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Add a relkind field to RangeTblEntry to avoid some syscache lookups.

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The recent additions for FDW support required checking foreign-table-ness
in several places in the parse/plan chain.  While it's not clear whether
that would really result in a noticeable slowdown, it seems best to avoid
any performance risk by keeping a copy of the relation's relkind in
RangeTblEntry.  That might have some other uses later, anyway.
Per discussion.
This commit is contained in:
Tom Lane
2011-02-22 19:23:23 -05:00
parent 1c51c7d5ff
commit bdca82f44d
19 changed files with 85 additions and 74 deletions
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2
src/backend/nodes/nodeFuncs.c
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@ -1671,7 +1671,6 @@ range_table_walker(List *rtable,
switch (rte->rtekind)
{
case RTE_RELATION:
case RTE_SPECIAL:
case RTE_CTE:
/* nothing to do */
break;
@ -2374,7 +2373,6 @@ range_table_mutator(List *rtable,
switch (rte->rtekind)
{
case RTE_RELATION:
case RTE_SPECIAL:
case RTE_CTE:
/* we don't bother to copy eref, aliases, etc; OK? */
break;