---
title: "查看表的定义 | OceanBase 文档中心"
description: "查看表的定义 表创建成功后，您可以通过 SQL 语句来查看表的定义。 使用以下语句来查看表的定义： obclient> SELECT dbms_metadata.get_ddl( 'TABLE', 'TEST', 'SYS' ) FROM DUAL; +-------+------------------------…"
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---
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# 查看表的定义

更新时间：2023-07-18 17:25:59

表创建成功后，您可以通过 SQL 语句来查看表的定义。

使用以下语句来查看表的定义：

```sql
obclient> SELECT dbms_metadata.get_ddl( 'TABLE', 'TEST', 'SYS' ) FROM DUAL;
+-------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Table | Create Table                                                                                                                                                                                                                                                                                                                                                                       |
+-------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| TEST    | CREATE TABLE `test` (
  `id` bigint(20) NOT NULL AUTO_INCREMENT,
  `name` varchar(50) DEFAULT NULL,
  `gmt_create` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
  PRIMARY KEY (`id`)
) AUTO_INCREMENT = 1 DEFAULT CHARSET = utf8mb4 ROW_FORMAT = DYNAMIC COMPRESSION = 'zstd_1.3.8' REPLICA_NUM = 1 BLOCK_SIZE = 16384 USE_BLOOM_FILTER = FALSE TABLET_SIZE = 134217728 PCTFREE = 0 |
+-------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.01 sec)

```

如果想查看某个表或者表空间的 DDL，可以利用 `dbms_metadata.get_ddl` 这个包来查看， `TABLE` 字段代表 DDL 语句的对象类型为表，`TEST` 字段代表表名，`SYS` 代表查看 `SYS` 用户下的表。

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