Обсуждение: Functions and tablenames

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Functions and tablenames

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"Julie Hunt"
Дата:
Hi
I would like to create a function that passes a tablename as a variable, but I do not know what 'datatype' a tablename is supposed to be.
 
CREATE FUNCTION find_max_id(int4, tablename?) RETURNS int4
AS 'Select max($1) FROM $2'
LANGUAGE 'sql';
 
When I put text as the datatype for the tablename the error was a problem near $2.
Could someone please help me.
Thanks
Julie Hunt