rollback tran

SQL Server trigger details, SQL Server trigger Trigger is a method provided by SQL server to programmers and data analysts to ensure data integrity. It is a special stored procedure related to table events, its execution is not called by a program,

-- Delete the table use [20130823_Recource] godroptablemy_table1, my_table2, My_table3 -- create the table use [distinct] goif (exists (select * fromsys. objectswhere) Then (Idintprimarykeyidentity (1) -- Delete the table use [20130823_Recource] go

A trigger is a special stored procedure that is triggered when data in a specific table is inserted, deleted, or modified. It has more refined and complex data control capabilities than the standard functions of the database. The only difference

Translation of ghosting records 2 Link: http://www.sqlskills.com/blogs/paul/ghost-cleanup-redux/ I wrote an article earlierArticleInside the storage engine: Ghost cleanup in depth.Today, one of the students in the class I taught was asked about

Create proc sp_submit_topic 2 3 @ topicid int, 4 @ content varchar (1000 ), 5 @ uid varchar (20 ), 6 @ datetime 7 8 9 10 begin tran -- Development 11 12 insert into tb_re_topic 13 values 14 ( 15 @ topicid, @ uid, @ content, @ datetime 16) 17 18 if @

I suddenly remembered what a friend recently said to me: Turning around may mean a lifetime of life ....... The passage of time is always heartless and unintentional, so that you have no chance to appeal. In a twinkling of an eye, I wrote it last

1. TransactionsBegin Tran start transaction, commit Tran commit transaction, rollback Tran roll back transaction, save Tran save transactionThe first three are very familiar. The last save Tran should be well understood and researched.In fact, the

1. What is a transaction: a transaction is an inseparable logical unit of work. It is used as the smallest control unit to execute concurrent operations on the database system. All the database operation commands contained in the database are

Asp tutorial. net mssql stored procedure output parameter callSimplest syntaxCreate proc pAsSelect * from tbConcepts, advantages, and syntax of SQL Stored ProceduresBefore learning the program process, let's first understand what a stored procedure

From:http://www.cnblogs.com/hoojo/archive/2011/07/20/2111316.htmlA trigger is a special type of stored procedure that differs from the stored procedure we described earlier. Triggers are triggered primarily by an event that is automatically invoked

Deadlock in SQL Server refers to a state of permanent blocking between processes, and the following will show you how to detect SQL Server deadlocks in the hope of helping you. Deadlock (deadlock) refers to a state where processes are permanently

First step: First create two test tables, table goods_sort and goods Table Goods_sort: Creating and writing Test data IF EXISTS(SELECTName fromsysobjectsWHEREName='Goods_sort' andXtype='U') DROP TABLEDbo.goods_sort--Create a Product

Isolation level for SQL Server transactionsDatabase is to be shared by the vast number of customers to access, then in the database operation process is likely to occur in the following kinds of uncertainty.Update missing (Lost update)Two

ACID properties of a transactionatomicity Atomic NatureEach transaction works as an atomic unit (that is, it can no longer be split), which means that all databases change transactions, either successfully or unsuccessfully.SQL Server considers each

1. BusinessIn SQL Servce, a transaction is a unit of work that may contain queries and modify data, as well as modify data definitions, and can also display or implicitly define transaction boundariesShow definition transaction begin TRAN If you

Essay from:http://www.cnblogs.com/hoojo/archive/2011/07/20/2111316.htmlA trigger is like a small ledger that records what you did in the database, either created or deleted. Everything you do will touch the trigger.A trigger is a special type of

1. Four properties of a transactionAtomic Atomicity, consistency consistency, isolation isolation, persistent durability, acid properties.atomicity : A transaction must be a unit of complete work, either fully executed or not executed at

The result set--select query can be used as an alias as a virtual table with Select*from (Select*from score, grade where score.degree between Low and UPP) as Jibieta ble where rank= ' A '--create view (view can only be based on entity table) CREATE

A trigger is a special type of stored procedure that differs from the stored procedure we described earlier. Triggers are triggered primarily by an event that is automatically invoked to execute. The stored procedure can be called by the name of the

A trigger is a special type of stored procedure that differs from the stored procedure we described earlier. Triggers are triggered primarily by an event that is automatically invoked to execute. The stored procedure can be called by the name of the