diff --git a/sql/dolphinscheduler_mysql.sql b/sql/dolphinscheduler_mysql.sql
index 55dcf1c8fe..51ea20fbe4 100644
--- a/sql/dolphinscheduler_mysql.sql
+++ b/sql/dolphinscheduler_mysql.sql
@@ -305,7 +305,7 @@ CREATE TABLE `t_ds_alertgroup`(
   `create_time`    datetime     DEFAULT NULL COMMENT 'create time',
   `update_time`    datetime     DEFAULT NULL COMMENT 'update time',
   PRIMARY KEY (`id`),
-  UNIQUE KEY `t_ds_alertgroup_name_UN` (`group_name`)
+  UNIQUE KEY `t_ds_alertgroup_name_un` (`group_name`)
 ) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
 
 -- ----------------------------
@@ -352,7 +352,7 @@ CREATE TABLE `t_ds_datasource` (
   `create_time` datetime NOT NULL COMMENT 'create time',
   `update_time` datetime DEFAULT NULL COMMENT 'update time',
   PRIMARY KEY (`id`),
-  UNIQUE KEY `t_ds_datasource_name_UN` (`name`, `type`)
+  UNIQUE KEY `t_ds_datasource_name_un` (`name`, `type`)
 ) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
 
 -- ----------------------------
diff --git a/sql/dolphinscheduler_postgre.sql b/sql/dolphinscheduler_postgre.sql
index cd5dce969c..d97e4e964d 100644
--- a/sql/dolphinscheduler_postgre.sql
+++ b/sql/dolphinscheduler_postgre.sql
@@ -209,7 +209,7 @@ CREATE TABLE t_ds_alertgroup(
   create_time    timestamp    DEFAULT NULL,
   update_time    timestamp    DEFAULT NULL,
   PRIMARY KEY (id),
-  CONSTRAINT t_ds_alertgroup_name_UN UNIQUE (group_name)
+  CONSTRAINT t_ds_alertgroup_name_un UNIQUE (group_name)
 ) ;
 
 --
@@ -250,7 +250,7 @@ CREATE TABLE t_ds_datasource (
   create_time timestamp NOT NULL ,
   update_time timestamp DEFAULT NULL ,
   PRIMARY KEY (id),
-  CONSTRAINT t_ds_datasource_name_UN UNIQUE (name, type)
+  CONSTRAINT t_ds_datasource_name_un UNIQUE (name, type)
 ) ;
 
 --
diff --git a/sql/upgrade/1.4.0_schema/mysql/dolphinscheduler_ddl.sql b/sql/upgrade/1.4.0_schema/mysql/dolphinscheduler_ddl.sql
index eccd683bfa..098a3c4fff 100644
--- a/sql/upgrade/1.4.0_schema/mysql/dolphinscheduler_ddl.sql
+++ b/sql/upgrade/1.4.0_schema/mysql/dolphinscheduler_ddl.sql
@@ -581,9 +581,9 @@ BEGIN
     IF NOT EXISTS (SELECT 1 FROM information_schema.STATISTICS
                    WHERE TABLE_NAME='t_ds_alertgroup'
                      AND TABLE_SCHEMA=(SELECT DATABASE())
-                     AND INDEX_NAME ='t_ds_alertgroup_name_UN')
+                     AND INDEX_NAME ='t_ds_alertgroup_name_un')
     THEN
-        ALTER TABLE t_ds_alertgroup ADD UNIQUE KEY `t_ds_alertgroup_name_UN` (`group_name`);
+        ALTER TABLE t_ds_alertgroup ADD UNIQUE KEY `t_ds_alertgroup_name_un` (`group_name`);
     END IF;
 END;
 
@@ -598,12 +598,12 @@ drop PROCEDURE if EXISTS uc_dolphin_T_t_ds_datasource_A_add_UN_datasourceName;
 delimiter d//
 CREATE PROCEDURE uc_dolphin_T_t_ds_datasource_A_add_UN_datasourceName()
 BEGIN
-    IF NOT EXISTS (SELECT 1 FROM information_schema.COLUMNS
+    IF NOT EXISTS (SELECT 1 FROM information_schema.STATISTICS
                    WHERE TABLE_NAME='t_ds_datasource'
                      AND TABLE_SCHEMA=(SELECT DATABASE())
-                     AND COLUMN_NAME ='t_ds_datasource_name_UN')
+                     AND INDEX_NAME ='t_ds_datasource_name_un')
     THEN
-        ALTER TABLE t_ds_datasource ADD UNIQUE KEY `t_ds_datasource_name_UN` (`name`, `type`);
+        ALTER TABLE t_ds_datasource ADD UNIQUE KEY `t_ds_datasource_name_un` (`name`, `type`);
     END IF;
 END;
 
diff --git a/sql/upgrade/1.4.0_schema/postgresql/dolphinscheduler_ddl.sql b/sql/upgrade/1.4.0_schema/postgresql/dolphinscheduler_ddl.sql
index d8d7db3ba6..de4cbc3506 100644
--- a/sql/upgrade/1.4.0_schema/postgresql/dolphinscheduler_ddl.sql
+++ b/sql/upgrade/1.4.0_schema/postgresql/dolphinscheduler_ddl.sql
@@ -611,9 +611,9 @@ CREATE OR REPLACE FUNCTION uc_dolphin_T_t_ds_alertgroup_A_add_UN_groupName() RET
 BEGIN
     IF NOT EXISTS (SELECT 1 FROM pg_stat_all_indexes
           WHERE relname='t_ds_alertgroup'
-                            AND indexrelname ='t_ds_alertgroup_name_UN')
+                            AND indexrelname ='t_ds_alertgroup_name_un')
       THEN
-         ALTER TABLE t_ds_alertgroup ADD CONSTRAINT t_ds_alertgroup_name_UN UNIQUE (group_name);
+         ALTER TABLE t_ds_alertgroup ADD CONSTRAINT t_ds_alertgroup_name_un UNIQUE (group_name);
        END IF;
 END;
 $$ LANGUAGE plpgsql;
@@ -629,9 +629,9 @@ CREATE OR REPLACE FUNCTION uc_dolphin_T_t_ds_datasource_A_add_UN_datasourceName(
 BEGIN
     IF NOT EXISTS (SELECT 1 FROM pg_stat_all_indexes
           WHERE relname='t_ds_datasource'
-                            AND indexrelname ='t_ds_datasource_name_UN')
+                            AND indexrelname ='t_ds_datasource_name_un')
       THEN
-         ALTER TABLE t_ds_datasource ADD CONSTRAINT t_ds_datasource_name_UN UNIQUE (name, type);
+         ALTER TABLE t_ds_datasource ADD CONSTRAINT t_ds_datasource_name_un UNIQUE (name, type);
        END IF;
 END;
 $$ LANGUAGE plpgsql;