On Tue, 2020-08-11 at 11:31 +0000, mohand oubelkacem makhoukhene wrote: > I whould like to implement a new data type next to char, number, varchar... A Money type. > So i'll have to change the source code, but i don't know which fonctions i need to change and which part to work on. You don't need to change the source, you could create an extension using a shared library that can be loaded into the server at run time. The documentation has more: https://www.postgresql.org/docs/current/xfunc-c.html#XFUNC-C-BASETYPE https://www.postgresql.org/docs/current/extend-extensions.html https://www.postgresql.org/docs/current/extend-pgxs.html Yours, Laurenz Albe
