Can anyone explain to me how the "ps_OuterTupleSlot" in PlanState is being used in implementing HashJoin?

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От Ran Tang
Тема Can anyone explain to me how the "ps_OuterTupleSlot" in PlanState is being used in implementing HashJoin?
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Msg-id 3CB8AFE7D4C3400B980E1B91E441ED87@RanPC
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Ответы Re: Can anyone explain to me how the "ps_OuterTupleSlot" in PlanState is being used in implementing HashJoin?  (Tom Lane <tgl@sss.pgh.pa.us>)
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Hello there,
 
Can anyone explain to me how the "ps_OuterTupleSlot" in JoinState is being used in implementing HashJoin?
 
 
I looked at the source code. When it find a tuple in outer relation. It store the outer tuple to field   :  node->js.ps.ps_OuterTupleSlot
 
But I can't find how this field is being used in the following processing.
 
 
Thanks,
 
Ran

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