On Sun, Jul 01, 2007 at 07:20:08PM -0700, Eric wrote: > > > > > Everything is always passed as a Datum, so yes, it's is determined by > > the storage clause in CREATE TYPE. > > Still not sure what to do in some scenarios. One example is the gist > example code for btree (btree_gist). If you look at the int4 example > consistent function, it gets an int32 value (param 1). For other > data types, it would get a pointer to a value. Is the rule anything > <= 4 bytes it's a value, above that it's a pointer? See the code > below...
Why guess. You know the type ID of what you're manipulating, right. Then the function: get_typlenbyval(Oid typid, int16 *typlen, bool *typbyval); Returns the byval flag (true if passed by value, false if passed by reference) and the typlen field will be either a positive integer, representing the number of bytes, or negative for variable length. Have a nice day, -- Martijn van Oosterhout <[EMAIL PROTECTED]> http://svana.org/kleptog/ > From each according to his ability. To each according to his ability to > litigate.
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