From 123bad4bcd7de16f2539bd1fc29562637ff173ba Mon Sep 17 00:00:00 2001
From: unknown <2833605196@qq.com>
Date: Thu, 29 Sep 2022 12:06:01 +0800
Subject: [PATCH] =?UTF-8?q?06=E9=99=88=E6=A2=85=E9=A6=99?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../2022.09.28\344\275\234\344\270\232.sql"   | 33 +++++++++++++++++++
 .../2022.09.28\344\272\213\345\212\241.md"    | 29 ++++++++++++++++
 2 files changed, 62 insertions(+)
 create mode 100644 "06\351\231\210\346\242\205\351\246\231/\344\275\234\344\270\232/2022.09.28\344\275\234\344\270\232.sql"
 create mode 100644 "06\351\231\210\346\242\205\351\246\231/\347\254\224\350\256\260/2022.09.28\344\272\213\345\212\241.md"

diff --git "a/06\351\231\210\346\242\205\351\246\231/\344\275\234\344\270\232/2022.09.28\344\275\234\344\270\232.sql" "b/06\351\231\210\346\242\205\351\246\231/\344\275\234\344\270\232/2022.09.28\344\275\234\344\270\232.sql"
new file mode 100644
index 0000000..bbeec65
--- /dev/null
+++ "b/06\351\231\210\346\242\205\351\246\231/\344\275\234\344\270\232/2022.09.28\344\275\234\344\270\232.sql"
@@ -0,0 +1,33 @@
+select * from AccountInfo  --个人信息
+select * from BankCard  --银行卡信息
+select * from CardStateChange  --银行卡状态更改表
+select * from CardTransfer  --转账表
+select * from CardExchange  --交易记录
+--假设刘备取款6000，(添加check约束，设置账户余额必须>=0)，要求：使用事务实现，修改余额和添加取款记录两步操作使用事务
+--update BankCard set CardMoney=6000 where CardNo=6225125478544587;
+
+alter table bankcard
+add check(cardmoney>=0);
+
+begin transaction t_bank
+update BankCard set CardMoney=CardMoney-6000 where CardNo=6225125478544587
+if @@ERROR!=0
+rollback transaction
+insert into CardExchange values(6225125478544587,0,6000,GETDATE()) 
+if @@ERROR!=0
+rollback transaction
+else 
+commit transaction t_bank
+--刘备向张飞转账1000元，(添加check约束，设置账户余额必须>=0)
+begin transaction t_banktransfer
+update BankCard set CardMoney=CardMoney-1000 where CardNo=6225125478544587
+if @@ERROR!=0
+rollback transaction
+insert into CardTransfer values(6225125478544587,6225547854125656,1000,GETDATE()) 
+if @@ERROR!=0
+rollback transaction
+update BankCard set CardMoney=CardMoney+1000 where CardNo=6225547854125656
+if @@ERROR!=0
+rollback transaction
+else 
+commit transaction t_banktransfer
\ No newline at end of file
diff --git "a/06\351\231\210\346\242\205\351\246\231/\347\254\224\350\256\260/2022.09.28\344\272\213\345\212\241.md" "b/06\351\231\210\346\242\205\351\246\231/\347\254\224\350\256\260/2022.09.28\344\272\213\345\212\241.md"
new file mode 100644
index 0000000..bfa16b7
--- /dev/null
+++ "b/06\351\231\210\346\242\205\351\246\231/\347\254\224\350\256\260/2022.09.28\344\272\213\345\212\241.md"
@@ -0,0 +1,29 @@
+2022.09.28浜嬪姟
+
+涓�涓簨鍔′腑鐨勬墍鏈� SQL 璇彞锛岃涔堝叏閮ㄦ墽琛屾垚鍔燂紝瑕佷箞鍏ㄩ儴鎵ц澶辫触锛屼笉浼氱粨鏉熷湪涓棿鐨勬煇涓幆鑺傘�備簨鍔″湪鎵ц杩囩▼涓彂鐢熼敊璇紝浼氳鍥炴粴锛圧ollback锛夊埌浜嬪姟寮�濮嬪墠鐨勭姸鎬侊紝灏卞儚杩欎釜浜嬪姟浠庢潵娌℃湁鎵ц杩囦竴鏍枫��
+
+##### 2) 涓�鑷存��
+
+鍦ㄤ簨鍔″紑濮嬩箣鍓嶅拰浜嬪姟缁撴潫浠ュ悗锛屾暟鎹簱鐨勫畬鏁存�ф病鏈夎鐮村潖銆傝繖琛ㄧず鍐欏叆鐨勬暟鎹繀椤诲畬鍏ㄧ鍚堟墍鏈夌殑棰勮瑙勫垯锛屽叾涓寘鍚暟鎹殑绮剧‘搴︺�佷覆鑱旀�т互鍙婂悗缁暟鎹簱鍙互鑷彂鎬у湴瀹屾垚棰勫畾鐨勫伐浣溿��
+
+##### 3) 闅旂鎬�
+
+鏁版嵁搴撳厑璁稿涓苟鍙戜簨鍔″悓鏃跺鍏舵暟鎹繘琛岃鍐欏拰淇敼鐨勮兘鍔涳紝闅旂鎬у彲浠ラ槻姝㈠涓簨鍔″苟鍙戞墽琛屾椂鐢变簬浜ゅ弶鎵ц鑰屽鑷存暟鎹殑涓嶄竴鑷淬�備簨鍔￠殧绂诲垎涓轰笉鍚岀骇鍒紝鍖呮嫭璇绘湭鎻愪氦锛圧ead uncommitted锛夈�佽鎻愪氦锛坮ead committed锛夈�佸彲閲嶅璇伙紙repeatable read锛夊拰涓茶鍖栵紙Serializable锛夈��  姝婚攣 鎿嶄綔绯荤粺
+
+##### 4) 鎸佷箙鎬�
+
+浜嬪姟澶勭悊缁撴潫鍚庯紝瀵规暟鎹殑淇敼灏辨槸姘镐箙鐨勶紝鍗充究绯荤粺鏁呴殰涔熶笉浼氫涪澶便��
+
+#### 浜嬪姟鍒嗙被
+
+**鑷姩鎻愪氦浜嬬墿**锛� 鏄疭QL Server榛樿鐨勪竴绉嶄簨鍔℃ā寮忥紝姣忔潯Sql璇彞閮借鐪嬫垚涓�涓簨鍔¤繘琛屽鐞嗐��
+
+**鏄惧紡浜嬪姟**: T-sql鏍囨槑锛岀敱Begin Transaction寮�鍚簨鍔″紑濮嬶紝鐢盋ommit Transaction 鎻愪氦浜嬪姟銆丷ollback Transaction 鍥炴粴浜嬪姟缁撴潫銆� 
+
+**闅愬紡浜嬪姟**锛氫娇鐢⊿et IMPLICIT_TRANSACTIONS ON 灏嗗皢闅愬紡浜嬪姟妯″紡鎵撳紑锛屼笉鐢˙egin Transaction寮�鍚簨鍔★紝褰撲竴涓簨鍔＄粨鏉燂紝杩欎釜妯″紡浼氳嚜鍔ㄥ惎鐢ㄤ笅涓�涓簨鍔★紝鍙敤Commit Transaction 鎻愪氦浜嬪姟銆丷ollback Transaction 鍥炴粴浜嬪姟鍗冲彲銆�
+
+TIPS:
+
+**浜嬬墿鍥炴粴**锛�  
+
+xact_abort  on/off : 涓簅n鏃跺鏋滃綋鍓峴ql鍑洪敊锛屽洖婊氭暣涓簨鍔★紝涓簅ff鏃跺鏋渟ql鍑洪敊鍥炴粴褰撳墠sql璇彞锛屽叾瀹冭鍙ョ収甯歌繍琛岃鍐欐暟鎹簱銆�
\ No newline at end of file
-- 
Gitee