public SelectSql whereSql(WhereSql whereSql) {
        sql.append(whereSql.getSQL());
        params.addAll(whereSql.params());
        return this;
    }
@author Robert HG (254963746@qq.com) on 3/8/16.
lts-core/src/main/java/com/github/ltsopensource/store/jdbc/builder/SelectSql.java