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通过执行Explain Analyze/Explain Format=tree语句可以确认优化是否生效，执行计划出现'with distinct optimization'关键字时，说明优化生效。 具体步骤如下： 准备数据。
通过执行Explain Analyze/Explain Format=tree语句可以确认优化是否生效，执行计划出现'with distinct optimization'关键字时，说明优化生效。 具体步骤如下： 准备数据。
__": # The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks.
__": # The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks.
开启透明数据加密后，根据需要选择对应的加密算法。目前支持AES256和SM4加密算法。 说明： 透明数据加密功能为白名单功能，如需使用，请在管理控制台右上角，选择“工单 > 新建工单”，提交申请。
availability_zone Array of MysqlProxyAvailable objects 参数解释： 可用区信息。 表9 MysqlProxyAvailable 参数 参数类型 描述 code String 参数解释： 可用区编码。 取值范围： 不涉及。
are hard-coded or stored in plaintext, which has great security risks.
__": # The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks.
FAILED：备份失败。 AVAILABLE：备份可用。 type String 备份类型，手动全量备份，取值为manual。 instance_id String 实例ID，严格匹配UUID规则。
are hard-coded or stored in plaintext, which has great security risks.
are hard-coded or stored in plaintext, which has great security risks.
are hard-coded or stored in plaintext, which has great security risks.
are hard-coded or stored in plaintext, which has great security risks.
取值范围： prePaid：预付费，即包年/包月。 postPaid：后付费，即按需付费。 period_type String 订购周期类型。 取值范围： month：包月。 year：包年。 说明：“charge_mode”为“prePaid”时生效，且为必选值。
are hard-coded or stored in plaintext, which has great security risks.
for authentication are hard-coded or stored in plaintext, which has great security risks.
are hard-coded or stored in plaintext, which has great security risks.
are hard-coded or stored in plaintext, which has great security risks.
are hard-coded or stored in plaintext, which has great security risks.
are hard-coded or stored in plaintext, which has great security risks.
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