benj.dev@laposte.net writes:
> In https://www.postgresql.org/docs/13/storage-page-layout.html<br>
> we can find on § 68.6.1. Table Row Layout<br>
> the Table 68.4. HeapTupleHeaderData Layout<br>
> <br>
> When additionning Length of differents Fields taht are present we obtain atotal of<br>
> 4+4+4+4+6+2+2+1 = 27<br>
I think you missed the point that t_cid overlays with t_xvac.
regards, tom lane