" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
<dxl:ProjElem ColId="43" Alias="inv_warehouse_sk">
<dxl:Ident ColId="43" ColName="inv_warehouse_sk" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
<dxl:ProjElem ColId="44" Alias="inv_quantity_on_hand">
<dxl:Ident ColId="44" ColName="inv_quantity_on_hand" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
</dxl:ProjList>
<dxl:Filter/>
<dxl:SortingColumnList/>
<dxl:Sequence>
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="91725.000000" Rows="11740800.000000" Width="16"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="41" Alias="inv_date_sk">
<dxl:Ident ColId="41" ColName="inv_date_sk" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
<dxl:ProjElem ColId="42" Alias="inv_item_sk">
<dxl:Ident ColId="42" ColName="inv_item_sk" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
<dxl:ProjElem ColId="43" Alias="inv_warehouse_sk">
<dxl:Ident ColId="43" ColName="inv_warehouse_sk" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
<dxl:ProjElem ColId="44" Alias="inv_quantity_on_hand">
<dxl:Ident ColId="44" ColName="inv_quantity_on_hand" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
</dxl:ProjList>
<dxl:PartitionSelector RelationMdid="0.810176.1.1" PartitionLevels="1" ScanId="2">
<dxl:Properties>
<dxl:Cost StartupCost="10" TotalCost="100" Rows="100" Width="4"/>
</dxl:Properties>
<dxl:ProjList/>
<dxl:PartEqFilters>
<dxl:ConstValue TypeMdid="0.16.1.0" Value="true"/>
</dxl:PartEqFilters>
<dxl:PartFilters>
<dxl:ConstValue TypeMdid="0.16.1.0" Value="true"/>
</dxl:PartFilters>
<dxl:ResidualFilter>
<dxl:ConstValue TypeMdid="0.16.1.0" Value="true"/>
</dxl:ResidualFilter>
<dxl:PropagationExpression>
<dxl:ConstValue TypeMdid="0.23.1.0" Value="2"/>
</dxl:PropagationExpression>
<dxl:PrintableFilter>
<dxl:ConstValue TypeMdid="0.16.1.0" Value="true"/>
</dxl:PrintableFilter>
</dxl:PartitionSelector>
<dxl:DynamicTableScan PartIndexId="2">
<dxl:Properties>
<dxl:Cost StartupCost="0" TotalCost="91725.000000" Rows="11740800.000000" Width="16"/>
</dxl:Properties>
<dxl:ProjList>
<dxl:ProjElem ColId="41" Alias="inv_date_sk">
<dxl:Ident ColId="41" ColName="inv_date_sk" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
<dxl:ProjElem ColId="42" Alias="inv_item_sk">
<dxl:Ident ColId="42" ColName="inv_item_sk" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
<dxl:ProjElem ColId="43" Alias="inv_warehouse_sk">
<dxl:Ident ColId="43" ColName="inv_warehouse_sk" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
<dxl:ProjElem ColId="44" Alias="inv_quantity_on_hand">
<dxl:Ident ColId="44" ColName="inv_quantity_on_hand" TypeMdid="0.23.1.0"/>
</dxl:ProjElem>
</dxl:ProjList>
<dxl:Filter/>
<dxl:TableDescriptor Mdid="0.810176.1.1" TableName="inventory">
<dxl:Columns>
<dxl:Column ColId="41" Attno="1" ColName="inv_date_sk" TypeMdid="0.23.1.0"/>
<dxl:Column ColId="42" Attno="2" ColName="inv_item_sk" TypeMdid="0.23.1.0"/>
<dxl:Column ColId="43" Attno="3" ColName="inv_warehouse_sk" TypeMdid="0.23.1.0"/>
<dxl:Column ColId="44" Attno="4" ColName="inv_quantity_on_hand" TypeMdid="0.23.1.0"/>
<dxl:Column ColId="45" Attno="-1" ColName="ctid" TypeMdid="0.27.1.0"/>
<dxl:Column ColId="46" Attno="-3" ColName="xmin" TypeMdid="0.28.1.0"/>
<dxl:Column ColId="47" Attno="-4" ColName="cmin" TypeMdid="0.29.1.0"/>
<dxl:Column ColId="48" Attno="-5" ColName="xmax" TypeMdid="0.28.1.0"/>
<dxl:Column ColId="49" Attno="-6" ColName="cmax" TypeMdid="0.29.1.0"/>
<dxl:Column ColId="50" Attno="-7" ColName="tableoid" TypeMdid="0.26.1.0"/>
<dxl:Column ColId="51" Attno="-8" ColName="gp_segment_id" TypeMdid="0.23.1.0"/>
</dxl:Columns>
</dxl:TableDescriptor>
</dxl:DynamicTableScan>
</dxl:Sequence>
</dxl:GatherMotion>
</dxl:HashJoin>
</dxl:Plan>
</dxl:Thread>
......
src/backend/gporca/libgpopt/src/base/CCostContext.cpp
浏览文件 @ dddd8366
......@@ -145,6 +145,14 @@ CCostContext::FNeedsNewStats() const
return false;
}
if (!m_pdpplan->Ppim()->FContainsUnresolved())
{
// All partition selectors have been resolved at this level.
// No need to use DPE stats for the common ancestor join and
// nodes above it, that aren't affected by the partition selector.
return false;
}
CEnfdPartitionPropagation *pepp = Poc()->Prpp()->Pepp();
if (GPOS_FTRACE(EopttraceDeriveStatsForDPE) &&
......
src/backend/gporca/libgpopt/src/operators/CExpressionHandle.cpp
浏览文件 @ dddd8366
......@@ -533,6 +533,9 @@ CExpressionHandle::DeriveCostContextStats()
{
// there is no need to derive stats,
// stats are copied from owner group
// (note that m_pdrgpstat may not contain the correct DPE
// stats of children, but it is used only for deriving the
// stats, which we don't need to do anymore)
return;
}
......@@ -547,8 +550,19 @@ CExpressionHandle::DeriveCostContextStats()
CPhysicalScan *popScan = CPhysicalScan::PopConvert(m_pgexpr->Pop());
IStatistics *pstatsDS = popScan->PstatsDerive(m_mp, *this, m_pcc->Poc()->Prpp(), m_pcc->Poc()->Pdrgpstat());
if (NULL == m_pstats || m_pstats->Rows() > pstatsDS->Rows())
{
// Replace the group stats with our newly derived DPE stats
CRefCount::SafeRelease(m_pstats);
m_pstats = pstatsDS;
}
else
{
// Eliminating partitions can't possibly increase the row count. If the row
// count is higher, that's likely due to some heuristics in the estimation.
// If the row count is the same, there is no need to use DPE stats.
pstatsDS->Release();
}
return;
}
......@@ -557,7 +571,7 @@ CExpressionHandle::DeriveCostContextStats()
CRefCount::SafeRelease(m_pstats);
m_pstats = NULL;
// load stats from child cost context -- these may be different from child groups stats
// load stats from child cost context(s) -- these may be different from child groups stats
CRefCount::SafeRelease(m_pdrgpstat);
m_pdrgpstat = NULL;
......
src/backend/gporca/libgpopt/src/operators/CPhysicalJoin.cpp
浏览文件 @ dddd8366
......@@ -1224,6 +1224,7 @@ CPhysicalJoin::PppsRequiredJoinChild
return PppsRequiredCompute(mp, exprhdl, pppsRequired, child_index, fNLJoin);
}
// try to find a previously generated CPartitionPropagationSpec in the cache, m_phmpp
CPartitionPropagationSpec *ppps = m_phmpp->Find(pppr);
if (NULL == ppps)
{
......
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