auto_oid in Log and HA
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在eXtremeDB中,当使用HA和Log组件,我们需要在schema文件中增加“declare auto_oid[]”这样的语句。
当加入了该语句后,数据库会在每一个表增加一个字段,auto_oid,该字段是数据库内部自动管理的,对用户是透明的。
但是,当用户使用有些接口(如C++,UDA)时,还是会访问到该字段,需要注意。该字段在数据库内部是tpReference类型。
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