添加项目文件。

SamplePre.DAL/DAL/SystemDal.cs

@@ -0,0 +1,59 @@
+using Dapper;
+using DataDAL.DBContext;
+using Models.Models;
+using SamplePre.DAL.DBContext;
+using SamplePre.Models.Ext;
+using SamplePre.Models.Models;
+using SqlSugar;
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SamplePre.DAL
+{
+    public class SystemDal
+    {
+        /// <summary>
+        /// 获取用户数据
+        /// </summary>
+        /// <param name="standId"></param>
+        /// <returns></returns>
+        public List<config_user_ext> QueryUserData()
+        {
+            using (IDbConnection dbConnection = new DapperDBContext().Connection)
+            {
+                dbConnection.Open();
+
+                string querySql = @"
+                                    SELECT a.*,b.all_role_names from config_user a
+                                                LEFT JOIN (
+
+                                                                SELECT
+                                                                    x.user_id,
+                                                                   
+                                                                    GROUP_CONCAT(x.role_id SEPARATOR ',') AS all_role_ids,
+                                                                    
+                                                                    GROUP_CONCAT(y.`name` SEPARATOR ',') AS all_role_names
+                                                                FROM
+                                                                    config_user_role x
+                                                                    LEFT JOIN config_role y ON x.role_id = y.id
+                                                              
+                                                                GROUP BY
+                                                                    x.user_id
+		
+		                                                ) b on a.id = b.user_id
+                                    ";
+
+                List<config_user_ext> data = dbConnection.Query<config_user_ext>(querySql).ToList();
+
+                return data;
+
+            }
+        }
+
+
+    }
+}