提交 82d983e5 编写于 作者: M Mars Liu

exercises review

上级 9761012e
{ {
"node_id": "mysql-25808aa5b4ba4e78bd3dc59e09b403ed", "node_id": "mysql-25808aa5b4ba4e78bd3dc59e09b403ed",
"keywords": ["create user"], "keywords": [
"create user"
],
"children": [], "children": [],
"export": [ "export": [
"create_user_desc.json", "create_user_desc.json",
......
...@@ -4,4 +4,4 @@ ...@@ -4,4 +4,4 @@
"source": "create_user_desc.md", "source": "create_user_desc.md",
"notebook_enable": false, "notebook_enable": false,
"exercise_id": "" "exercise_id": ""
} }
\ No newline at end of file \ No newline at end of file
...@@ -11,11 +11,12 @@ ...@@ -11,11 +11,12 @@
## 答案 ## 答案
使用
``` ```
GRANT SELECT ON *.* TO 'binghe'@'localhost' GRANT SELECT ON *.* TO 'binghe'@'localhost'
IDENTIFIED BY '@Binghe123456'; IDENTIFIED BY '@Binghe123456';
创建用户名为binghe的用户,密码为@binghe123456,并为用户赋予所有数据表全部权限
``` ```
创建用户名为binghe的用户,密码为@binghe123456,并为用户赋予所有数据表全部权限
## 选项 ## 选项
......
...@@ -20,19 +20,19 @@ INNER JOIN连接的其他表越多性能越好 ...@@ -20,19 +20,19 @@ INNER JOIN连接的其他表越多性能越好
### A ### A
``` ```
INNER JOIN又称为自连接 INNER JOIN 又称为内连接
``` ```
### B ### B
``` ```
INNER JOIN连接的主表和被连接表都为自己 INNER JOIN 确保连接结果仅包含与on表达式匹配的记录
``` ```
### C ### C
``` ```
INNER JOIN出现在FROM子句之后 INNER JOIN出现在FROM子句之后,WHERE走之前
``` ```
### D ### D
......
...@@ -20,9 +20,9 @@ end LOOP trace; ...@@ -20,9 +20,9 @@ end LOOP trace;
(提示)WHILE语法结构为: (提示)WHILE语法结构为:
```sql ```sql
WHILE search_condition DO [label:] WHILE search_condition DO
statement list statement list
END WHILE END WHILE [label]
``` ```
<hr/> <hr/>
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册