diff --git a/esua-epdc/kettle-Code/dcp_job/epmet_gov_issue/issue.ktr b/esua-epdc/kettle-Code/dcp_job/epmet_gov_issue/issue.ktr
index 832d07e13..4ad69422f 100644
--- a/esua-epdc/kettle-Code/dcp_job/epmet_gov_issue/issue.ktr
+++ b/esua-epdc/kettle-Code/dcp_job/epmet_gov_issue/issue.ktr
@@ -760,7 +760,7 @@ issue.GRID_ID ,
 REPLACE(issue.PARENT_DEPT_IDS,',',':') ORG_ID_PATH,
 SUBSTRING_INDEX(issue.PARENT_DEPT_IDS,',',-1) ORG_ID,
 issue.CREATED_TIME DECIDED_TIME, 
-(case when issue.ISSUE_STATE = 4 then item.CREATED_TIME else '' end) SHIFTED_TIME,
+(case when issue.ISSUE_STATE = 4 then item.CREATED_TIME else null end) SHIFTED_TIME,
 hdl.CREATED_TIME CLOSED_TIME,
 issue.DEL_FLAG,
 issue.REVISION,