diff options
Diffstat (limited to 'contrib/postgres_fdw/postgres_fdw.c')
| -rw-r--r-- | contrib/postgres_fdw/postgres_fdw.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/contrib/postgres_fdw/postgres_fdw.c b/contrib/postgres_fdw/postgres_fdw.c index 4d17272674..4e31b8e40d 100644 --- a/contrib/postgres_fdw/postgres_fdw.c +++ b/contrib/postgres_fdw/postgres_fdw.c @@ -4063,19 +4063,20 @@ foreign_join_ok(PlannerInfo *root, RelOptInfo *joinrel, JoinType jointype, /* * Pull the other remote conditions from the joining relations into join - * clauses or other remote clauses (remote_conds) of this relation wherever - * possible. This avoids building subqueries at every join step, which is - * not currently supported by the deparser logic. + * clauses or other remote clauses (remote_conds) of this relation + * wherever possible. This avoids building subqueries at every join step, + * which is not currently supported by the deparser logic. * * For an inner join, clauses from both the relations are added to the - * other remote clauses. For LEFT and RIGHT OUTER join, the clauses from the - * outer side are added to remote_conds since those can be evaluated after - * the join is evaluated. The clauses from inner side are added to the - * joinclauses, since they need to evaluated while constructing the join. + * other remote clauses. For LEFT and RIGHT OUTER join, the clauses from + * the outer side are added to remote_conds since those can be evaluated + * after the join is evaluated. The clauses from inner side are added to + * the joinclauses, since they need to evaluated while constructing the + * join. * - * For a FULL OUTER JOIN, the other clauses from either relation can not be - * added to the joinclauses or remote_conds, since each relation acts as an - * outer relation for the other. Consider such full outer join as + * For a FULL OUTER JOIN, the other clauses from either relation can not + * be added to the joinclauses or remote_conds, since each relation acts + * as an outer relation for the other. Consider such full outer join as * unshippable because of the reasons mentioned above in this comment. * * The joining sides can not have local conditions, thus no need to test |