Hi:
Every pg_type has typinput/typoutput and typreceive/typsend
they are used for text format and binary format accordingly. What is
the difference between them in practice? For example, for a PG user,
shall they choose binary format or text format? Actually I don't even
know how to set this in JDBC. Which one is more common in real
life and why?
The reason I ask this is because I have a task to make numeric output
similar to oracle.
Oracle:
SQL> select 2 / 1.0 from dual;
2/1.0
----------
2
PG:
postgres=# select 2 / 1.0;
?column?
--------------------
2.0000000000000000
(1 row)
If the user uses text format, I can just hack some numeric_out function, but if they
use binary format, looks I have to change the driver they used for it. Am I
understand it correctly?
