diff --git a/dao/etl/implments/DataTableHead.dao.impl.go b/dao/etl/implments/DataTableHead.dao.impl.go
index a9323e9..38d813a 100644
--- a/dao/etl/implments/DataTableHead.dao.impl.go
+++ b/dao/etl/implments/DataTableHead.dao.impl.go
@@ -207,7 +207,7 @@ func (impl *DataTableHeadDAOImplement) Select(predicates []grmi.Predicate, order
 func (impl *DataTableHeadDAOImplement) SelectAndPaging(paging *grmi.Paging, predicates []grmi.Predicate, orderByFields []grmi.Field) (grmi.PagingResult, error) {
 
 	parameters := []interface{}{}
-	where := "1 + 1 "
+	where := "1 = 1 "
 
 	session := impl.session.Table(impl.meta.TableName)
 	if predicates != nil {
@@ -225,10 +225,14 @@ func (impl *DataTableHeadDAOImplement) SelectAndPaging(paging *grmi.Paging, pred
 		return grmi.EmptyPagingResult, err
 	}
 
-	orderBy := " order by "
+	orderBy := ""
 	if orderByFields != nil {
-		for _, field := range orderByFields {
-			orderBy += ", " + field.ColumnName
+		orderBy += " order by "
+		for index, field := range orderByFields {
+			if index != 0 {
+				orderBy += ", "
+			}
+			orderBy += field.ColumnName
 		}
 	}
 	parameters = append(parameters, paging.Offset(), paging.Size)
diff --git a/dao/etl/implments/DataTableLst.dao.impl.go b/dao/etl/implments/DataTableLst.dao.impl.go
index 4bb9266..395eb8a 100644
--- a/dao/etl/implments/DataTableLst.dao.impl.go
+++ b/dao/etl/implments/DataTableLst.dao.impl.go
@@ -207,7 +207,7 @@ func (impl *DataTableLstDAOImplement) Select(predicates []grmi.Predicate, orderB
 func (impl *DataTableLstDAOImplement) SelectAndPaging(paging *grmi.Paging, predicates []grmi.Predicate, orderByFields []grmi.Field) (grmi.PagingResult, error) {
 
 	parameters := []interface{}{}
-	where := "1 + 1 "
+	where := "1 = 1 "
 
 	session := impl.session.Table(impl.meta.TableName)
 	if predicates != nil {
diff --git a/dao/etl/implments/TaskDSTime.dao.impl.go b/dao/etl/implments/TaskDSTime.dao.impl.go
index 4d93ee5..2b7a1ee 100644
--- a/dao/etl/implments/TaskDSTime.dao.impl.go
+++ b/dao/etl/implments/TaskDSTime.dao.impl.go
@@ -207,7 +207,7 @@ func (impl *TaskDSTimeDAOImplement) Select(predicates []grmi.Predicate, orderByF
 func (impl *TaskDSTimeDAOImplement) SelectAndPaging(paging *grmi.Paging, predicates []grmi.Predicate, orderByFields []grmi.Field) (grmi.PagingResult, error) {
 
 	parameters := []interface{}{}
-	where := "1 + 1 "
+	where := "1 = 1 "
 
 	session := impl.session.Table(impl.meta.TableName)
 	if predicates != nil {