insert ignore sql server

Insert Syntax INSERT [Low_priority | Delayed | High_priority] [IGNORE] [Into] tbl_name [(Col_name,...)] VALUES ({expr | DEFAULT},...), (...),... [on DUPLICATE KEY UPDATE col_name=expr, ...] Or: INSERT [Low_priority | Delayed | High_priority]

This article refers to the link: http://blog.csdn.net/jbboy/article/details/46828917"I think the article is more suitable for learning and reference, it is worth a look"This article to provide you with three kinds of in MySQL to avoid repeated

This article to provide you with three kinds of in MySQL to avoid repeated insertion record method, mainly refers to the Ignore,replace,on DUPLICATE key update three methods, you can try to reference.Case one: Using the Ignore keywordIf the

This article to provide you with three kinds of in MySQL to avoid repeated insertion record method, mainly refers to the Ignore,replace,on DUPLICATE key update three methods, you can try to reference.Case one: Using the Ignore keywordIf the

Original: Does SQL Server really go to update or ignore when the update value is the same as the original value?Consider the following scenario:When the update value is the same as the original value, does SQL Server really go to update or ignore it?

Mysqlinsert operations (DELAYED, IGNORE, ONDUPLICATEKEYUPDATE) bitsCN.com INSERT syntax INSERT [LOW_PRIORITY | DELAYED | HIGH_PRIORITY] [IGNORE] [INTO] tbl_name [(col_name,...)] VALUES ({expr | DEFAULT },...),(...),... [On duplicate key update

DELAYED is used as a quick insert, but it is not very concerned about the invalidation and improves the insert performance. DELAYED is used as a quick insert, but it is not very concerned about the invalidation and improves the insert performance.

Consider the following: When the update value is the same as the original value, does SQL Server actually update or ignore it? For example: UpdateTbnameSetName='ABC' --The original value of name is ABC.WhereID=1 Another example is:

stored procedure authoring experience and optimization measures One, suitable for the reader object: Database development programmer, database of a lot of data, involving the SP (stored procedure) optimization of project developers, the database has

When I use PHP to manipulate the database today, I find that the Chinese characters inserted in the SQL Server 2008 database are garbled, and here are some of the things I started with: The development environment is the encoding of the