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Tags: upstream-8.4.0
Import upstream version 8.4.0

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src/backend/commands/aggregatecmds.c
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 *
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 *
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 * IDENTIFICATION
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 *        $PostgreSQL: pgsql/src/backend/commands/aggregatecmds.c,v 1.48 2009/01/01 17:23:37 momjian Exp $
 
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 *        $PostgreSQL: pgsql/src/backend/commands/aggregatecmds.c,v 1.49 2009/06/11 14:48:55 momjian Exp $
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 *
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 * DESCRIPTION
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 *        The "DefineFoo" routines take the parse tree and pick out the
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         *
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         * transtype can't be a pseudo-type, since we need to be able to store
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         * values of the transtype.  However, we can allow polymorphic transtype
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         * in some cases (AggregateCreate will check).  Also, we allow "internal"
 
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         * in some cases (AggregateCreate will check).  Also, we allow "internal"
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         * for functions that want to pass pointers to private data structures;
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         * but allow that only to superusers, since you could crash the system
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         * (or worse) by connecting up incompatible internal-using functions
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         * in an aggregate.
 
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         * but allow that only to superusers, since you could crash the system (or
 
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         * worse) by connecting up incompatible internal-using functions in an
 
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         * aggregate.
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         */
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        transTypeId = typenameTypeId(NULL, transType, NULL);
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        if (get_typtype(transTypeId) == TYPTYPE_PSEUDO &&
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                !IsPolymorphicType(transTypeId))
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        {
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                if (transTypeId == INTERNALOID && superuser())
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                        /* okay */ ;
 
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                         /* okay */ ;
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                else
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                        ereport(ERROR,
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                                        (errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),