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author | Tom Lane <tgl@sss.pgh.pa.us> | 2005-10-25 20:30:35 +0000 |
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committer | Tom Lane <tgl@sss.pgh.pa.us> | 2005-10-25 20:30:35 +0000 |
commit | 15b46f121f4c08fad4bc1900aa7e6e3370025033 (patch) | |
tree | 57af567d7390b3311bea697405babff1fd76a713 /src/backend/tcop/postgres.c | |
parent | ea19eb999d7121aba8eefce98051c7cafa376d6d (diff) | |
download | postgresql-15b46f121f4c08fad4bc1900aa7e6e3370025033.tar.gz postgresql-15b46f121f4c08fad4bc1900aa7e6e3370025033.zip |
Fix longstanding bug that would sometimes let the planner generate a bad plan
for an outer join; symptom is bogus error "RIGHT JOIN is only supported with
merge-joinable join conditions". Problem was that select_mergejoin_clauses
did its tests in the wrong order. We need to force left join not right join
for a merge join when there are non-mergeable join clauses; but the test for
this only accounted for mergejoinability of the clause operator, and not
whether the left and right Vars were of the proper relations. Per report
from Jean-Pierre Pelletier.
Diffstat (limited to 'src/backend/tcop/postgres.c')
0 files changed, 0 insertions, 0 deletions