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Fix partitioned index creation bug with dropped columns
ALTER INDEX .. ATTACH PARTITION fails if the partitioned table where the index is defined contains more dropped columns than its partition, with this message: ERROR: incorrect attribute map The cause was that one caller of CompareIndexInfo was passing the number of attributes of the partition rather than the parent, which confused the length check. Repair. This can cause pg_upgrade to fail when used on such a database. Leave some more objects around after regression tests, so that the case is detected by pg_upgrade test suite. Remove some spurious empty lines noticed while looking for other cases of the same problem. Discussion: https://postgr.es/m/20190326213924.GA2322@alvherre.pgsql
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@ -1871,7 +1871,6 @@ CompareIndexInfo(IndexInfo *info1, IndexInfo *info2,
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if (info1->ii_NumIndexKeyAttrs != info2->ii_NumIndexKeyAttrs)
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return false;
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/*
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* and columns match through the attribute map (actual attribute numbers
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* might differ!) Note that this implies that index columns that are
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@ -928,7 +928,6 @@ DefineIndex(Oid relationId,
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gettext_noop("could not convert row type"));
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maplen = parentDesc->natts;
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foreach(cell, childidxs)
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{
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Oid cldidxid = lfirst_oid(cell);
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@ -15518,7 +15518,7 @@ ATExecAttachPartitionIdx(List **wqueue, Relation parentIdx, RangeVar *name)
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partIdx->rd_opfamily,
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parentIdx->rd_opfamily,
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attmap,
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RelationGetDescr(partTbl)->natts))
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RelationGetDescr(parentTbl)->natts))
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ereport(ERROR,
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(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
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errmsg("cannot attach index \"%s\" as a partition of index \"%s\"",
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@ -1360,6 +1360,11 @@ alter index idxpart2_a_idx attach partition idxpart22_a_idx;
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create index on idxpart (a);
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create table idxpart_another (a int, b int, primary key (a, b)) partition by range (a);
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create table idxpart_another_1 partition of idxpart_another for values from (0) to (100);
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create table idxpart3 (c int, b int, a int) partition by range (a);
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alter table idxpart3 drop column b, drop column c;
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create table idxpart31 partition of idxpart3 for values from (1000) to (1200);
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create table idxpart32 partition of idxpart3 for values from (1200) to (1400);
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alter table idxpart attach partition idxpart3 for values from (1000) to (2000);
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-- Test that covering partitioned indexes work in various cases
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create table covidxpart (a int, b int) partition by list (a);
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create unique index on covidxpart (a) include (b);
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@ -720,6 +720,11 @@ alter index idxpart2_a_idx attach partition idxpart22_a_idx;
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create index on idxpart (a);
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create table idxpart_another (a int, b int, primary key (a, b)) partition by range (a);
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create table idxpart_another_1 partition of idxpart_another for values from (0) to (100);
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create table idxpart3 (c int, b int, a int) partition by range (a);
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alter table idxpart3 drop column b, drop column c;
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create table idxpart31 partition of idxpart3 for values from (1000) to (1200);
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create table idxpart32 partition of idxpart3 for values from (1200) to (1400);
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alter table idxpart attach partition idxpart3 for values from (1000) to (2000);
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-- Test that covering partitioned indexes work in various cases
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create table covidxpart (a int, b int) partition by list (a);
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