diff --git a/src/common/backend/parser/parse_expr.cpp b/src/common/backend/parser/parse_expr.cpp
index 722db712d..849b07fb3 100644
--- a/src/common/backend/parser/parse_expr.cpp
+++ b/src/common/backend/parser/parse_expr.cpp
@@ -3186,7 +3186,7 @@ static Node* transformSequenceFuncCall(ParseState* pstate, Node* field1, Node* f
     if (field1 != NULL) {
         StringInfoData buf;
         initStringInfo(&buf);
-        appendStringInfo(&buf, "%s.%s", strVal(field1), strVal(field2));
+        appendStringInfo(&buf, "\"%s\".\"%s\"", strVal(field1), strVal(field2));
         arg = makeString(buf.data);
     } else {
         arg = (Value*)field2;
diff --git a/src/test/regress/expected/single_node_sequence.out b/src/test/regress/expected/single_node_sequence.out
index 94ab62332..152eda5e8 100644
--- a/src/test/regress/expected/single_node_sequence.out
+++ b/src/test/regress/expected/single_node_sequence.out
@@ -429,3 +429,33 @@ DROP USER seq_user;
 DROP SEQUENCE seq;
 drop sequence "QUOTATION_SEQ";
 drop sequence no_quotation_seq;
+-- uppercase sequence name
+-- public schema
+create table "T1" (c1 int, c2 int);
+create sequence "SEQ1" increment by 1 maxvalue 9223372036854775807 start with 3 cache 20;
+NOTICE:  Not advised to use MAXVALUE or MINVALUE together with CACHE.
+DETAIL:  If CACHE is defined, some sequence values may be wasted, causing available sequence numbers to be less than expected.
+insert into "T1" values(128, "SEQ1".nextval);
+select * from "T1";
+ c1  | c2 
+-----+----
+ 128 |  3
+(1 row)
+
+drop sequence "SEQ1";
+drop table "T1";
+-- new schema
+create schema if not exists "NEW_SCHEMA";
+create table "NEW_SCHEMA"."T1" (c1 int, c2 int);
+create sequence "NEW_SCHEMA"."SEQ1" increment by 1 maxvalue 9223372036854775807 start with 3 cache 20;
+NOTICE:  Not advised to use MAXVALUE or MINVALUE together with CACHE.
+DETAIL:  If CACHE is defined, some sequence values may be wasted, causing available sequence numbers to be less than expected.
+insert into "NEW_SCHEMA"."T1" values (128, "NEW_SCHEMA"."SEQ1".nextval);
+select * from "NEW_SCHEMA"."T1";
+ c1  | c2 
+-----+----
+ 128 |  3
+(1 row)
+
+drop sequence "NEW_SCHEMA"."SEQ1";
+drop table "NEW_SCHEMA"."T1";
diff --git a/src/test/regress/sql/single_node_sequence.sql b/src/test/regress/sql/single_node_sequence.sql
index 0c70040bd..12b315523 100644
--- a/src/test/regress/sql/single_node_sequence.sql
+++ b/src/test/regress/sql/single_node_sequence.sql
@@ -192,3 +192,21 @@ DROP USER seq_user;
 DROP SEQUENCE seq;
 drop sequence "QUOTATION_SEQ";
 drop sequence no_quotation_seq;
+
+-- uppercase sequence name
+-- public schema
+create table "T1" (c1 int, c2 int);
+create sequence "SEQ1" increment by 1 maxvalue 9223372036854775807 start with 3 cache 20;
+insert into "T1" values(128, "SEQ1".nextval);
+select * from "T1";
+drop sequence "SEQ1";
+drop table "T1";
+
+-- new schema
+create schema if not exists "NEW_SCHEMA";
+create table "NEW_SCHEMA"."T1" (c1 int, c2 int);
+create sequence "NEW_SCHEMA"."SEQ1" increment by 1 maxvalue 9223372036854775807 start with 3 cache 20;
+insert into "NEW_SCHEMA"."T1" values (128, "NEW_SCHEMA"."SEQ1".nextval);
+select * from "NEW_SCHEMA"."T1";
+drop sequence "NEW_SCHEMA"."SEQ1";
+drop table "NEW_SCHEMA"."T1";