【DM版本】：dm7
【操作系统】：凝思
【问题描述】：执行查询，mybatis处理结果集的过程中，出现错误
Caused by: java.lang.NullPointerException
at dm7.jdbc.driver.DmdbCSI.fetch(DmdbCSI.java:895)
以下为异常栈详细信息：

[07/23 06:20:48] [DEBUG] SQLErrorCodeSQLExceptionTranslator: Unable to translate SQLException with Error code '0', will now try the fallback translator
org.springframework.jdbc.UncategorizedSQLException: 
### Error querying database.  Cause: java.sql.SQLException: Error
### The error may exist in file [/home/d5000/jiangxi/yxyd/apache-tomcat-7.0.82/webapps/yxyd/WEB-INF/classes/mapping/DataMapper.xml]
### The error may involve com.tellhow.yxyd.dao.DataMapper.findAllYxydYc96ByDate
### The error occurred while handling results
### SQL: select * from (select yc_id,occur_time,pointvalue,org_id,to_char(occur_time,'hh24:mi') as hm         from YXYD.T_TBP_YCLOAD_SOURCE_202107 where 1=1 and occur_time >=? and to_date(?)+1>=occur_time                   ) where substr(occur_time, 15, 2)%15 =0
### Cause: java.sql.SQLException: Error
; uncategorized SQLException for SQL []; SQL state [null]; error code [0]; Error; nested exception is java.sql.SQLException: Error
	at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:84)
	at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81)
	at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81)
	at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:73)
	at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:446)
	at com.sun.proxy.$Proxy24.selectList(Unknown Source)
	at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:230)
	at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:139)
	at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:76)
	at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59)
	at com.sun.proxy.$Proxy42.findAllYxydYc96ByDate(Unknown Source)
	at com.tellhow.yxyd.service.impl.DataServiceImpl.initYcsum96user(DataServiceImpl.java:143)
	at com.tellhow.yxyd.job.ExcuteSum96Job.excuteKZDandYXYD(ExcuteSum96Job.java:54)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:65)
	at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
	at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.sql.SQLException: Error
	at com.alibaba.druid.pool.DruidDataSource.handleConnectionException(DruidDataSource.java:1543)
	at com.alibaba.druid.pool.DruidPooledConnection.handleException(DruidPooledConnection.java:133)
	at com.alibaba.druid.pool.DruidPooledStatement.checkException(DruidPooledStatement.java:77)
	at com.alibaba.druid.pool.DruidPooledResultSet.checkException(DruidPooledResultSet.java:55)
	at com.alibaba.druid.pool.DruidPooledResultSet.next(DruidPooledResultSet.java:79)
	at sun.reflect.GeneratedMethodAccessor68.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.ibatis.logging.jdbc.ResultSetLogger.invoke(ResultSetLogger.java:68)
	at com.sun.proxy.$Proxy76.next(Unknown Source)
	at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleRowValuesForSimpleResultMap(DefaultResultSetHandler.java:353)
	at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleRowValues(DefaultResultSetHandler.java:330)
	at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSet(DefaultResultSetHandler.java:303)
	at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSets(DefaultResultSetHandler.java:196)
	at org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:64)
	at org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:79)
	at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:63)
	at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:326)
	at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156)
	at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:109)
	at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:83)
	at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:148)
	at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141)
	at sun.reflect.GeneratedMethodAccessor87.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433)
	... 22 more
Caused by: java.lang.NullPointerException
	at dm7.jdbc.driver.DmdbCSI.fetch(DmdbCSI.java:895)
	at dm7.jdbc.driver.DmdbResultSet_bs.fetchData(DmdbResultSet_bs.java:6027)
	at dm7.jdbc.driver.DmdbResultSet_bs.next(DmdbResultSet_bs.java:448)
	at dm7.jdbc.driver.DmdbResultSet.next(DmdbResultSet.java:207)
	at com.alibaba.druid.pool.DruidPooledResultSet.next(DruidPooledResultSet.java:69)
	... 44 more