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Update shu_ju_bao_cun_ce_lve_retention_policies.md
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shu_ju_bao_cun_ce_lve_retention_policies.md

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@@ -17,7 +17,7 @@ CREATE RETENTION POLICY "rp_name" ON "db_name" DURATION 30d REPLICATION 1 DEFAUL
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2. db_name:具体的数据库名
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3. 30d:保存30天,30天之前的数据将被删除
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它具有各种时间参数,比如:h(小时),w(星期)
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4. REPLICATION 1:副本个数,这里添1就可以了
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4. REPLICATION 1:副本个数,这里填1就可以了
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5. DEFAULT 设为默认的策略
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## 修改Retention Policies

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