Fix typo in comment.

Etsuro Fujita · Etsuro Fujita · commit bf3cef24a319 · 2019-11-27T16:00:46.000+09:00
diff --git a/src/backend/optimizer/util/relnode.c b/src/backend/optimizer/util/relnode.c
@@ -1017,7 +1017,7 @@ build_joinrel_tlist(PlannerInfo *root, RelOptInfo *joinrel,
  *	  join paths made from this pair of sub-relations.  (It will not need to
  *	  be considered further up the join tree.)
  *
- *	  In many case we will find the same RestrictInfos in both input
+ *	  In many cases we will find the same RestrictInfos in both input
  *	  relations' joinlists, so be careful to eliminate duplicates.
  *	  Pointer equality should be a sufficient test for dups, since all
  *	  the various joinlist entries ultimately refer to RestrictInfos

Original file line number	Diff line number	Diff line change
`@@ -1017,7 +1017,7 @@ build_joinrel_tlist(PlannerInfo root, RelOptInfo joinrel,`
`1017`	`1017`	`* join paths made from this pair of sub-relations. (It will not need to`
`1018`	`1018`	`* be considered further up the join tree.)`
`1019`	`1019`	`*`
`1020`		`- * In many case we will find the same RestrictInfos in both input`
	`1020`	`+ * In many cases we will find the same RestrictInfos in both input`
`1021`	`1021`	`* relations' joinlists, so be careful to eliminate duplicates.`
`1022`	`1022`	`* Pointer equality should be a sufficient test for dups, since all`
`1023`	`1023`	`* the various joinlist entries ultimately refer to RestrictInfos`