SQL中的特殊字符问题

Question

I have a table as following

Create Table Test(Name NVARCHAR(100))

Insert Into Test(Name) values (N'ἀἁἃἄὠἀἁἃἄὠἀἁἃἄὠἀἁἃἄὠἀἁἃἄὠἀἁἃἄὠἀἁἃἄὠ1,')
Insert Into Test(Name) values (N'ἀἁἃἄὠἀἁἃἄ')
Insert Into Test(Name) values (N'Test')

Select * from ED.Test WHERE Name like N'ἀἁἃἄὠἀἁἃἄ'

This above Select query should return two results but now it is returning only one result.

This statement

Select * from ED.Test WHERE Name like '%ἀἁἃἄὠἀἁἃἄ%' 

not returning any result.

Select * from ED.Test WHERE Name like N'%ἀἁἃἄὠἀἁἃἄ%' 

returning all result.

What am I missing?

Answer 1

For special languages characters you should use COLLATE .

Select * from Test 
WHERE Name  COLLATE Greek_100_CS_AS_KS_WS_SC  like N'ἀἁἃἄὠἀἁἃἄ%'

Sql Fiddle Demo

For your solution I used collation_name Greek_100_CS_AS_KS_WS_SC

Below query returns all possible collation_name

SELECT *
FROM ::fn_helpcollations()

You can chose which collation_name suits you.