mysql - 如何读取我也在 MySQL 中更新的表？

Question

更新声明

UPDATE a_fees af set af.audit_id =  get_audit_id ( pubco_id, auditor_id, 
                                                   (SELECT 
                                                    CONCAT ('''', 
                                                      a_fees.fiscal_year, '', 
                                                      fiscal_period_end_month,'',
                                                      fiscal_period_end_day, '''')
                                                   FROM a_fees, a_fiscal_period_end
  WHERE a_fees.fiscal_period_end_id = a_fiscal_period_end.fiscal_period_end_id)
);

错误信息

#1093 - You can't specify target table 'af' for update in FROM clause

Answer 1

据此，这应该工作：

UPDATE a_fees set audit_id =  get_audit_id ( pubco_id, auditor_id, 
                                                   (SELECT 
                                                    CONCAT ('''', 
                                                      af.fiscal_year, '', 
                                                      fiscal_period_end_month,'',
                                                      fiscal_period_end_day, '''')
                                                   FROM a_fees af, a_fiscal_period_end
  WHERE af.fiscal_period_end_id = a_fiscal_period_end.fiscal_period_end_id)
);