David Johnston <polobo@xxxxxxxxx> writes: > James Harper wrote >> So suppose I wanted to implement myvarchar in C. In my _in function, how >> do I know how big my column declaration is? Eg if someone tries to insert >> 50 characters into my 42 character field, how do I get the declared length >> and then tell postgres that the data to be inserted is too big? > There is no current way for a function body to examine the type modifiers of > its input, domain or otherwise. Actually the point here is to know the required type modifier of the *output*. Type input functions do get passed the target typmod, as a separate argument. See varcharin() for an example. regards, tom lane -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
