| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> |
| Cc: | PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: bug in explain - core dump |
| Date: | 2010-10-25 18:26:27 |
| Message-ID: | 19442.1288031187@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> writes:
> DROP TABLE IF EXISTS foo;
> CREATE TABLE foo(a int, b int);
> INSERT INTO foo SELECT (random()*10000)::int, (random()*10)::int from generate_series(1,100000);
> ANALYZE foo;
> CREATE INDEX ON foo(a,b);
> CREATE INDEX ON foo(b,a);
> EXPLAIN SELECT max(a), b
> FROM foo, generate_series(0,30) g(v)
> WHERE a = (SELECT max(a) FROM foo WHERE b = v)
> GROUP BY b;
Fixed, thanks.
regards, tom lane
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