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Commit350e6b8

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pg_dump: provide a stable sort order for rules.
Previously, we sorted rules by schema name and then rule name;if that wasn't unique, we sorted by rule OID. This can beproblematic for comparing dumps from databases with differenthistories, especially since certain rule names like "_RETURN"are very common. Let's make the sort key schema name, rule name,table name, which should be unique. (This is the same behaviorwe've long used for triggers and RLS policies.)Andreas KarlssonDiscussion:https://postgr.es/m/b4e468d8-0cd6-42e6-ac8a-1d6afa6e0cf1@proxel.se
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‎src/bin/pg_dump/pg_dump_sort.c

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Original file line numberDiff line numberDiff line change
@@ -294,6 +294,17 @@ DOTypeNameCompare(const void *p1, const void *p2)
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if (cmpval!=0)
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returncmpval;
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}
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elseif (obj1->objType==DO_RULE)
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{
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RuleInfo*robj1=*(RuleInfo*const*)p1;
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RuleInfo*robj2=*(RuleInfo*const*)p2;
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/* Sort by table name (table namespace was considered already) */
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cmpval=strcmp(robj1->ruletable->dobj.name,
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robj2->ruletable->dobj.name);
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if (cmpval!=0)
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returncmpval;
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}
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elseif (obj1->objType==DO_TRIGGER)
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{
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TriggerInfo*tobj1=*(TriggerInfo*const*)p1;

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