2011/12/4 Tom Lane <t...@sss.pgh.pa.us>: > Pavel Stehule <pavel.steh...@gmail.com> writes: >> #3 0x083a1dfe in ExceptionalCondition (conditionName=0x8505474 >> "!(innerstartsel <= innerendsel)", errorType=0x83db178 >> "FailedAssertion", fileName=0x8505140 "costsize.c", lineNumber=1937) >> at assert.c:57 > > [ scratches head ... ] Given that it got past the previous assertions, > surely that ought to be impossible. Could we see the values of > cost_mergejoin's local variables, please?
It is strange when I put a fprintf(stderr, "const literal") to exactly before or somewhere after assertion, then assertion is ok. Without fprintf assertion fails again it looks like gcc bug - gcc 4.5.1 20100924 (Red Hat 4.5.1) It was configured just with --enable-debug and --enable-cassert when I put elog before calculation outerstartsel, innerstartsel,outerendsel and innerendsel then it fails the output is (last elog result) outer_skip_rows: 0.0 inner_skip_rows: 1.0 outer_rows: 208.000 inner_rows: 1.00000 when I append elog to show selectivity, then it work again - related selectivity is outerstartsel: 0.000 outerendsel: 1.000 innerstartsel: 0.166667 innerendsel: 0.166667 Regards Pavel Stehule > > regards, tom lane -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
