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420c166163
In commit 915b703e1
I gave get_agg_clause_costs() the responsibility of
marking Aggref nodes with the appropriate aggtranstype. I failed to notice
that where it was being called from, it might see only a subset of the
Aggref nodes that were in the original targetlist. Specifically, if there
are duplicate aggregate calls in the tlist, either make_sort_input_target
or make_window_input_target might put just a single instance into the
grouping_target, and then only that instance would get marked. Fix by
moving the call back into grouping_planner(), before we start building
assorted PathTargets from the query tlist. Per report from Stefan Huehner.
Report: <20160702131056.GD3165@huehner.biz>
102 lines
3.1 KiB
SQL
102 lines
3.1 KiB
SQL
--
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-- LIMIT
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-- Check the LIMIT/OFFSET feature of SELECT
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--
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SELECT ''::text AS two, unique1, unique2, stringu1
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FROM onek WHERE unique1 > 50
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ORDER BY unique1 LIMIT 2;
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SELECT ''::text AS five, unique1, unique2, stringu1
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FROM onek WHERE unique1 > 60
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ORDER BY unique1 LIMIT 5;
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SELECT ''::text AS two, unique1, unique2, stringu1
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FROM onek WHERE unique1 > 60 AND unique1 < 63
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ORDER BY unique1 LIMIT 5;
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SELECT ''::text AS three, unique1, unique2, stringu1
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FROM onek WHERE unique1 > 100
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ORDER BY unique1 LIMIT 3 OFFSET 20;
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SELECT ''::text AS zero, unique1, unique2, stringu1
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FROM onek WHERE unique1 < 50
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ORDER BY unique1 DESC LIMIT 8 OFFSET 99;
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SELECT ''::text AS eleven, unique1, unique2, stringu1
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FROM onek WHERE unique1 < 50
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ORDER BY unique1 DESC LIMIT 20 OFFSET 39;
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SELECT ''::text AS ten, unique1, unique2, stringu1
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FROM onek
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ORDER BY unique1 OFFSET 990;
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SELECT ''::text AS five, unique1, unique2, stringu1
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FROM onek
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ORDER BY unique1 OFFSET 990 LIMIT 5;
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SELECT ''::text AS five, unique1, unique2, stringu1
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FROM onek
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ORDER BY unique1 LIMIT 5 OFFSET 900;
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-- Stress test for variable LIMIT in conjunction with bounded-heap sorting
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SELECT
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(SELECT n
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FROM (VALUES (1)) AS x,
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(SELECT n FROM generate_series(1,10) AS n
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ORDER BY n LIMIT 1 OFFSET s-1) AS y) AS z
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FROM generate_series(1,10) AS s;
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--
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-- Test behavior of volatile and set-returning functions in conjunction
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-- with ORDER BY and LIMIT.
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--
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create temp sequence testseq;
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explain (verbose, costs off)
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select unique1, unique2, nextval('testseq')
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from tenk1 order by unique2 limit 10;
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select unique1, unique2, nextval('testseq')
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from tenk1 order by unique2 limit 10;
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select currval('testseq');
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explain (verbose, costs off)
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select unique1, unique2, nextval('testseq')
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from tenk1 order by tenthous limit 10;
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select unique1, unique2, nextval('testseq')
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from tenk1 order by tenthous limit 10;
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select currval('testseq');
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explain (verbose, costs off)
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select unique1, unique2, generate_series(1,10)
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from tenk1 order by unique2 limit 7;
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select unique1, unique2, generate_series(1,10)
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from tenk1 order by unique2 limit 7;
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explain (verbose, costs off)
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select unique1, unique2, generate_series(1,10)
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from tenk1 order by tenthous limit 7;
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select unique1, unique2, generate_series(1,10)
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from tenk1 order by tenthous limit 7;
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-- use of random() is to keep planner from folding the expressions together
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explain (verbose, costs off)
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select generate_series(0,2) as s1, generate_series((random()*.1)::int,2) as s2;
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select generate_series(0,2) as s1, generate_series((random()*.1)::int,2) as s2;
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explain (verbose, costs off)
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select generate_series(0,2) as s1, generate_series((random()*.1)::int,2) as s2
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order by s2 desc;
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select generate_series(0,2) as s1, generate_series((random()*.1)::int,2) as s2
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order by s2 desc;
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-- test for failure to set all aggregates' aggtranstype
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explain (verbose, costs off)
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select sum(tenthous) as s1, sum(tenthous) + random()*0 as s2
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from tenk1 group by thousand order by thousand limit 3;
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select sum(tenthous) as s1, sum(tenthous) + random()*0 as s2
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from tenk1 group by thousand order by thousand limit 3;
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