On Wed, Jan 21, 2009 at 10:48:09AM +0000, Roger Leigh wrote: > Ah, thanks for the clarification. So I need to use CREATE TYPE > rather than CREATE DOMAIN. Because I'm essentially just storing > a text string with different operators, can I derive a type from > TEXT (perhaps by reusing the same input, output, receive and send > functions as TEXT?) I saw the textsend and textreceive functions, > which I assume are the appropriate functions for send and receive? > Are there any for input and output which I may reuse? Yes, you can copy all the existing attributes. Use: select * from pg_type where typname='text'; To get the relevent info (upcoming 8.4 will have CREATE TYPE xxx (LIKE=text) ). Lookup the citext project for an example. Have a nice day, -- Martijn van Oosterhout <kleptog@xxxxxxxxx> http://svana.org/kleptog/ > Please line up in a tree and maintain the heap invariant while > boarding. Thank you for flying nlogn airlines.
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