fix(用例管理): 用例前后置列表返回num

backend/services/case-management/src/main/java/io/metersphere/functional/dto/FunctionalCaseRelationshipDTO.java

@@ -30,4 +30,7 @@ public class FunctionalCaseRelationshipDTO implements Serializable {
     @Schema(description = "创建人名称")
     private String userName;
 
+    @Schema(description = "num")
+    private String num;
+
 }

backend/services/case-management/src/main/java/io/metersphere/functional/mapper/ExtFunctionalCaseRelationshipEdgeMapper.xml

@@ -22,21 +22,22 @@
             fc.NAME name,
             fc.version_id versionId,
             pv.`name` versionName,
-            u.`name` userName
+            u.`name` userName,
+            fc.num
         FROM
             functional_case_relationship_edge fcre
                 <if test="request.type != null and request.type != ''">
                     <choose>
                         <when test="request.type == 'PRE'">
-                            INNER JOIN functional_case fc ON fcre.target_id = fc.id
+                            LEFT JOIN functional_case fc ON fcre.target_id = fc.id
                         </when>
                         <when test="request.type == 'POST'">
-                            INNER JOIN functional_case fc ON fcre.source_id = fc.id
+                            LEFT JOIN functional_case fc ON fcre.source_id = fc.id
                         </when>
                     </choose>
                 </if>
-                INNER JOIN `user` u ON fc.create_user = u.id
-                INNER JOIN project_version pv ON pv.id = fc.version_id
+                LEFT JOIN `user` u ON fc.create_user = u.id
+                LEFT JOIN project_version pv ON pv.id = fc.version_id
         WHERE
         fc.deleted = false
         <if test="request.type != null and request.type != ''">