Using Explicit Transactions : TRANSACTION « Transaction « SQL Server / T-SQL Tutorial

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SQL Server / T-SQL Tutorial » Transaction » TRANSACTION 
23. 1. 5. Using Explicit Transactions
3>
4CREATE TABLE employee(
5>    id          INTEGER NOT NULL PRIMARY KEY,
6>    first_name  VARCHAR(10),
7>    last_name   VARCHAR(10),
8>    salary      DECIMAL(10,2),
9>    start_Date  DATETIME,
10>    region      VARCHAR(10),
11>    city        VARCHAR(20),
12>    managerid   INTEGER
13);
14> GO
1INSERT INTO employee VALUES (1'Jason' ,  'Martin', 5890,'2005-03-22','North','Vancouver',3);
2> GO

(rows affected)
1INSERT INTO employee VALUES (2'Alison',  'Mathews',4789,'2003-07-21','South','Utown',4);
2> GO

(rows affected)
1INSERT INTO employee VALUES (3'James' ,  'Smith',  6678,'2001-12-01','North','Paris',5);
2> GO

(rows affected)
1INSERT INTO employee VALUES (4'Celia' ,  'Rice',   5567,'2006-03-03','South','London',6);
2> GO

(rows affected)
1INSERT INTO employee VALUES (5'Robert',  'Black',  4467,'2004-07-02','East','Newton',7);
2> GO

(rows affected)
1INSERT INTO employee VALUES (6'Linda' ,  'Green' , 6456,'2002-05-19','East','Calgary',8);
2> GO

(rows affected)
1INSERT INTO employee VALUES (7'David' ,  'Larry',  5345,'2008-03-18','West','New York',9);
2> GO

(rows affected)
1INSERT INTO employee VALUES (8'James' ,  'Cat',    4234,'2007-07-17','West','Regina',9);
2> GO

(rows affected)
1INSERT INTO employee VALUES (9'Joan'  ,  'Act',    6123,'2001-04-16','North','Toronto',10);
2> GO

(rows affected)
1>
2select from employee;
3> GO
id          first_name last_name  salary       start_Date              region     city                 managerid
----------- ---------- ---------- ------------ ----------------------- ---------- -------------------- -----------
          Jason      Martin          5890.00 2005-03-22 00:00:00.000 North      Vancouver                      3
          Alison     Mathews         4789.00 2003-07-21 00:00:00.000 South      Utown                          4
          James      Smith           6678.00 2001-12-01 00:00:00.000 North      Paris                          5
          Celia      Rice            5567.00 2006-03-03 00:00:00.000 South      London                         6
          Robert     Black           4467.00 2004-07-02 00:00:00.000 East       Newton                         7
          Linda      Green           6456.00 2002-05-19 00:00:00.000 East       Calgary                        8
          David      Larry           5345.00 2008-03-18 00:00:00.000 West       New York                       9
          James      Cat             4234.00 2007-07-17 00:00:00.000 West       Regina                         9
          Joan       Act             6123.00 2001-04-16 00:00:00.000 North      Toronto                       10

(rows affected)
1>
2>
3SELECT COUNT(*BeforeCount FROM employee
4> -- Variable to hold the latest error integer value
5>
6> DECLARE @Error int
7>
8BEGIN TRANSACTION
9>
10INSERT employee(ID, first_Name)VALUES (10'A')
11> SET @Error = @@ERROR
12> IF (@Error<> 0GOTO Error_Handler
13INSERT employee(ID, first_Name)VALUES (11'E')
14> SET @Error = @@ERROR
15> IF (@Error <> 0GOTO Error_Handler
16> COMMIT TRAN
17> Error_Handler:
18> IF @Error <> 0
19BEGIN
20> ROLLBACK TRANSACTION
21END
22> GO
BeforeCount
-----------
          9

(rows affected)

(rows affected)
1>
2SELECT COUNT(*AfterCount FROM employee
3> GO
AfterCount
-----------
         11

(rows affected)
1>
2>
3>
4> drop table employee;
5> GO
1>
23. 1. TRANSACTION
23. 1. 1. A transaction is bound by the ACID test. ACID stands for Atomicity, Consistency, Isolation (or Independence), and Durability:
23. 1. 2. Explicit Transaction Commands
23. 1. 3. Using Transactions
23. 1. 4. BEGIN TRANSACTION
23. 1. 5. Using Explicit Transactions
23. 1. 6. Forcing an exclusive table lock.
23. 1. 7. Transaction spread across batches:
23. 1. 8. Exception before transaction committing
23. 1. 9. statements coded as a transaction
23. 1. 10. A script with nested transactions
23. 1. 11. One batch that contains two transactions
23. 1. 12. What happens with stored proc transactions and exceptions?
23. 1. 13. Declare variable in a transaction
23. 1. 14. Inserting a Row into MyTable and Rolling Back the Transaction
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