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Original file line number Diff line number Diff line change
Expand Up @@ -52,7 +52,7 @@ illustrate:
2) Modify / add properties for the catalog

```sql
ALTER CATALOG catalog_name SET PROPERTIES ('key1' = 'value1' [, 'key' = 'value2']);
ALTER CATALOG catalog_name SET PROPERTIES ('key1' = 'value1', 'key' = 'value2');
```

Update values of specified keys. If a key does not exist in the catalog properties, it will be added.
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Original file line number Diff line number Diff line change
Expand Up @@ -51,7 +51,7 @@ ALTER CATALOG catalog_name RENAME new_catalog_name;
2) 设置数据目录属性

```sql
ALTER CATALOG catalog_name SET PROPERTIES ('key1' = 'value1' [, 'key' = 'value2']);
ALTER CATALOG catalog_name SET PROPERTIES ('key1' = 'value1', 'key' = 'value2');
```

更新指定属性的值为指定的 value。如果 SET PROPERTIES 从句中的 key 在指定 catalog 属性中不存在,则新增此 key。
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