Hi, I would like to understand better the logic to determine when a xid is older than another one.
As I could understand, the XID is always incremented, never reset. If it is true, then we can have rows with cmin ranging from 1 to 4.294.967.295 (2^32-1). When xid overflows (32 bits) the next one will be 3 (1 and 2 are reserved). In this case, we could have have lines with cmin 4.294.967.295 and lines with cmin 3. How are they compared to determine that rows with cmin 3 are newer than rows with cmin 4.294.967.295? Thanks in advance, Reimer ---------------------------(end of broadcast)--------------------------- TIP 2: Don't 'kill -9' the postmaster
