PG Doc comments form <noreply@postgresql.org> writes: > It would be nice to add a break-down of why the TOAST Pointer size is 18 > bytes Use the source, Luke. The useful pointer data is indeed 16 bytes: https://git.postgresql.org/gitweb/?p=postgresql.git;a=blob;f=src/include/postgres.h;h=c48f47e930ad05d3ae2e24b0c0c85662cd058a7b;hb=HEAD#l67 but there's varlena tag overhead: https://git.postgresql.org/gitweb/?p=postgresql.git;a=blob;f=src/include/postgres.h;h=c48f47e930ad05d3ae2e24b0c0c85662cd058a7b;hb=HEAD#l159 This doesn't seem like appropriate detail for the user docs. regards, tom lane
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