diff --git a/SolarPower/Repository/Implement/StationReportRepository.cs b/SolarPower/Repository/Implement/StationReportRepository.cs
index e76dfe8..fce8a27 100644
--- a/SolarPower/Repository/Implement/StationReportRepository.cs
+++ b/SolarPower/Repository/Implement/StationReportRepository.cs
@@ -54,7 +54,7 @@ namespace SolarPower.Repository.Implement
                     switch(post.FormType)
                     {
                         case 0:
-                            sql = @$"
+                            sql += @$"
                             SET @sql = NULL;
                             SELECT
                                 GROUP_CONCAT(DISTINCT
@@ -100,7 +100,7 @@ namespace SolarPower.Repository.Implement
                         case 1:
                             if(post.SearchType == 2)
                             {
-                                sql = @$"
+                                sql += @$"
                                 SET @sql = NULL;
                                 SELECT
                                   GROUP_CONCAT(DISTINCT
@@ -148,7 +148,7 @@ namespace SolarPower.Repository.Implement
                             {
                                 var times = post.Time.Replace('-', 'a').Replace('/', '-').Replace(" ", "").Split('a');
 
-                                sql = @$"SET @sql = NULL;
+                                sql += @$"SET @sql = NULL;
                                     SELECT
                                       GROUP_CONCAT(DISTINCT
                                         CONCAT('max(case when INVERTERID = ''', INVERTERID, ''' then round(a.KWH, 2) end) ''inv_', right(INVERTERID, 2), '''')
@@ -196,7 +196,7 @@ namespace SolarPower.Repository.Implement
 
                             break;
                         case 3:
-                            sql = @$"
+                            sql += @$"
                                 SET @sql = NULL;
                                 SELECT
                                  GROUP_CONCAT(DISTINCT