diff options
Diffstat (limited to 'src/include/nodes/primnodes.h')
| -rw-r--r-- | src/include/nodes/primnodes.h | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/src/include/nodes/primnodes.h b/src/include/nodes/primnodes.h index 9eb1514c288..789cc83893f 100644 --- a/src/include/nodes/primnodes.h +++ b/src/include/nodes/primnodes.h @@ -10,7 +10,7 @@ * Portions Copyright (c) 1996-2004, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/nodes/primnodes.h,v 1.104 2004/08/29 05:06:57 momjian Exp $ + * $PostgreSQL: pgsql/src/include/nodes/primnodes.h,v 1.105 2004/12/11 23:26:49 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -591,6 +591,27 @@ typedef struct RelabelType CoercionForm relabelformat; /* how to display this node */ } RelabelType; +/* ---------------- + * ConvertRowtypeExpr + * + * ConvertRowtypeExpr represents a type coercion from one composite type + * to another, where the source type is guaranteed to contain all the columns + * needed for the destination type plus possibly others; the columns need not + * be in the same positions, but are matched up by name. This is primarily + * used to convert a whole-row value of an inheritance child table into a + * valid whole-row value of its parent table's rowtype. + * ---------------- + */ + +typedef struct ConvertRowtypeExpr +{ + Expr xpr; + Expr *arg; /* input expression */ + Oid resulttype; /* output type (always a composite type) */ + /* result typmod is not stored, but must be -1; see RowExpr comments */ + CoercionForm convertformat; /* how to display this node */ +} ConvertRowtypeExpr; + /*---------- * CaseExpr - a CASE expression * |