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                [TOC] # 回收站支持的對象 回收站用來存儲用戶刪除的數據庫和表等信息。回收站在原理上說就是一個數據字典表,放置用戶刪除的數據庫對象信息。用戶刪除的東西被放入回收站后,其實仍然占據著物理空間,除非您手動進行清除(`PURGE`)或者對象定期被數據庫系統刪除。 OceanBase 數據庫 V1.0.0 時就實現了回收站功能。 可以進入回收站的對象有索引、表、庫和租戶。 <table data-tag="table" id="table-l6e-wyb-u78" class="table"><colgroup width="123" span="1" data-tag="col" id="col-3b1-hbj-lcx" colwidth="1*" colnum="1" colname="col1" style="width:20%" class="col"></colgroup><colgroup width="144" span="1" data-tag="col" id="col-157-wtn-ir9" colwidth="1*" colnum="2" colname="col2" style="width:20%" class="col"></colgroup><colgroup width="144" span="1" data-tag="col" id="col-heu-784-fwj" colwidth="1*" colnum="3" colname="col3" style="width:20%" class="col"></colgroup><colgroup width="168" span="1" data-tag="col" id="col-7u8-8sz-7en" colwidth="1*" colnum="4" colname="col4" style="width:20%" class="col"></colgroup><colgroup width="144" span="1" data-tag="col" id="col-1mu-amy-pc5" colwidth="1*" colnum="5" colname="col5" style="width:20%" class="col"></colgroup><thead id="thead-nlq-3lf-nie" class="thead"><tr id="tr-4qd-3nx-pyq"><th id="td-95a-9pe-u56"><p id="p-6c6-3q4-yk2"><b>模式</b></p></th><th id="td-x6y-mpu-3ee"><p id="p-2k3-x5x-1c9"><b>索引(Index)</b></p></th><th id="td-3kj-8pb-9vg"><p id="p-01a-y7t-7b3"><b>表(Table)</b></p></th><th id="td-gnv-p1z-tdy"><p id="p-oxs-vx2-ydt"><b>數據庫(Database)</b></p></th><th id="td-oyy-01f-3vb"><p id="p-b3z-ujy-jwn"><b>租戶(Tenant)</b></p></th></tr></thead><tbody data-tag="tbody" id="tbody-1wa-vbe-myg" class="tbody"><tr data-tag="tr" id="tr-w47-spk-min" class="tr"><td data-tag="td" id="td-llz-ced-rag" class="td"><p data-tag="p" id="p-3hd-wo6-z68" class="p"><span data-mce-style="font-size: 11px" data-tag="span" id="span-y7p-82l-vww" class="span"><b>MySQL</b></span></p></td><td data-tag="td" id="td-3bg-ysn-um3" class="td"><p data-tag="p" id="p-w0o-avl-6tf" class="p">√</p></td><td data-tag="td" id="td-k1p-5o5-xiy" class="td"><p id="p-ijy-rmx-xw6">√</p></td><td data-tag="td" id="td-n9h-pic-4k7" class="td"><p id="p-e06-gqy-z3n">√</p></td><td data-tag="td" id="td-y61-t8d-g39" class="td"><p data-tag="p" id="p-1vn-gxu-lzq" class="p">√</p></td></tr></tbody></table> **注意** * `TRUNCATE`或`DROP`系統表不會進入回收站。 * 直接`TRUNCATE`或`DROP`索引不會進入回收站。 * 不能對回收站的對象做任何寫操作(DML或 DDL 操作),只能進行只讀操作(`SELECT`)。 * 操作時需要使用租戶管理賬號進行操作。
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