因此,在下面的sql中,我试图通过从另一个表employee_agreement中选择来插入到agreement_tbl中。员工协议表返回大约6000行。因此,对于每一行插入,我希望在AGREEMENT_NBR列中插入惟一的max(agreement_nbr) +1。问题是,由于sql首先执行,所以max(agreement_nbr)总是相同的,比如5000,当我尝试插入max(agreement_nbr)时,它抛出‘唯一约束异常’,因为它试图为所有6000次插入插入INSERT
INT
概述我还有一个带有标识符check_box的:agreement%h6 Is this a membership?= f.radio_button :agreement, true, id: "membership_yes"
=f.radio_button :agreement, false, id: "
AS total WHERE agreement_installments.agreement_id = agreements.idGROUP BY calculated_status ) agreement_status", "#{ AgreementInstallment.calculated_status_sqlSUM(#{AgreementInstallment
在我的Database实例中,我有一个可以从数据库中删除Agreement对象的方法。但是,我希望能够同时删除多个Agreement,以便能够使用事务。问题是,我还需要重载来删除单个Agreement对象。public class Database // ...public void RemoveAgreement(Agreement a) // ...
public void RemoveA