collation meaning in sql

SQL Server collation is not usually used a lot, perhaps many beginners are still relatively unfamiliar, but there An error should be often encountered: SQL Server database, in the cross-Library multiple table connection query, if two data The

Original link: http://blog.csdn.net/creathly003/article/details/7331461I. Error ANALYSIS:This error is due to inconsistent collation, we do a test, such as:CREATE TABLE #t1 (Name varchar (COLLATE) ALBANIAN_CI_AI_WS,Value int)CREATE TABLE #t2 (Name

When using MySQL to create data tables, it is unavoidable to involve the concept of character set and collation, which is not well understood before.The two days are not very busy, and I tidied up a bit.Let's take a look at character set and

When using MySQL to create data tables, it is unavoidable to involve the concept of character set and collation, which is not well understood before.Let's take a look at character set and collation. Character Set, which is the character set.We often

First, sorting rulesSometimes when we insert text into the database, there is a garbled "?", it is possible that we created the database is not set up collationTaking Chinese_prc_ci_as as an exampleThe first half of CHINESE_PRC refers to the

Sometimes when querying the database will be found (such as when the name of the duplicate check): The database query is not sensitive to case, that is, a and a are the same. That is to say select * from tabletest where name = ' A ' and select *

Today I see this SQL statement, I have heard it before, but I do not understand it, so make a note here:UserName varchar (COLLATE) chinese_prc_ci_as null1. First, COLLATE is a clause that can be applied to a database definition or column definition

In the process of using the database, there are always some special needs. Sometimes it is necessary to store Chinese characters, to be case-sensitive or to be sorted in the order of the English. This involves the choice of database arrangement

VS in the new lightweight database localdb, there is this, the developer will not have to install a large SQL Server, can easily test running small projects, since it is a lightweight database, it abandoned a large body, of course, will also be

vs2012,vs2013 new Lightweight database localdb, with this, developers will no longer have to install a large SQL server, can easily test running small projects, since it is a lightweight database, it abandoned a large body, of course, will also be