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Remove pg_class.relhaspkey

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It is not used for anything internally, and it cannot be relied on for
external uses, so it can just be removed.  To correct recommended way to
check for a primary key is in pg_index.

Discussion: https://www.postgresql.org/message-id/flat/b1a24c6c-6913-f89c-674e-0704f0ed69db@2ndquadrant.com
This commit is contained in:
Peter Eisentraut
2018-03-14 14:59:40 -04:00
parent 6b960aae90
commit f66e8bf875
7 changed files with 21 additions and 72 deletions
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10
src/backend/commands/vacuum.c
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@ -909,16 +909,6 @@ vac_update_relstats(Relation relation,
dirty = true;
}
/*
* If we have discovered that there are no indexes, then there's no
* primary key either. This could be done more thoroughly...
*/
if (pgcform->relhaspkey && !hasindex)
{
pgcform->relhaspkey = false;
dirty = true;
}
/* We also clear relhasrules and relhastriggers if needed */
if (pgcform->relhasrules && relation->rd_rules == NULL)
{