服务器未知运行时异常: 
### Error querying database.  Cause: java.sql.SQLSyntaxErrorException: Every derived table must have its own alias
### The error may exist in file [D:\cz\203\徐州计量\code\casic-metering\casic-metering-dao\target\classes\mapper\business\BusinessCertificateReportMapper.xml]
### The error may involve defaultParameterMap
### The error occurred while setting parameters
### SQL: SELECT COUNT(*) AS total FROM business_certificate_report JOIN (SELECT * FROM business_order WHERE is_del = 0 AND customer_id = ?) WHERE is_del = 0 AND sample_id = ?
### Cause: java.sql.SQLSyntaxErrorException: Every derived table must have its own alias
; bad SQL grammar []; nested exception is java.sql.SQLSyntaxErrorException: Every derived table must have its own alias