hibernate exists用法
- 作者: 闹够了没有wait
- 来源: 51数据库
- 2021-01-28
String hql = "SELECT count(*) FROM MyObject ob where ob.employee=? ";
Object[] paras = new Object[] { employee };
Long rCount = (Long)createQuery(hql, paras).uniqueResult();
再判断null等
hibernate hql怎么才能使用类似数据库中的exists操作
string hql = "select count(*) from myobject ob where ob.employee=? ";
object[] paras = new object[] { employee };
long rcount = (long)createquery(hql, paras).uniqueresult();
再判断null等
Object[] paras = new Object[] { employee };
Long rCount = (Long)createQuery(hql, paras).uniqueResult();
再判断null等
hibernate hql怎么才能使用类似数据库中的exists操作
string hql = "select count(*) from myobject ob where ob.employee=? ";
object[] paras = new object[] { employee };
long rcount = (long)createquery(hql, paras).uniqueresult();
再判断null等
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