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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2004-05-10 22:44:49 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2004-05-10 22:44:49 +0000 |
| commit | 2f63232d30ca64a8f2684af855230f23a701d371 (patch) | |
| tree | b7a7707d1ec9edf368780cd3f4a23755527c5884 /src/include/nodes/execnodes.h | |
| parent | 9a939886ac782cfee3cd5fdd1c58689163ed84be (diff) | |
| download | postgresql-2f63232d30ca64a8f2684af855230f23a701d371.tar.gz postgresql-2f63232d30ca64a8f2684af855230f23a701d371.zip | |
Promote row expressions to full-fledged citizens of the expression syntax,
rather than allowing them only in a few special cases as before. In
particular you can now pass a ROW() construct to a function that accepts
a rowtype parameter. Internal generation of RowExprs fixes a number of
corner cases that used to not work very well, such as referencing the
whole-row result of a JOIN or subquery. This represents a further step in
the work I started a month or so back to make rowtype values into
first-class citizens.
Diffstat (limited to 'src/include/nodes/execnodes.h')
| -rw-r--r-- | src/include/nodes/execnodes.h | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/include/nodes/execnodes.h b/src/include/nodes/execnodes.h index 8a0fbf7be0f..325bf876800 100644 --- a/src/include/nodes/execnodes.h +++ b/src/include/nodes/execnodes.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/nodes/execnodes.h,v 1.115 2004/04/01 21:28:46 tgl Exp $ + * $PostgreSQL: pgsql/src/include/nodes/execnodes.h,v 1.116 2004/05/10 22:44:49 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -614,6 +614,17 @@ typedef struct ArrayExprState } ArrayExprState; /* ---------------- + * RowExprState node + * ---------------- + */ +typedef struct RowExprState +{ + ExprState xprstate; + List *args; /* the arguments */ + TupleDesc tupdesc; /* descriptor for result tuples */ +} RowExprState; + +/* ---------------- * CoalesceExprState node * ---------------- */ |