Fix mysql type reading

> That's a specialty of MySQL: you have to use prepared statements to get the native types. MySQL has two protocols, one transmits everything as text, the other as the "real" type. And that binary protocol is only used when you use prepared statements. The driver is pretty much powerless to enforce a protocol and the text protocol takes less resources on the server.
go-sql-driver/mysql#407 (comment)

0_o

mysql/mysql.go

@@ -397,7 +397,13 @@ func (model mysqlModel) GetSqlRows(table *schema.Table, params *params.TablePara
 	defer dbc.Close()
 
 	sql, values := buildQuery(table, params, peekFinder)
-	rows, err = dbc.Query(sql, values...)
+	statement, err := dbc.Prepare(sql)
+	if err != nil {
+		log.Print("GetRows failed to prepare query")
+		log.Println(sql)
+		log.Println(err)
+	}
+	rows, err = statement.Query(values...)
 	if err != nil {
 		log.Print("GetRows failed to get query")
 		log.Println(sql)