sql commit example

Start transaction,COMMIT, AndROLLBACKSyntax From: http://dev.mysql.com/doc/refman/5.0/en/commit.html Of course, the article noted from MySQL, but MySQL, SQL Server, Oracle start tracmsaction, commit, and rollback syntax are no problem in DML. I hope

[Oracle]-[impact of COMMIT on indexes]-from trace, we can see the impact of COMMIT on indexes. Recently, due to work requirements, there is a task involving data migration, therefore, I have been paying attention to the time-consuming issue of

Distributed transactions, like local transactions, contain atomicity (atomicity), consistency (consistency), isolation (isolation), and persistence (durability). Two-stage commit is an important method to ensure atomicity in distributed transaction.

Start transaction, commit and rollback syntaxStart Transaction | Begin [Work]commit [Work] [and [No] chain] [[No] release]rollback [work] [and [No] chain] [[No] release]set autocommit = { 0 | The 1}start transaction or BEGIN statement can begin a

BEGIN TRANSACTIONMarks the starting point for an explicit local transaction. BEGIN TRANSACTION The @ @TRANCOUNT by 1 increments.BEGIN TRANSACTION represents a point where data referenced by a connection is logically and physically consistent at that

Start transaction, commit, and rollback syntaxStart transaction | begin [work] commit [work] [and [no] chain] [[no] release] rollback [work] [and [no] chain] [[no] release] set autocommit = {0 | 1} start transaction or begin statement can start a

First, causesBegin or start transaction start a transactionROLLBACK TRANSACTION RollbackCommit TRANSACTION AcknowledgementThe interpretation of a transaction is as follows: A transaction consists of one or more SQL statements that act as a single

The entire transaction can be written or revoked using a simple ROLLBACK and COMMIT statement with a reserved point. However, just for simple transactions to do this, more complex transactions may require partial commit or fallback. For example, the

MS SQL Server Query optimization methodThere are many reasons for the slow speed of queries, which are common1, no indexes, or no indexes (this is the most common problem with query slowness, is the flaw in programming)2, I/o throughput is small,

1, Transaction commit mode modification: Modify the database submission mode for 0[ manual submission ]memset (SQL, 0x00, sizeof (SQL));memcpy (SQL, "set autocommit=0;", 17);if (mysql_query (sock, SQL)) {sprintf (g_actrcmsg, " shutdown autocommit