qingfeng_ych的博客

改：<if test = " id!=null and id != '' or id ==0 "> t.id = #{id} </if>注：int，bigdecimal 数值类mybatis查询结果某字段为null，则不注入entity，可通过get方法设置返回值。...

oracle:insert into talbe (........) select sequence.nextval id , T.* from ( <foreach collection = "List" item = "item" separator = "union all"> select #{item} from dual ...