Janek Sendrowski wrote: > Is there a documentation of postgresql's C functions like SET_VARSIZE for exmaple? For things like this consult the source code. In src/include/postgres.h you'll find: /* * VARDATA, VARSIZE, and SET_VARSIZE are the recommended API for most code * for varlena datatypes. Note that they only work on untoasted, * 4-byte-header Datums! * * Code that wants to use 1-byte-header values without detoasting should * use VARSIZE_ANY/VARSIZE_ANY_EXHDR/VARDATA_ANY. The other macros here * should usually be used only by tuple assembly/disassembly code and * code that specifically wants to work with still-toasted Datums. * * WARNING: It is only safe to use VARDATA_ANY() -- typically with * PG_DETOAST_DATUM_PACKED() -- if you really don't care about the alignment. * Either because you're working with something like text where the alignment * doesn't matter or because you're not going to access its constituent parts * and just use things like memcpy on it anyways. */ The server side C API is not documented in the documentation, because it is already (hopefully) well documented in the source. Yours, Laurenz Albe -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
