docs: show create database (#1284)

docs/reference/sql/show.md

@@ -34,7 +34,7 @@ SHOW DATABASES WHERE Schemas='test_public_schema';
 Show all databases with options:
 
 ```sql
-create database with(ttl='7d');
+CREATE DATABASE test WITH(ttl='7d');
 SHOW FULL DATABASES;
 ```
 
@@ -49,6 +49,26 @@ SHOW FULL DATABASES;
 +--------------------+-------------+
 ```
 
+## SHOW CREATE DATABASE
+
+Shows the `CREATE DATABASE` statement that creates the named database:
+
+```sql
+SHOW CREATE DATABASE test;
+```
+
+```sql
++----------+------------------------------------------------------------+
+| Database | Create Database                                            |
++----------+------------------------------------------------------------+
+| test     | CREATE DATABASE IF NOT EXISTS test
+WITH(
+  ttl = '7days'
+) |
++----------+------------------------------------------------------------+
+1 row in set (0.01 sec)
+```
+
 ## SHOW TABLES
 
 Show all tables:

i18n/zh/docusaurus-plugin-content-docs/current/reference/sql/show.md

@@ -34,7 +34,7 @@ SHOW DATABASES WHERE Schemas='test_public_schema';
 展示所有数据库，包括它们的选项：
 
 ```sql
-create database with(ttl='7d');
+CREATE DATABASE test WITH(ttl='7d');
 SHOW FULL DATABASES;
 ```
 
@@ -49,6 +49,26 @@ SHOW FULL DATABASES;
 +--------------------+-------------+
 ```
 
+## SHOW CREATE DATABASE
+
+展示创建指定数据库的 `CREATE DATABASE` 语句：
+
+```sql
+SHOW CREATE DATABASE test;
+```
+
+```sql
++----------+------------------------------------------------------------+
+| Database | Create Database                                            |
++----------+------------------------------------------------------------+
+| test     | CREATE DATABASE IF NOT EXISTS test
+WITH(
+  ttl = '7days'
+) |
++----------+------------------------------------------------------------+
+1 row in set (0.01 sec)
+```
+
 ## SHOW TABLES
 
 展示所有表：