Update shu_ju_bao_cun_ce_lve_retention_policies.md

xtutu · web-flow · commit 4a750376a8b5 · 2016-11-24T10:04:58.000+08:00
diff --git a/shu_ju_bao_cun_ce_lve_retention_policies.md b/shu_ju_bao_cun_ce_lve_retention_policies.md
@@ -27,7 +27,7 @@ ALTER RETENTION POLICY "rp_name" ON db_name" DURATION 3w DEFAULT
 
 ## 删除Retention Policies
 ```bash
-DROP RETENTION POLICY "rp_name"
+DROP RETENTION POLICY "rp_name" ON "db_name"
 ```
 
 
