Compare varnullingrels too in assign_param_for_var().
Oversight in 2489d76c4
. Preliminary analysis suggests that the
problem may be unreachable --- but if we did have instances of
the same column with different varnullingrels, we'd surely need
to treat them as different Params.
Discussion: https://postgr.es/m/412552.1706203379@sss.pgh.pa.us
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@ -90,7 +90,8 @@ assign_param_for_var(PlannerInfo *root, Var *var)
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pvar->varattno == var->varattno &&
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pvar->vartype == var->vartype &&
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pvar->vartypmod == var->vartypmod &&
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pvar->varcollid == var->varcollid)
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pvar->varcollid == var->varcollid &&
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bms_equal(pvar->varnullingrels, var->varnullingrels))
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return pitem->paramId;
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}
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}
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