目录1. mysqldump 简介2. 全量备份2.1 备份单个数据库2.2 备份所有数据库2.3 备份特定表3. 数据还原3.1 还原单个数据库3.2 创建新数据库并还原3.3 还原所有数据库4. 注意事项5.方法补充在数据库管理中，数据备份和恢
I have a block element that is positioned absolutely and some other elements on page that are positioned fixed. The effect is the block on top floats over the page which wo开发者_开发问答rks well.
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