diff --git a/database/mysql.go b/database/mysql.go
index f3a48c06ce3a1af8f7a33d5a4b0ae16d03a1a7af..ef3ab9cb6dde80672656290986879b81eae2a99a 100644
--- a/database/mysql.go
+++ b/database/mysql.go
@@ -23,6 +23,7 @@ import (
 	"regexp"
 	"strconv"
 	"strings"
+	"time"
 
 	"github.com/XiaoMi/soar/common"
 
@@ -287,3 +288,17 @@ func (db *Connector) dangerousQuery(query string) bool {
 
 	return false
 }
+
+// Sandard MySQL datetime format
+const TimeFormat = "2006-01-02 15:04:05.000000000"
+
+// TimeString returns t as string in MySQL format Converts time.Time zero to MySQL zero.
+func TimeString(t time.Time) string {
+	if t.IsZero() {
+		return "0000-00-00 00:00:00"
+	}
+	if t.Nanosecond() == 0 {
+		return t.Format(TimeFormat[:19])
+	}
+	return t.Format(TimeFormat)
+}
diff --git a/database/sampling.go b/database/sampling.go
index 51a98cb25fb7b5e1ecdedbe0cf98d90d846e8a68..0d63958116e00e8279aa52545eca4f75dabc897e 100644
--- a/database/sampling.go
+++ b/database/sampling.go
@@ -23,7 +23,6 @@ import (
 	"time"
 
 	"github.com/XiaoMi/soar/common"
-	"github.com/ziutek/mymysql/mysql"
 )
 
 /*--------------------
@@ -135,7 +134,7 @@ func (db *Connector) startSampling(onlineConn *sql.DB, database, table string, w
 				case "TIMESTAMP", "DATETIME":
 					t, err := time.Parse(time.RFC3339, string(val))
 					common.LogIfWarn(err, "")
-					values = append(values, fmt.Sprintf(`"%s"`, mysql.TimeString(t)))
+					values = append(values, fmt.Sprintf(`"%s"`, TimeString(t)))
 				default:
 					values = append(values, fmt.Sprintf(`unhex("%s")`, fmt.Sprintf("%x", val)))
 				}