incorrect Charindex results for unicode text

  • For the following i am getting incorrect charindex in case of 2nd select charindex('a',N'aृ'). If any character preceds 'ृ ' character in Unicode, i am not able to get the Charindex correctly

    For the followin 1st stament return 1 as char index which is correct.

    for the 2nd it is retunring 0 as char index which is incorrect. The reason could be Unicode and preceds by special char 'ृ '

    for the 3rd getting the correct result 1. in this case also it is unicode but special char 'ृ ' is not the preceding charcter , it is at 3rd place

    for the 4th with char index for b is not coming becuase it is preceded with special char 'ृ '.

    Can some body explain me what is the issue with 2nd & 4th queries returning wrong results.

    select charindex('a','aृ')

    select charindex('a',N'aृ')

    select charindex('a',N'abृ')

    select charindex('b',N'abृ')

    Thanks in Advance

  • Collation, Collation, Collation 😉

    try this : select CHARINDEX('a',N'a?' COLLATE latin1_general_bin)

    Your db collation most probably not compatible with the unicode characters you are using.

    MM



    select geometry::STGeomFromWKB(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  • Thanks for the early Reply & it is working with the collation mentioned by you.

    I had one doubt here. How it is working with default collation for non unicode String for the same character.

  • because your default collation is compatible with non-unicode characters

    MM



    select geometry::STGeomFromWKB(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