#Whats collate mean code
#Whats collate mean windows

Kara Schechtman, The Atlantic, For many months, perhaps years, the work will continue to match DNA samples, collate the scraps, establish the cause of death, and determine what crimes may have been committed by the Russian forces who fled a week ago. Over the next few weeks I’m going to do a number of different posts around the surprisingly deep subject of collation.Recent Examples on the Web Generally, states seemed to choose the method that allowed them to collate numbers most quickly within the constraints of their case surveillance and death infrastructures.

#Whats collate mean code

Because they have the additional byte per character they can hold a large enough number of possible characters that a code page isn’t really necessary. Unicode datatypes (nchar/nvarchar/ntext) don’t have the same problem. So for example Hebrew collations will use an entirely different set of characters than English ones. The code page determines what character set is available. Because non-Unicode types only have one byte per character they are more restricted in the number of characters available. In addition to the sort/comparison options, for non-Unicode data types (char/varchar/text) collation also determines the code page. I honestly found the differences rather confusing so I’ll let you read up on them yourself.

#Whats collate mean windows

Windows collations, Binary collations, and SQL Server collations. SQL Server supports three different collation sets. It is supported in 90 level and up collations. But basically this is new as of SQL 2012 and it supports UTF16 characters that require more than a 16bit (2 byte) word. UTF-16 Supplementary Characters (SC) – Thanks to Bob Beauchemin for pointing this one out to me.If it isn’t included then the collation is not width sensitive

If WS is included then the collation is width sensitive. This determines if the storage (one byte or two) is taken into account in the sort/comparison.

Width sensitivity (WS) – I find this an interesting option.

If it is not specified then they are treated the same. If KS is specified then the sort/comparison will be treat the kana characters differently. There are two types of kana characters, Hiragana and Katakana.

Kana sensitivity (KS) – This option is specific to Japanese kana characters.

Accent sensitivity (AS/AI) – Will the sort/comparison take into account accented characters (a/ấ).

If CS (case sensitive) it will and if CI (case insensitive) it will not.

Case sensitivity (CS/CI) – Will the sort/comparison take case (upper/lower) of the characters into account.

So Collation_CS_AS_KS_WS_SC is case sensitive, accent sensitive, kana sensitive, width sensitive and supplementary character sensitive. They are specified by appending them to the collation name along with a _. Prior to SQL Server 2012 there were four options associated with collation with a 5th added in SQL Server 2012.

It’s something like 10 pages long which just goes to show I wasn’t exaggerating about the depth of the subject. The information I’m going over is mostly found in BOL under Collation and Unicode Support. What is a collation? Collation is a property assigned to any character field that defines the sort and comparison rules for the field.

So I thought I would go over some of what I found out. As I read I started to realize that for a seemingly simple subject there was a lot to it. I had a recent run in with collation problems and it got me started reading.