From 239a6a42fd70b52a960b140dae38590f3c01cf60 Mon Sep 17 00:00:00 2001
From: Mars Liu <mars.liu@outlook.com>
Date: Thu, 4 Nov 2021 18:30:47 +0800
Subject: [PATCH] rollback

---
 .../config.json"                              |  3 +-
 .../rollback.json"                            |  5 +++
 .../rollback.md"                              | 38 +++++++++++++++++++
 3 files changed, 45 insertions(+), 1 deletion(-)
 create mode 100644 "data/2.OceanBase\344\270\255\351\230\266/9.\345\233\236\346\273\232\344\272\213\345\212\241/rollback.json"
 create mode 100644 "data/2.OceanBase\344\270\255\351\230\266/9.\345\233\236\346\273\232\344\272\213\345\212\241/rollback.md"

diff --git "a/data/2.OceanBase\344\270\255\351\230\266/9.\345\233\236\346\273\232\344\272\213\345\212\241/config.json" "b/data/2.OceanBase\344\270\255\351\230\266/9.\345\233\236\346\273\232\344\272\213\345\212\241/config.json"
index df97ef0..9f46a23 100644
--- "a/data/2.OceanBase\344\270\255\351\230\266/9.\345\233\236\346\273\232\344\272\213\345\212\241/config.json"
+++ "b/data/2.OceanBase\344\270\255\351\230\266/9.\345\233\236\346\273\232\344\272\213\345\212\241/config.json"
@@ -1,5 +1,6 @@
 {
   "keywords": [],
   "node_id": "oceanbase-173dda0ef67d4d178b9454191b8a2c7e",
-  "title": "回滚事务"
+  "title": "回滚事务",
+  "export": ["rollback.md"]
 }
\ No newline at end of file
diff --git "a/data/2.OceanBase\344\270\255\351\230\266/9.\345\233\236\346\273\232\344\272\213\345\212\241/rollback.json" "b/data/2.OceanBase\344\270\255\351\230\266/9.\345\233\236\346\273\232\344\272\213\345\212\241/rollback.json"
new file mode 100644
index 0000000..78186a9
--- /dev/null
+++ "b/data/2.OceanBase\344\270\255\351\230\266/9.\345\233\236\346\273\232\344\272\213\345\212\241/rollback.json"
@@ -0,0 +1,5 @@
+{
+  "type": "code_options",
+  "author": "刘鑫",
+  "source": "rollback.md"
+}
\ No newline at end of file
diff --git "a/data/2.OceanBase\344\270\255\351\230\266/9.\345\233\236\346\273\232\344\272\213\345\212\241/rollback.md" "b/data/2.OceanBase\344\270\255\351\230\266/9.\345\233\236\346\273\232\344\272\213\345\212\241/rollback.md"
new file mode 100644
index 0000000..909447b
--- /dev/null
+++ "b/data/2.OceanBase\344\270\255\351\230\266/9.\345\233\236\346\273\232\344\272\213\345\212\241/rollback.md"
@@ -0,0 +1,38 @@
+# Rollback
+
+下列哪一个选项可以正确的回滚写入？
+
+## 答案
+
+```sql
+begin;
+insert into cust(c_city, c_first, c_last) select 'Tian Jin', 'Mars', 'Liu';
+rollback ;
+```
+
+## 选项
+
+### 先 commit 了
+
+```sql
+begin;
+insert into cust(c_city, c_first, c_last) select 'Tian Jin', 'Mars', 'Liu';
+commit;
+rollback ;
+```
+
+### 不必要的 end
+
+```sql
+begin;
+insert into cust(c_city, c_first, c_last) select 'Tian Jin', 'Mars', 'Liu';
+rollback ;
+end;
+```
+
+### 没有发起事务
+
+```sql
+insert into cust(c_city, c_first, c_last) select 'Tian Jin', 'Mars', 'Liu';
+rollback ;
+```
-- 
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