diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/include/nodes/relation.h | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/src/include/nodes/relation.h b/src/include/nodes/relation.h index 9cb4370c854..9934daa64a8 100644 --- a/src/include/nodes/relation.h +++ b/src/include/nodes/relation.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/nodes/relation.h,v 1.160 2008/10/04 21:56:55 tgl Exp $ + * $PostgreSQL: pgsql/src/include/nodes/relation.h,v 1.161 2008/10/17 20:23:45 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -244,8 +244,10 @@ typedef struct PlannerInfo * width - avg. number of bytes per tuple in the relation after the * appropriate projections have been done (ie, output width) * reltargetlist - List of Var nodes for the attributes we need to - * output from this relation (in no particular order) - * NOTE: in a child relation, may contain RowExprs + * output from this relation (in no particular order, + * but all rels of an appendrel set must use same order) + * NOTE: in a child relation, may contain RowExpr or + * ConvertRowtypeExpr representing a whole-row Var * pathlist - List of Path nodes, one for each potentially useful * method of generating the relation * cheapest_startup_path - the pathlist member with lowest startup cost @@ -337,7 +339,7 @@ typedef struct RelOptInfo int width; /* estimated avg width of result tuples */ /* materialization information */ - List *reltargetlist; /* needed Vars */ + List *reltargetlist; /* Vars to be output by scan of relation */ List *pathlist; /* Path structures */ struct Path *cheapest_startup_path; struct Path *cheapest_total_path; @@ -350,7 +352,7 @@ typedef struct RelOptInfo AttrNumber max_attr; /* largest attrno of rel */ Relids *attr_needed; /* array indexed [min_attr .. max_attr] */ int32 *attr_widths; /* array indexed [min_attr .. max_attr] */ - List *indexlist; + List *indexlist; /* list of IndexOptInfo */ BlockNumber pages; double tuples; struct Plan *subplan; /* if subquery */ |