清空规则

chain.go

@@ -225,6 +225,7 @@ func (this *Query) Clean() *Query {
 	this.upd_field = this.upd_field[0:0]
 	this.having = ""
 	this.alias = ""
+	this.close_hump = false
 	this.with = this.with[0:0]
 	return this
 }