gaoyunhaii commented on a change in pull request #16070:
URL: https://github.com/apache/flink/pull/16070#discussion_r657588967
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File path: docs/content.zh/docs/dev/table/sql/drop.md
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@@ -146,6 +147,18 @@ Flink SQL> SHOW TABLES;
{{< /tab >}}
{{< /tabs >}}
+## DROP CATALOG
+
+```sql
+DROP CATALOG [IF EXISTS] catalog_name
+```
+
+删除给定的 catalog name 的 catalog。
+
+**IF EXISTS**
+
+如果目标 catalog 不存在，则不会生效。
Review comment:
则不会生效 => 不会执行任何操作？
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