diff --git a/dataset.go b/dataset.go
index deab701..b1864d6 100644
--- a/dataset.go
+++ b/dataset.go
@@ -13,6 +13,9 @@ type DataSet struct {
 
 func (this *DataSet) Next() bool {
 	ret := this.rows.Next()
+	if !ret {
+		return ret
+	}
 	this.GetColumns()
 	this.values = []interface{}{}
 	for i := 0; i < len(this.columns); i++ {