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Ye-old pgindent run. Same 4-space tabs.

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This commit is contained in:
Bruce Momjian
2000-04-12 17:17:23 +00:00
parent db4518729d
commit 52f77df613
434 changed files with 24799 additions and 21246 deletions
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81
src/backend/optimizer/util/relnode.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/util/relnode.c,v 1.25 2000/02/18 23:47:31 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/util/relnode.c,v 1.26 2000/04/12 17:15:24 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -24,15 +24,15 @@
static List *new_join_tlist(List *tlist, int first_resdomno);
static List *build_joinrel_restrictlist(RelOptInfo *joinrel,
RelOptInfo *outer_rel,
RelOptInfo *inner_rel);
RelOptInfo *outer_rel,
RelOptInfo *inner_rel);
static void build_joinrel_joinlist(RelOptInfo *joinrel,
RelOptInfo *outer_rel,
RelOptInfo *inner_rel);
RelOptInfo *outer_rel,
RelOptInfo *inner_rel);
static List *subbuild_joinrel_restrictlist(RelOptInfo *joinrel,
List *joininfo_list);
List *joininfo_list);
static void subbuild_joinrel_joinlist(RelOptInfo *joinrel,
List *joininfo_list);
List *joininfo_list);
/*
@ -50,7 +50,10 @@ get_base_rel(Query *root, int relid)
{
rel = (RelOptInfo *) lfirst(baserels);
/* We know length(rel->relids) == 1 for all members of base_rel_list */
/*
* We know length(rel->relids) == 1 for all members of
* base_rel_list
*/
if (lfirsti(rel->relids) == relid)
return rel;
}
@ -75,18 +78,20 @@ get_base_rel(Query *root, int relid)
if (relid < 0)
{
/*
* If the relation is a materialized relation, assume
* constants for sizes.
* If the relation is a materialized relation, assume constants
* for sizes.
*/
rel->pages = _NONAME_RELATION_PAGES_;
rel->tuples = _NONAME_RELATION_TUPLES_;
}
else
{
/*
* Otherwise, retrieve relation statistics from the
* system catalogs.
* Otherwise, retrieve relation statistics from the system
* catalogs.
*/
relation_info(root, relid,
&rel->indexed, &rel->pages, &rel->tuples);
@ -162,6 +167,7 @@ get_join_rel(Query *root,
if (joinrel)
{
/*
* Yes, so we only need to figure the restrictlist for this
* particular pair of component relations.
@ -198,13 +204,13 @@ get_join_rel(Query *root,
* of the outer and inner join relations and then merging the results
* together.
*
* NOTE: the tlist order for a join rel will depend on which pair
* of outer and inner rels we first try to build it from. But the
* NOTE: the tlist order for a join rel will depend on which pair of
* outer and inner rels we first try to build it from. But the
* contents should be the same regardless.
*
* XXX someday: consider pruning vars from the join's targetlist
* if they are needed only to evaluate restriction clauses of this
* join, and will never be accessed at higher levels of the plantree.
* XXX someday: consider pruning vars from the join's targetlist if they
* are needed only to evaluate restriction clauses of this join, and
* will never be accessed at higher levels of the plantree.
*/
new_outer_tlist = new_join_tlist(outer_rel->targetlist, 1);
new_inner_tlist = new_join_tlist(inner_rel->targetlist,
@ -212,9 +218,9 @@ get_join_rel(Query *root,
joinrel->targetlist = nconc(new_outer_tlist, new_inner_tlist);
/*
* Construct restrict and join clause lists for the new joinrel.
* (The caller might or might not need the restrictlist, but
* I need it anyway for set_joinrel_size_estimates().)
* Construct restrict and join clause lists for the new joinrel. (The
* caller might or might not need the restrictlist, but I need it
* anyway for set_joinrel_size_estimates().)
*/
restrictlist = build_joinrel_restrictlist(joinrel, outer_rel, inner_rel);
if (restrictlist_ptr)
@ -246,7 +252,7 @@ get_join_rel(Query *root,
*
* XXX the above comment refers to code that is long dead and gone;
* we don't keep track of joinlists for individual targetlist entries
* anymore. For now, all vars present in either input tlist will be
* anymore. For now, all vars present in either input tlist will be
* emitted in the join's tlist.
*
* 'tlist' is the target list of one of the join relations
@ -286,16 +292,16 @@ new_join_tlist(List *tlist,
* the join lists need only be computed once for any join RelOptInfo.
* The join lists are fully determined by the set of rels making up the
* joinrel, so we should get the same results (up to ordering) from any
* candidate pair of sub-relations. But the restriction list is whatever
* candidate pair of sub-relations. But the restriction list is whatever
* is not handled in the sub-relations, so it depends on which
* sub-relations are considered.
*
* If a join clause from an input relation refers to base rels still not
* present in the joinrel, then it is still a join clause for the joinrel;
* we put it into an appropriate JoinInfo list for the joinrel. Otherwise,
* we put it into an appropriate JoinInfo list for the joinrel. Otherwise,
* the clause is now a restrict clause for the joined relation, and we
* return it to the caller of build_joinrel_restrictlist() to be stored in
* join paths made from this pair of sub-relations. (It will not need to
* join paths made from this pair of sub-relations. (It will not need to
* be considered further up the join tree.)
*
* 'joinrel' is a join relation node
@ -304,11 +310,11 @@ new_join_tlist(List *tlist,
*
* build_joinrel_restrictlist() returns a list of relevant restrictinfos,
* whereas build_joinrel_joinlist() stores its results in the joinrel's
* joininfo lists. One or the other must accept each given clause!
* joininfo lists. One or the other must accept each given clause!
*
* NB: Formerly, we made deep(!) copies of each input RestrictInfo to pass
* up to the join relation. I believe this is no longer necessary, because
* RestrictInfo nodes are no longer context-dependent. Instead, just include
* RestrictInfo nodes are no longer context-dependent. Instead, just include
* the original nodes in the lists made for the join relation.
*/
static List *
@ -316,9 +322,10 @@ build_joinrel_restrictlist(RelOptInfo *joinrel,
RelOptInfo *outer_rel,
RelOptInfo *inner_rel)
{
/*
* We must eliminate duplicates, since we will see the
* same clauses arriving from both input relations...
* We must eliminate duplicates, since we will see the same clauses
* arriving from both input relations...
*/
return LispUnion(subbuild_joinrel_restrictlist(joinrel,
outer_rel->joininfo),
@ -348,6 +355,7 @@ subbuild_joinrel_restrictlist(RelOptInfo *joinrel,
if (is_subseti(joininfo->unjoined_relids, joinrel->relids))
{
/*
* Clauses in this JoinInfo list become restriction clauses
* for the joinrel, since they refer to no outside rels.
@ -360,9 +368,10 @@ subbuild_joinrel_restrictlist(RelOptInfo *joinrel,
}
else
{
/*
* These clauses are still join clauses at this level,
* so we ignore them in this routine.
* These clauses are still join clauses at this level, so we
* ignore them in this routine.
*/
}
}
@ -385,18 +394,20 @@ subbuild_joinrel_joinlist(RelOptInfo *joinrel,
joinrel->relids);
if (new_unjoined_relids == NIL)
{
/*
* Clauses in this JoinInfo list become restriction clauses
* for the joinrel, since they refer to no outside rels.
* So we can ignore them in this routine.
* for the joinrel, since they refer to no outside rels. So we
* can ignore them in this routine.
*/
}
else
{
/*
* These clauses are still join clauses at this level,
* so find or make the appropriate JoinInfo item for the joinrel,
* and add the clauses to it (eliminating duplicates).
* These clauses are still join clauses at this level, so find
* or make the appropriate JoinInfo item for the joinrel, and
* add the clauses to it (eliminating duplicates).
*/
JoinInfo *new_joininfo;