Select representative size of sample

Shaozhong SHI <[email protected]> Tue, 29 Apr 2025 10:20:57 +0100
Newsgroups gmane.comp.gis.postgis
Message-ID <CA+i5JwZJ8g_Yyz-1kr_h01Q5-WFrNXNXkX_XqNH670mhDJ67dg@mail.gmail.com>
How to select a representative size of sample from a table for test?

Regards,

David