Question

是否可以获得没有标志CI，CS，AI，AS的列整理字符串？

例如：

如果我们“Latin1_General_100_CS_AS”我需要“Latin1_General_100”而不需要“_CS_AS”。

感谢。

Answer 1

CS =区分大小写CI =大小写不敏感您需要拥有一个或另一个。

AS =重音敏感，AI =重音不敏感。

这些代码指定了如何排序。您需要选择CI或CS以及AS或AI

https://msdn.microsoft.com/en-us/library/ms143726.aspx

Answer 2

您可以使用SQL替换功能删除＆＃39; _CI＆＃39;的实例。在您的查询中。

例如，下面的代码将从排序规则名称中删除_CI和_AI。您可以使用类似的逻辑删除您不想要的其他字符。

SELECT name, REPLACE(REPLACE(name, '_CI',''), '_AI','') description FROM sys.fn_helpcollations();

Answer 3

在这里，您可以通过名称表（例如整理名称）排除任何您想要的falg。如果您愿意，您可以准备一个程序或功能，以便在批量生产中更轻松。

-- declaration of the input table
declare @input as table (name varchar(max));

-- declaration of the output table
declare @output as table (name varchar(max));

-- declaration of the table with flags you want to exclude from names
declare @exclude as table (flag varchar(max));

-- put flags you want to exclude into array
insert into @exclude (flag)
values ('CI'), ('CS'), ('AI'), ('AS');

-- put some collations into input table (as example for testing)
insert into @input
select distinct name
from sys.fn_helpcollations();

-- now we need to loop over all value in exclude table
declare @excludeCursor as cursor;
declare @flag as varchar(max);

set @excludeCursor = cursor for
select flag
from @exclude;

open @excludeCursor;

fetch next from @excludeCursor INTO @flag;
while @@FETCH_STATUS = 0
begin
    update @input
    set name = replace(name, concat('_', @flag), '')
    where name like concat('%_', @flag)
    or name like concat('%_', @flag, '_%')

    -- The where clause above ensure that you replace exactly the flag added to your exclude table.
    -- Without this caluse if you want to excldue for example a BIN flag and you have a BIN and BIN2 flags in your names
    -- then the '2' character from the BIN2 will stay as a part of your collation name.

    fetch next from @excludeCursor INTO @flag;
end

close @excludeCursor;
deallocate @excludeCursor;

-- prepare the output table with distinct values
insert into @output
select distinct name
from @input;

-- print the output
select *
from @output

获取没有标志CI，CS，AI，AS的列排序规则

3 个答案: