摘要:
SQL Server删除重复行是我们最常见的操作之一,下面就为您介绍六种适合不同情况的SQL Server删除重复行的方法,供您参考。 1.如果有ID字段,就是具有唯一性的字段 delect table tableName where id not in ( select max(id) from 阅读全文
摘要:
> Should I use a AntiFreeze component on every form I have a TIdTCPClient > component? Or is one enough to handle the whole Application? One is enough 阅读全文