diff options
Diffstat (limited to 'src/include/nodes/plannodes.h')
| -rw-r--r-- | src/include/nodes/plannodes.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/src/include/nodes/plannodes.h b/src/include/nodes/plannodes.h index 79876100d5a..5ca1b0f8fbe 100644 --- a/src/include/nodes/plannodes.h +++ b/src/include/nodes/plannodes.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/nodes/plannodes.h,v 1.117 2010/02/26 02:01:25 momjian Exp $ + * $PostgreSQL: pgsql/src/include/nodes/plannodes.h,v 1.118 2010/07/12 17:01:06 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -432,13 +432,26 @@ typedef struct Join /* ---------------- * nest loop join node + * + * The nestParams list identifies any executor Params that must be passed + * into execution of the inner subplan carrying values from the current row + * of the outer subplan. Currently we restrict these values to be simple + * Vars, but perhaps someday that'd be worth relaxing. * ---------------- */ typedef struct NestLoop { Join join; + List *nestParams; /* list of NestLoopParam nodes */ } NestLoop; +typedef struct NestLoopParam +{ + NodeTag type; + int paramno; /* number of the PARAM_EXEC Param to set */ + Var *paramval; /* outer-relation Var to assign to Param */ +} NestLoopParam; + /* ---------------- * merge join node * |