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Fix rel->pages of hypothetical partition

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This commit is contained in:
yuzupy 2018-03-27 08:53:38 +00:00
parent 2006c2477e
commit c6922fd4eb
1 changed files with 18 additions and 18 deletions
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36
hypopg_table.c
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@ -1848,44 +1848,44 @@ hypo_injectHypotheticalPartitioning(PlannerInfo *root,
pcinfo->parent_relid = oldsize;
pcinfo->child_rels = partitioned_child_rels;
root->pcinfo_list = lappend(root->pcinfo_list, pcinfo);
/* add partition info to this rel */
hypo_partition_table(root, rel, parent);
}
/*
/*
* if this rel is partition, rewrite tuples and pages using selectivity
* which is computed according to its partition constraints
*/
if (rel->reloptkind != RELOPT_BASEREL
&&HYPO_RTI_IS_TAGGED(rel->relid,root))
{
&&HYPO_RTI_IS_TAGGED(rel->relid,root))
{
List *constraints;
PlannerInfo *root_dummy;
Selectivity selectivity;
double pages;
/* get its partition constraints */
constraints = hypo_get_partition_constraints(root, rel, parent);
/*
/*
* to compute selectivity, make dummy PlannerInfo and then rewrite
* tuples and pages using this selectivity
*/
root_dummy = makeNode(PlannerInfo);
root_dummy = root;
root_dummy->simple_rel_array[rel->relid] = rel;
selectivity = clauselist_selectivity(root_dummy,
constraints,
0,
JOIN_INNER,
NULL);
rel->pages = rint(rel->pages * selectivity);
selectivity = clauselist_selectivity(root_dummy,
constraints,
0,
JOIN_INNER,
NULL);
pages = ceil(rel->pages * selectivity);
rel->pages = (BlockNumber)pages;
rel->tuples = clamp_row_est(rel->tuples * selectivity);
}
}
}