hello

data/1.OceanBase初阶/2.基本操作/7.查询数据/config.json

 {
   "keywords": [],
   "node_id": "c-a7151df5705f4579bf5f63413385242e",
-  "title": "查询数据"
+  "title": "查询数据",
+  "export": ["hello.json"]
 }
\ No newline at end of file

data/1.OceanBase初阶/2.基本操作/7.查询数据/hello.json

+{
+    "type": "code_options",
+    "author": "刘鑫",
+    "source": "hello.md"
+}
\ No newline at end of file

data/1.OceanBase初阶/2.基本操作/7.查询数据/hello.md

+# Hello
+
+下面哪个选项可以显示 “Hello”？
+
+## 答案
+
+```sql
+select 'Hello';
+```
+
+## 选项
+
+### 关键字错误
+
+```sql
+print 'Hello';
+```
+
+### 字符串类型错误
+
+```sql
+select "Hello";
+```
+
+### 关键字错误
+
+```sql
+echo 'Hello';
+```
+
+### 关键字错误
+
+```sql
+log 'Hello';
+```
+