Adriaan van Os wrote: > Tom Lane wrote: > >Bruce Momjian <[EMAIL PROTECTED]> writes: > >>Peter Eisentraut wrote: > >>>Aside from the apparent discrepancy between the documentation and the > >>>actual behavior, is there an actual use case where this is a problem? > > > >>No, I don't think so, and I am reluctant to adjust the documentation to > >>say "or similar". > > > >The documentation is correct as it stands: max(text) returns text. > >Adriaan's complaint about max(varchar) is off base because there is > >no such function. > > No, the documentation says that the Argument Type of max and min can be > "any array, numeric, string, or date/time type" and that the Return type is > the "same as argument type". The functions min and max applied to a field > of type varchar return a function result of type text. So, if a > max(varchar) function is missing and the cause of the text result type is > implicit type casting, then the fact that there is no max(varchar) function > is exactly the bug.
Do you have a specific situation on which this causes a problem for you? I mean, are you asking because it really bugs you, or just for the sake of being pedantic? -- Alvaro Herrera Valdivia, Chile ICBM: S 39º 49' 18.1", W 73º 13' 56.4" Tulio: oh, para qué servirá este boton, Juan Carlos? Policarpo: No, aléjense, no toquen la consola! Juan Carlos: Lo apretaré una y otra vez. ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend
