服务器未知运行时异常: 
### Error querying database.  Cause: java.sql.SQLSyntaxErrorException: Unknown column 'plan_no' in 'field list'
### The error may exist in file [D:\code\casic-metering-biz-xichang\casic-metering-dao\target\classes\mapper\equipment\BizEquipmentTraceChainChangeMapper.xml]
### The error may involve defaultParameterMap
### The error occurred while setting parameters
### SQL: SELECT IFNULL(max(RIGHT(plan_no, 12)), 0) from biz_equipment_trace_chain_change
### Cause: java.sql.SQLSyntaxErrorException: Unknown column 'plan_no' in 'field list'
; bad SQL grammar []; nested exception is java.sql.SQLSyntaxErrorException: Unknown column 'plan_no' in 'field list'