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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2004-12-11 23:26:51 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2004-12-11 23:26:51 +0000 |
| commit | 12b1b5d837b5ce1c07ee3535e74e4cc3039063d6 (patch) | |
| tree | 1ef0ecc2ccfba9a8a33f0b20ef31533b499cbdba /src/include/nodes/execnodes.h | |
| parent | fd536dd257b12a8b1abf8d744d8a3688e1db126b (diff) | |
| download | postgresql-12b1b5d837b5ce1c07ee3535e74e4cc3039063d6.tar.gz postgresql-12b1b5d837b5ce1c07ee3535e74e4cc3039063d6.zip | |
Instead of supposing (wrongly, in the general case) that the rowtype
of an inheritance child table is binary-compatible with the rowtype of
its parent, invent an expression node type that does the conversion
correctly. Fixes the new bug exhibited by Kris Shannon as well as a
lot of old bugs that would only show up when using multiple inheritance
or after altering the parent table.
Diffstat (limited to 'src/include/nodes/execnodes.h')
| -rw-r--r-- | src/include/nodes/execnodes.h | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/src/include/nodes/execnodes.h b/src/include/nodes/execnodes.h index 07176952032..7b5a75868ba 100644 --- a/src/include/nodes/execnodes.h +++ b/src/include/nodes/execnodes.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2004, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/nodes/execnodes.h,v 1.120 2004/10/07 18:38:51 tgl Exp $ + * $PostgreSQL: pgsql/src/include/nodes/execnodes.h,v 1.121 2004/12/11 23:26:49 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -579,6 +579,23 @@ typedef struct FieldStoreState } FieldStoreState; /* ---------------- + * ConvertRowtypeExprState node + * ---------------- + */ +typedef struct ConvertRowtypeExprState +{ + ExprState xprstate; + ExprState *arg; /* input tuple value */ + TupleDesc indesc; /* tupdesc for source rowtype */ + TupleDesc outdesc; /* tupdesc for result rowtype */ + AttrNumber *attrMap; /* indexes of input fields, or 0 for null */ + Datum *invalues; /* workspace for deconstructing source */ + char *innulls; + Datum *outvalues; /* workspace for constructing result */ + char *outnulls; +} ConvertRowtypeExprState; + +/* ---------------- * CaseExprState node * ---------------- */ |