On Mon, Nov 17, 2025 at 08:53:35PM +0800, jian he wrote:
> segfault:
> SELECT '[{"attributes" : [1,2,3,4,5,67,6,7,8], "ndistinct" :
> 4}]'::pg_ndistinct;
>
> because src/backend/statistics/mvdistinct.c line: 310, Assert
> Assert((item->nattributes >= 2) && (item->nattributes <=
> STATS_MAX_DIMENSIONS));Ahah, good one here. Perhaps we had better switch this assertion to become an elog() with the import functions in mind, as well. It may be worth double-checking the other deserialization paths, as well. We need to be super careful about this stuff for data imports. -- Michael
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