diff options
Diffstat (limited to 'src/include/nodes/relation.h')
| -rw-r--r-- | src/include/nodes/relation.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/include/nodes/relation.h b/src/include/nodes/relation.h index b1cedcc850a..34727773e06 100644 --- a/src/include/nodes/relation.h +++ b/src/include/nodes/relation.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/nodes/relation.h,v 1.128.2.3 2007/05/22 23:24:09 tgl Exp $ + * $PostgreSQL: pgsql/src/include/nodes/relation.h,v 1.128.2.4 2007/08/31 01:44:14 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -852,6 +852,11 @@ typedef struct InnerIndexscanInfo * It is not valid for either min_lefthand or min_righthand to be empty sets; * if they were, this would break the logic that enforces join order. * + * syn_lefthand and syn_righthand are the sets of base relids that are + * syntactically below this outer join. (These are needed to help compute + * min_lefthand and min_righthand for higher joins, but are not used + * thereafter.) + * * delay_upper_joins is set TRUE if we detect a pushed-down clause that has * to be evaluated after this join is formed (because it references the RHS). * Any outer joins that have such a clause and this join in their RHS cannot @@ -869,6 +874,8 @@ typedef struct OuterJoinInfo NodeTag type; Relids min_lefthand; /* base relids in minimum LHS for join */ Relids min_righthand; /* base relids in minimum RHS for join */ + Relids syn_lefthand; /* base relids syntactically within LHS */ + Relids syn_righthand; /* base relids syntactically within RHS */ bool is_full_join; /* it's a FULL OUTER JOIN */ bool lhs_strict; /* joinclause is strict for some LHS rel */ bool delay_upper_joins; /* can't commute with upper RHS */ |