diff options
Diffstat (limited to 'src/include/nodes/primnodes.h')
| -rw-r--r-- | src/include/nodes/primnodes.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/src/include/nodes/primnodes.h b/src/include/nodes/primnodes.h index 0d8efbe988..3315329923 100644 --- a/src/include/nodes/primnodes.h +++ b/src/include/nodes/primnodes.h @@ -10,7 +10,7 @@ * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/nodes/primnodes.h,v 1.145 2009/01/01 17:24:00 momjian Exp $ + * $PostgreSQL: pgsql/src/include/nodes/primnodes.h,v 1.146 2009/02/25 03:30:37 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -1137,7 +1137,9 @@ typedef struct RangeTblRef * * During parse analysis, an RTE is created for the Join, and its index * is filled into rtindex. This RTE is present mainly so that Vars can - * be created that refer to the outputs of the join. + * be created that refer to the outputs of the join. The planner sometimes + * generates JoinExprs internally; these can have rtindex = 0 if there are + * no join alias variables referencing such joins. *---------- */ typedef struct JoinExpr @@ -1150,7 +1152,7 @@ typedef struct JoinExpr List *using; /* USING clause, if any (list of String) */ Node *quals; /* qualifiers on join, if any */ Alias *alias; /* user-written alias clause, if any */ - int rtindex; /* RT index assigned for join */ + int rtindex; /* RT index assigned for join, or 0 */ } JoinExpr; /*---------- |