I see that PSQL version 7 .6 is same across all the postgres version on windows. Is there no latest version of PSQL .
v7.6 on Windows? You seem quite confused as I don't think anything earlier than 8.0 even existing on the platform.
Also, every official release of PostgreSQL has its version of psql bundled in with it.
Kindly let me know if there are any options at PSQL level or any recommendations.
I recommend you produce a self-contained example to share along with the command you ran and the output that results on Windows and Linux. Include select version(); in the script.