[DS-6433][Improvement] find one command optimize without mybatis-plus (#6434)

Co-authored-by: caishunfeng <534328519@qq.com>

dolphinscheduler-dao/src/main/java/org/apache/dolphinscheduler/dao/mapper/CommandMapper.java

@@ -56,6 +56,6 @@ public interface CommandMapper extends BaseMapper<Command> {
      * query command page
      * @return
      */
-    IPage<Command> queryCommandPage(IPage<Command> page);
+    List<Command> queryCommandPage(@Param("limit") int limit, @Param("offset") int offset);
 
 }

dolphinscheduler-dao/src/main/resources/org/apache/dolphinscheduler/dao/mapper/CommandMapper.xml

@@ -46,6 +46,7 @@
     <select id="queryCommandPage" resultType="org.apache.dolphinscheduler.dao.entity.Command">
         select *
         from t_ds_command
-        order by update_time asc
+        order by process_instance_priority, id asc
+        limit #{limit} offset #{offset}
     </select>
 </mapper>

dolphinscheduler-service/src/main/java/org/apache/dolphinscheduler/service/process/ProcessService.java

@@ -308,8 +308,7 @@ public class ProcessService {
      * @return
      */
     public List<Command> findCommandPage(int pageSize, int pageNumber) {
-        Page<Command> commandPage = new Page<>(pageNumber, pageSize);
+        return commandMapper.queryCommandPage(pageSize, pageNumber * pageSize);
-        return commandMapper.queryCommandPage(commandPage).getRecords();
     }
 
     /**

sql/dolphinscheduler_h2.sql

@@ -327,7 +327,8 @@ CREATE TABLE t_ds_command
     process_instance_priority int(11) DEFAULT NULL,
     worker_group              varchar(64),
     environment_code          bigint(20) DEFAULT '-1',
-    PRIMARY KEY (id)
+    PRIMARY KEY (id),
+    KEY priority_id_index (process_instance_priority, id)
 );
 
 -- ----------------------------

sql/dolphinscheduler_mysql.sql

@@ -333,7 +333,8 @@ CREATE TABLE `t_ds_command` (
   `worker_group` varchar(64)  COMMENT 'worker group',
   `environment_code` bigint(20) DEFAULT '-1' COMMENT 'environment code',
   `dry_run` int NULL DEFAULT 0 COMMENT 'dry run flag：0 normal, 1 dry run',
-  PRIMARY KEY (`id`)
+  PRIMARY KEY (`id`),
+  KEY `priority_id_index` (`process_instance_priority`,`id`) USING BTREE
 ) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
 
 -- ----------------------------

sql/dolphinscheduler_postgre.sql

@@ -258,6 +258,8 @@ CREATE TABLE t_ds_command (
   PRIMARY KEY (id)
 ) ;
 
+create index priority_id_index on t_ds_command (process_instance_priority,id);
+
 --
 -- Table structure for table t_ds_datasource
 --