diff options
Diffstat (limited to 'src/include/nodes/relation.h')
| -rw-r--r-- | src/include/nodes/relation.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/src/include/nodes/relation.h b/src/include/nodes/relation.h index 33927edc18d..4b47a84db5f 100644 --- a/src/include/nodes/relation.h +++ b/src/include/nodes/relation.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $Id: relation.h,v 1.56 2001/05/20 20:28:20 tgl Exp $ + * $Id: relation.h,v 1.57 2001/06/05 05:26:05 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -492,7 +492,7 @@ typedef struct HashPath * path is responsible for identifying the restrict clauses it can use * and ignoring the rest. Clauses not implemented by an indexscan, * mergejoin, or hashjoin will be placed in the plan qual or joinqual field - * of the final Plan node, where they will be enforced by general-purpose + * of the finished Plan node, where they will be enforced by general-purpose * qual-expression-evaluation code. (But we are still entitled to count * their selectivity when estimating the result tuple count, if we * can guess what it is...) @@ -504,14 +504,16 @@ typedef struct RestrictInfo Expr *clause; /* the represented clause of WHERE or JOIN */ - Cost eval_cost; /* eval cost of clause; -1 if not yet set */ - bool ispusheddown; /* TRUE if clause was pushed down in level */ /* only used if clause is an OR clause: */ List *subclauseindices; /* indexes matching subclauses */ /* subclauseindices is a List of Lists of IndexOptInfos */ + /* cache space for costs (currently only used for join clauses) */ + Cost eval_cost; /* eval cost of clause; -1 if not yet set */ + Selectivity this_selec; /* selectivity; -1 if not yet set */ + /* valid if clause is mergejoinable, else InvalidOid: */ Oid mergejoinoperator; /* copy of clause operator */ Oid left_sortop; /* leftside sortop needed for mergejoin */ |