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Commit3778bcb

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Count SP-GiST index scans in pg_stat statistics.
Somehow, spgist overlooked the need to call pgstat_count_index_scan().Hence, pg_stat_all_indexes.idx_scan and equivalent columns neverbecame nonzero for an SP-GiST index, although the related per-tuplecounters worked fine.This fix works a bit differently from other index AMs, in that thecounter increment occurs in spgrescan not spggettuple/spggetbitmap.It looks like this won't make the user-visible semantics noticeablydifferent, so I won't go to the trouble of introducing an is-this-the-first-call flag just to make the counter bumps happen in thesame places.Per bug #17163 from Christian Quest. Back-patch to all supportedversions.Discussion:https://postgr.es/m/17163-b8c5cc88322a5e92@postgresql.org
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‎src/backend/access/spgist/spgscan.c

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@@ -19,6 +19,7 @@
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#include"access/relscan.h"
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#include"access/spgist_private.h"
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#include"miscadmin.h"
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#include"pgstat.h"
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#include"storage/bufmgr.h"
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#include"utils/datum.h"
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#include"utils/float.h"
@@ -419,6 +420,9 @@ spgrescan(IndexScanDesc scan, ScanKey scankey, int nscankeys,
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/* set up starting queue entries */
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resetSpGistScanOpaque(so);
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/* count an indexscan for stats */
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pgstat_count_index_scan(scan->indexRelation);
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}
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void

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