majian-spc opened a new issue #13772:
URL: https://github.com/apache/shardingsphere/issues/13772
## Question
`### Error querying database. Cause: java.lang.NullPointerException
### The error may exist in
cn/ca/matrix/lra/server/dao/mapper/cert/BaseCertificateMapper.java (best guess)
### The error may involve
cn.ca.matrix.lra.server.dao.mapper.cert.BaseCertificateMapper.selectByExample_COUNT
### The error occurred while handling results
### SQL: SELECT count(0) FROM T_OPS_CA_CERTIFICATE WHERE (operate_month
BETWEEN ? AND ?)
### Cause: java.lang.NullPointerException
org.mybatis.spring.MyBatisSystemException: nested exception is
org.apache.ibatis.exceptions.PersistenceException:
### Error querying database. Cause: java.lang.NullPointerException
### The error may exist in
cn/ca/matrix/lra/server/dao/mapper/cert/BaseCertificateMapper.java (best guess)
### The error may involve
cn.ca.matrix.lra.server.dao.mapper.cert.BaseCertificateMapper.selectByExample_COUNT
### The error occurred while handling results
### SQL: SELECT count(0) FROM T_OPS_CA_CERTIFICATE WHERE (operate_month
BETWEEN ? AND ?)
### Cause: java.lang.NullPointerException
`
`Caused by: org.apache.ibatis.exceptions.PersistenceException:
### Error querying database. Cause: java.lang.NullPointerException
### The error may exist in
cn/ca/matrix/lra/server/dao/mapper/cert/BaseCertificateMapper.java (best guess)
### The error may involve
cn.ca.matrix.lra.server.dao.mapper.cert.BaseCertificateMapper.selectByExample_COUNT
### The error occurred while handling results
### SQL: SELECT count(0) FROM T_OPS_CA_CERTIFICATE WHERE (operate_month
BETWEEN ? AND ?)
### Cause: java.lang.NullPointerException
at
org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30)
at
org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:150)
at
org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433)
... 98 common frames omitted
Caused by: java.lang.NullPointerException: null`
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