Fix documentation error in commit 8703059c6b55c427100e00a09f66534b6ccbfaa1.

Etsuro Fujita spotted a thinko in the README commentary.

diff --git a/src/backend/optimizer/README b/src/backend/optimizer/README
index 4ec9612a80915ad7ef2accb606399c2f04d2f875..fe34730c424c23500703d08a3c300bef9098622c 100644 (file)
--- a/src/backend/optimizer/README
+++ b/src/backend/optimizer/README
@@ -254,7 +254,7 @@ lower leftjoin has min LHS of {B} and min RHS of {C,D}.  Given such
 information, join_is_legal would think it's okay to associate the upper
 join into the lower join's RHS, transforming the query to
    B leftjoin (A leftjoin (C innerjoin D) on Pa) on (Pbcd)
-which yields totally wrong answers.  We prevent that by forcing the min LHS
+which yields totally wrong answers.  We prevent that by forcing the min RHS
 for the upper join to include B.  This is perhaps overly restrictive, but
 such cases don't arise often so it's not clear that it's worth developing a
 more complicated system.