diff --git a/kernel/sql-federation/core/src/main/java/org/apache/shardingsphere/sqlfederation/compiler/planner/util/SQLFederationFunctionUtils.java b/kernel/sql-federation/core/src/main/java/org/apache/shardingsphere/sqlfederation/compiler/planner/util/SQLFederationFunctionUtils.java
index 4b81671b7c165..b2eb460b9c62f 100644
--- a/kernel/sql-federation/core/src/main/java/org/apache/shardingsphere/sqlfederation/compiler/planner/util/SQLFederationFunctionUtils.java
+++ b/kernel/sql-federation/core/src/main/java/org/apache/shardingsphere/sqlfederation/compiler/planner/util/SQLFederationFunctionUtils.java
@@ -45,6 +45,9 @@ public static void registryUserDefinedFunction(final String schemaName, final Sc
         schemaPlus.add("gs_password_deadline", ScalarFunctionImpl.create(SQLFederationFunctionUtils.class, "gsPasswordDeadline"));
         schemaPlus.add("intervaltonum", ScalarFunctionImpl.create(SQLFederationFunctionUtils.class, "intervalToNum"));
         schemaPlus.add("gs_password_notifyTime", ScalarFunctionImpl.create(SQLFederationFunctionUtils.class, "gsPasswordNotifyTime"));
+        schemaPlus.add("pg_catalog.gs_password_deadline", ScalarFunctionImpl.create(SQLFederationFunctionUtils.class, "gsPasswordDeadline"));
+        schemaPlus.add("pg_catalog.intervaltonum", ScalarFunctionImpl.create(SQLFederationFunctionUtils.class, "intervalToNum"));
+        schemaPlus.add("pg_catalog.gs_password_notifyTime", ScalarFunctionImpl.create(SQLFederationFunctionUtils.class, "gsPasswordNotifyTime"));
         if ("pg_catalog".equalsIgnoreCase(schemaName)) {
             schemaPlus.add("pg_catalog.pg_table_is_visible", ScalarFunctionImpl.create(SQLFederationFunctionUtils.class, "pgTableIsVisible"));
             schemaPlus.add("pg_catalog.pg_get_userbyid", ScalarFunctionImpl.create(SQLFederationFunctionUtils.class, "pgGetUserById"));
diff --git a/proxy/backend/type/opengauss/src/main/java/org/apache/shardingsphere/proxy/backend/opengauss/handler/admin/OpenGaussAdminExecutorCreator.java b/proxy/backend/type/opengauss/src/main/java/org/apache/shardingsphere/proxy/backend/opengauss/handler/admin/OpenGaussAdminExecutorCreator.java
index 27f9dd01ff92e..4db99904965c7 100644
--- a/proxy/backend/type/opengauss/src/main/java/org/apache/shardingsphere/proxy/backend/opengauss/handler/admin/OpenGaussAdminExecutorCreator.java
+++ b/proxy/backend/type/opengauss/src/main/java/org/apache/shardingsphere/proxy/backend/opengauss/handler/admin/OpenGaussAdminExecutorCreator.java
@@ -45,8 +45,14 @@ public final class OpenGaussAdminExecutorCreator implements DatabaseAdminExecuto
     static {
         SYSTEM_CATALOG_QUERY_EXPRESSIONS.add("VERSION()");
         SYSTEM_CATALOG_QUERY_EXPRESSIONS.add("opengauss_version()");
+        SYSTEM_CATALOG_QUERY_EXPRESSIONS.add("gs_password_deadline()");
+        SYSTEM_CATALOG_QUERY_EXPRESSIONS.add("intervaltonum()");
         SYSTEM_CATALOG_QUERY_EXPRESSIONS.add("intervaltonum(gs_password_deadline())");
         SYSTEM_CATALOG_QUERY_EXPRESSIONS.add("gs_password_notifytime()");
+        SYSTEM_CATALOG_QUERY_EXPRESSIONS.add("pg_catalog.gs_password_deadline()");
+        SYSTEM_CATALOG_QUERY_EXPRESSIONS.add("pg_catalog.intervaltonum()");
+        SYSTEM_CATALOG_QUERY_EXPRESSIONS.add("pg_catalog.intervaltonum(pg_catalog.gs_password_deadline())");
+        SYSTEM_CATALOG_QUERY_EXPRESSIONS.add("pg_catalog.gs_password_notifytime()");
         SYSTEM_CATALOG_TABLES.add("pg_class");
         SYSTEM_CATALOG_TABLES.add("pg_namespace");
         SYSTEM_CATALOG_TABLES.add("pg_database");