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First phase of work on array improvements. ARRAY[x,y,z] constructor

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expressions, ARRAY(sub-SELECT) expressions, some array functions.
Polymorphic functions using ANYARRAY/ANYELEMENT argument and return
types.  Some regression tests in place, documentation is lacking.
Joe Conway, with some kibitzing from Tom Lane.
This commit is contained in:
Tom Lane
2003-04-08 23:20:04 +00:00
parent 6fb5115850
commit 730840c9b6
47 changed files with 2597 additions and 479 deletions
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25
src/backend/catalog/pg_proc.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/catalog/pg_proc.c,v 1.95 2002/12/12 15:49:24 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/catalog/pg_proc.c,v 1.96 2003/04/08 23:20:00 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -86,6 +86,29 @@ ProcedureCreate(const char *procedureName,
elog(ERROR, "functions cannot have more than %d arguments",
FUNC_MAX_ARGS);
/*
* Do not allow return type ANYARRAY or ANYELEMENT unless at least one
* argument is also ANYARRAY or ANYELEMENT
*/
if (returnType == ANYARRAYOID || returnType == ANYELEMENTOID)
{
bool genericParam = false;
for (i = 0; i < parameterCount; i++)
{
if (parameterTypes[i] == ANYARRAYOID ||
parameterTypes[i] == ANYELEMENTOID)
{
genericParam = true;
break;
}
}
if (!genericParam)
elog(ERROR, "functions returning ANYARRAY or ANYELEMENT must " \
"have at least one argument of either type");
}
/* Make sure we have a zero-padded param type array */
MemSet(typev, 0, FUNC_MAX_ARGS * sizeof(Oid));
if (parameterCount > 0)