collation

问题 How do I set lc_monetary to show money (docs) data type as EUR? I tried: change postgresql.conf and set lc_monetary="de_DE.UTF-8@euro . PG will not start with this change (currently set to en_US.UTF-8 ) do the same through pgAdmin and psql (using set ) and I get ERROR: invalid value for parameter "lc_monetary" My current collation is en_US.UTF-8 . 回答1: Locales depend on the operating system. Check what locales are available select * from pg_collation where collname ~ any(array['DE', 'FR', 'GR

问题 I have 2 different strings ( XXÈ and XXE ). Is there any way to compare them using a collation (for this case, it would be UTF8 general CI - I need them to be equal)? I've seen few examples involving MSSQL or SQLLite - but this would add an unnecessary dependency to my project. So, my question is - is there any way to do this in pure .net (especially c#)? Update: Let's take any decent SQL engine as an example. You can create a table and you can select the collation for the table. In our case,

问题 This question is similar to How to emulate MySQLs utf8_general_ci collation in PHP string comparisons but I want the function for vb.net rather than PhP. Recently I make a lot of supposedly unique key. Some of the keys are equivalent under UTF8 unicode collation. For example, look at these 2 key: byers-street-bistro__38.15_-79.07 byers-street-bistro‎__38.15_-79.07 If I paste that into front page, and look at the source code you'll see byers-street-bistro__38.15_-79.07 byers-street-bistro‎__38

问题 Also what's the vb.net function that will map all those different characters into their most standard form. For example, tolower would map A and a to the same character right? I need the same function for these characters german ß === s Ü === u Χιοσ == Χίος Otherwise, sometimes I insert Χιοσ and latter when I insert Χίος mysql complaints that the ID already exist. So I want to create a unique ID that maps all those strange characters into a more stable one. 回答1: For the encoding aspect of the

问题 In my mysql set up, tables and their columns are automatically given utf8_unicode_ci collation. However, there is one table where I want no collation. How do you set that up? Also, is it possible to remove collation from a table? Cheers 回答1: You can change the collation of a column using alter table, for example assuming your column is a VARCHAR(40) : alter table YourTable modify YourColumn varchar(40) collate utf8_bin; If you don't want any collation at all change the column type to binary,

问题 I found alot of answers about collation and accent insensitive search, read like 1000 of posts and articles about this problem, but did not find the answer. Does anybody know how to force mysql to search accent insensitive with ALL polish characters? Maybe anybody got a compiled collation file for that (Debian)? Please note, that: Setting collation to utf8_general_ci does not help. It does not support Ł properly. But it does ruin search order. Setting collation to utf8_unicode_ci does not

问题 I have a really weird issue with Sql queries on unicode data. Here's what I've got: Sql Server Express 2008 R2 AS Table containing chinese characters/words/phrases (100,000 rows) When I run the following, I get the correct row + 36 other rows returned... when it should only be the one row: SELECT TOP 1000 [ID] ,[MyChineseColumn] ,UNICODE([MyChineseColumn]) FROM [dbo].[MyTableName] WHERE [MyChineseColumn]= N'㐅' As you'd expect, the row with 㐅 is returned, but also the following: 〇 , 宁 , 㮸 and

问题 Query select 'T' union all select 'Z' order by 1 returns Z T but correct order should be T Z Tried in 3 different OSes Windows 2003 server "PostgreSQL 9.1.3, compiled by Visual C++ build 1500, 32-bit" Windows 7 "PostgreSQL 9.2.1, compiled by Visual C++ build 1600, 32-bit" Debian "PostgreSQL 9.1.2 on x86_64-unknown-linux-gnu, compiled by gcc-4.4.real (Debian 4.4.5-8) 4.4.5, 64-bit" Database settings are: Collation: et_EE.UTF-8 Character type: et_EE.UTF-8 How to fix this? Update Databases were

问题 I am on SQL Server 2008 R2 dev, server default collation is Cyrillic_General_CI_AS Executing in SSMS SELECT 'éÉâÂàÀëËçæà' COLLATE Latin1_General_CS_AS or SELECT 'éÉâÂàÀëËçæà' COLLATE Latin1_General_CI_AI outputs eEaAaAeEc?a on(in ocntext of/use dbName) of database with default collation Cyrillic_General_CI_AS éÉâÂàÀëËçæà on database with default collation Latin1_General_CI_AS Why? 回答1: Those character literals in your queries are first converted to varchar strings under whatever collation the

问题 I want to use UUID() to generate primary keys. After some investigation, I thought this should work: INSERT INTO aTable (`id`) VALUES (UNHEX(REPLACE(UUID(),'-',''))); Where id is of the type BINARY(16) . Unfortunately, UUID() returns a value which uses the utf8_general_ci collation. The rest of my database uses utf8_unicode_ci , which means I get the following error: #1270 - Illegal mix of collations (utf8_general_ci,COERCIBLE), (utf8_unicode_ci,COERCIBLE), (utf8_unicode_ci,COERCIBLE) for