diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index d27abe554cc..17035fb4d15 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -15973,6 +15973,10 @@ a_expr:		c_expr									{ $$ = $1; }
 				{ $$ = (Node *) makeSimpleA_Expr(AEXPR_OP, ">=", $1, $3, @2); }
 			| a_expr NOT_EQUALS a_expr
 				{ $$ = (Node *) makeSimpleA_Expr(AEXPR_OP, "<>", $1, $3, @2); }
+			| RIGHT_ARROW a_expr
+				{ $$ = (Node *) makeSimpleA_Expr(AEXPR_OP, "->", NULL, $2, @1); }
+			| '|' a_expr
+				{ $$ = (Node *) makeSimpleA_Expr(AEXPR_OP, "|", NULL, $2, @1); }
 			| a_expr RIGHT_ARROW a_expr
 				{ $$ = (Node *) makeSimpleA_Expr(AEXPR_OP, "->", $1, $3, @2); }
 			| a_expr '|' a_expr
@@ -16457,6 +16461,10 @@ b_expr:		c_expr
 				{ $$ = (Node *) makeSimpleA_Expr(AEXPR_OP, ">=", $1, $3, @2); }
 			| b_expr NOT_EQUALS b_expr
 				{ $$ = (Node *) makeSimpleA_Expr(AEXPR_OP, "<>", $1, $3, @2); }
+			| RIGHT_ARROW b_expr
+				{ $$ = (Node *) makeSimpleA_Expr(AEXPR_OP, "->", NULL, $2, @1); }
+			| '|' b_expr
+				{ $$ = (Node *) makeSimpleA_Expr(AEXPR_OP, "|", NULL, $2, @1); }
 			| b_expr RIGHT_ARROW b_expr
 				{ $$ = (Node *) makeSimpleA_Expr(AEXPR_OP, "->", $1, $3, @2); }
 			| b_expr '|' b_expr