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Improve stability of recently-added regression test case. 

Commit b5febc1d1 added a contrib/btree_gist test case that has been
observed to fail in the buildfarm as a result of background auto-analyze
updating stats and changing the selected plan.  Forestall that by
forcibly analyzing in foreground, instead.  The new plan choice is
just as good for our purposes, since we really only care that an
index-only plan does not get selected.

Back-patch to 9.5, like the previous patch.

Discussion: https://postgr.es/m/14643.1539629304@sss.pgh.pa.us
This commit is contained in:
Tom Lane 2018-10-16 12:01:18 -04:00
parent 3dfef0c519
commit 17d6a8fb76
2 changed files with 12 additions and 16 deletions
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26
contrib/btree_gist/expected/inet.out
View File

@ -64,18 +64,16 @@ SELECT count(*) FROM inettmp WHERE a > '89.225.196.191'::inet;
386
(1 row)
VACUUM inettmp;
VACUUM ANALYZE inettmp;
-- gist_inet_ops lacks a fetch function, so this should not be index-only scan
EXPLAIN (COSTS OFF)
SELECT count(*) FROM inettmp WHERE a = '89.225.196.191'::inet;
QUERY PLAN
--------------------------------------------------------
QUERY PLAN
--------------------------------------------------
Aggregate
-> Bitmap Heap Scan on inettmp
Recheck Cond: (a = '89.225.196.191'::inet)
-> Bitmap Index Scan on inetidx
Index Cond: (a = '89.225.196.191'::inet)
(5 rows)
-> Index Scan using inetidx on inettmp
Index Cond: (a = '89.225.196.191'::inet)
(3 rows)
SELECT count(*) FROM inettmp WHERE a = '89.225.196.191'::inet;
count
@ -88,14 +86,12 @@ CREATE INDEX ON inettmp USING gist (a gist_inet_ops, a inet_ops);
-- likewise here (checks for core planner bug)
EXPLAIN (COSTS OFF)
SELECT count(*) FROM inettmp WHERE a = '89.225.196.191'::inet;
QUERY PLAN
--------------------------------------------------------
QUERY PLAN
----------------------------------------------------
Aggregate
-> Bitmap Heap Scan on inettmp
Recheck Cond: (a = '89.225.196.191'::inet)
-> Bitmap Index Scan on inettmp_a_a1_idx
Index Cond: (a = '89.225.196.191'::inet)
(5 rows)
-> Index Scan using inettmp_a_a1_idx on inettmp
Index Cond: (a = '89.225.196.191'::inet)
(3 rows)
SELECT count(*) FROM inettmp WHERE a = '89.225.196.191'::inet;
count

2
contrib/btree_gist/sql/inet.sql
View File

@ -30,7 +30,7 @@ SELECT count(*) FROM inettmp WHERE a >= '89.225.196.191'::inet;
SELECT count(*) FROM inettmp WHERE a > '89.225.196.191'::inet;
VACUUM inettmp;
VACUUM ANALYZE inettmp;
-- gist_inet_ops lacks a fetch function, so this should not be index-only scan
EXPLAIN (COSTS OFF)