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grant read,write on directory data_dir to dbuser; grant exp_full_database,imp_full_database to dbuser; 参考自: https://blog.csdn.net/mr_awei/article/deta 阅读全文
摘要:
上次用过忘记了,所以备份一下 在几千条记录里,存在着些相同的记录,如何能用SQL语句,删除掉重复的呢 1、查找表中多余的重复记录,重复记录是根据单个字段(peopleId)来判断 select from people where peopleId in (select peopleId from p 阅读全文
摘要:
Calendar cal = Calendar.getInstance(); cal.set(2019,10,11); Date time = cal.getTime(); System.out.println("当前指定日期是:"+new SimpleDateFormat(fm).format(t 阅读全文