服务器未知运行时异常: 
### Error querying database.  Cause: java.sql.SQLSyntaxErrorException: Unknown column 'bcr.approval_sign_id' in 'on clause'
### The error may exist in URL [jar:file:/home/admin/app/wangpeng/metering-jenkins/casic-metering-api-2.0.0/lib/casic-metering-dao-2.0.0.jar!/mapper/business/BusinessCertificateReportMapper.xml]
### The error may involve defaultParameterMap
### The error occurred while setting parameters
### SQL: SELECT bcr.*,                ss.sign_name     AS signName,                ss1.sign_name    AS approvalSignName,                st.template_name AS templateName         FROM business_certificate_report bcr                  LEFT JOIN system_sign ss ON bcr.sign_id = ss.id                  LEFT JOIN system_sign ss1 ON bcr.approval_sign_id = ss1.id                  LEFT JOIN system_template st ON bcr.template_id = st.id         WHERE bcr.is_del = 0           AND bcr.ID = ?
### Cause: java.sql.SQLSyntaxErrorException: Unknown column 'bcr.approval_sign_id' in 'on clause'
; bad SQL grammar []; nested exception is java.sql.SQLSyntaxErrorException: Unknown column 'bcr.approval_sign_id' in 'on clause'