关于hibernate子查询参数的问题

private Map<String, Object> createWblHqlContext(boolean needGroup, String startDate, String endDate) {
        Map<String, Object> context = new HashMap<String, Object>();
        // 构建hql
        StringBuilder hql = new StringBuilder();
        hql.append(this.createVaInfoWblDaySelectPart(startDate, endDate)).append(" ");

hql.append("from WfjWbl t where 1=1 ");
        List<Object> params = new ArrayList<Object>();
        if (startDate.length() > 0) {
            hql.append(" and t.settlementDate >= ?");
            params.add(startDate);
        }
        if (endDate.length() > 0) {
            hql.append(" and t.settlementDate <= ?");
            params.add(endDate);
        }
        if (needGroup)
            hql.append(" ").append(this.createVaInfoWblDayGroupByPart());
        context.put("hql", hql.toString());
        context.put("params", params);
        return context;
    }

// 构造select字段
    private String createVaInfoWblDaySelectPart(String startDate,String endDate) {
        StringBuilder sb = new StringBuilder();
        sb.append("select t.settlementDate,");// 清算日期
        sb.append("sum(t.amount)/100 ,"); // 清算交易金额
        sb.append("sum(t.amount)/100 ,"); // 交易笔数
        sb.append("sum(t.shopfee)/100 ,"); // 商户手续费
        sb.append("((sum(t.sdsy)/100-sum(t.advancefee)/100)) ,"); // 王府井入账金额
        sb.append("sum(t.sdsy)/100, "); // 收单收入
        sb.append("sum(t.wangsy)/100,"); // 王府井收入
        sb.append("sum(t.cjfsy)/100, "); // 插件方收入
        sb.append("sum(t.wangsh)/100, "); // 王府井损失
        sb.append("sum(t.cjfsh)/100 "); // 插件方损失
        sb.append("( ").append(this.createNoCardPayQueryThirdsySelectByPart())
        .append(this.createNoCardPayQueryThirdsyFromByPart(startDate, endDate))
        .append(" and t.mernum = '898110248990216'").append(this.createVaInfoWblDayGroupByPart()).append(") ");//代垫手续费（国美）

return sb.toString();
    }

// 构造group by字段
    private String createVaInfoWblDayGroupByPart() {
        StringBuilder sb = new StringBuilder();
        sb.append("group by t.settlementDate ");
        return sb.toString();
    }
    
    //构造sql查询代垫手续费，
    private String createNoCardPayQueryThirdsySelectByPart() {
        StringBuilder sb = new StringBuilder();
        sb.append("select sum(t.thirdsy)/100 ");
        return sb.toString();
    }

//构造sql查询代垫手续费的from部分
    private String createNoCardPayQueryThirdsyFromByPart(String startDate, String endDate) {
        StringBuilder sb = new StringBuilder();
        sb.append("from WfjWbl t where 1=1 ");
        List<Object> params = new ArrayList<Object>();
        if (startDate.length() > 0) {
            sb.append(" and t.settlementDate >= ?");
            params.add(startDate);
        }
        if (endDate.length() > 0) {
            sb.append(" and t.settlementDate <= ?");
            params.add(endDate);
        }
        return sb.toString();
    }

当添加红色部分内容时，页面就报org.springframework.orm.hibernate3.HibernateQueryException: unexpected token: ( near line 1, column 215 [select t.settlementDate,sum(t.amount)/100 ,sum(t.amount)/100 ,sum(t.shopfee)/100 ,((sum(t.sdsy)/100-sum(t.advancefee)/100)) ,sum(t.sdsy)/100, sum(t.wangsy)/100,sum(t.cjfsy)/100, sum(t.wangsh)/100, sum(t.cjfsh)/100 ( select sum(t.thirdsy)/100 from cn.net.wangfujing.model.WfjWbl t where 1=1 and t.settlementDate >= ? and t.settlementDate <= ? and t.mernum = '898110248990216'group by t.settlementDate ) from cn.net.wangfujing.model.WfjWbl t where 1=1 and t.settlementDate >= ? and t.settlementDate <= ? group by t.settlementDate

求助！！！