diff options
Diffstat (limited to 'src/include/nodes/pathnodes.h')
| -rw-r--r-- | src/include/nodes/pathnodes.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h index 23dd671bf4e..c17b53f7adb 100644 --- a/src/include/nodes/pathnodes.h +++ b/src/include/nodes/pathnodes.h @@ -2430,6 +2430,15 @@ typedef struct LimitPath * conditions. Possibly we should rename it to reflect that meaning? But * see also the comments for RINFO_IS_PUSHED_DOWN, below.) * + * There is also an incompatible_relids field, which is a set of outer-join + * relids above which we cannot evaluate the clause (because they might null + * Vars it uses that should not be nulled yet). In principle this could be + * filled in any RestrictInfo as the set of OJ relids that appear above the + * clause and null Vars that it uses. In practice we only bother to populate + * it for "clone" clauses, as it's currently only needed to prevent multiple + * clones of the same clause from being accepted for evaluation at the same + * join level. + * * There is also an outer_relids field, which is NULL except for outer join * clauses; for those, it is the set of relids on the outer side of the * clause's outer join. (These are rels that the clause cannot be applied to @@ -2537,6 +2546,9 @@ typedef struct RestrictInfo /* The set of relids required to evaluate the clause: */ Relids required_relids; + /* Relids above which we cannot evaluate the clause (see comment above) */ + Relids incompatible_relids; + /* If an outer-join clause, the outer-side relations, else NULL: */ Relids outer_relids; |