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collate Latin1_General_CI_AI - select distinct from MSSQL Table
Posted on 2012-12-28
Hello,
Is there a way to select 'distinct' region names with foreign characters please? I am looking to create a list of regions and am trying to avoid getting duplicates if they are wrongly typed in, or if they have foreign characters, for example, one user might have added a property in the 'Cote d'Azur' and another may have added a property in 'Cóte d'Azur' - with an accent on the 'o', but Idon't want to list *both* regions in my list as they are essentially the same region...
Thanks in advance for your help!
Is there a way to select 'distinct' region names with foreign characters please? I am looking to create a list of regions and am trying to avoid getting duplicates if they are wrongly typed in, or if they have foreign characters, for example, one user might have added a property in the 'Cote d'Azur' and another may have added a property in 'Cóte d'Azur' - with an accent on the 'o', but Idon't want to list *both* regions in my list as they are essentially the same region...
Thanks in advance for your help!
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3 Comments
I never had such problem but try to translate the field to an accent-insensitive collation:
if it does not work the dirty solution is
select
DISTINCT some_field COLLATE LATIN1_GENERAL_CS_AI
from
table_1
if it does not work the dirty solution is
CREATE FUNCTION dbo.fnCharToAscii
(
@Char AS VARCHAR
)
RETURNS
VARCHAR
AS
BEGIN
IF (@Char IS NULL)
RETURN ''
-- Process control and DEL chars.
IF (ASCII(@Char) < 32) OR (ASCII(@Char) = 127)
RETURN ''
-- Return printable 7-bit ASCII chars as is.
-- UPDATE TO DELETE NON-ALPHA CHARS.
IF (ASCII(@Char) >= 32) AND (ASCII(@Char) < 127)
RETURN @Char
-- Process 8-bit ASCII chars.
RETURN
CASE ASCII(@Char)
WHEN 128 THEN 'E'
WHEN 129 THEN '?'
WHEN 130 THEN ','
WHEN 131 THEN 'f'
WHEN 132 THEN ','
WHEN 133 THEN '.'
WHEN 134 THEN '+'
WHEN 135 THEN '+'
WHEN 136 THEN '^'
WHEN 137 THEN '%'
WHEN 138 THEN 'S'
WHEN 139 THEN '<'
WHEN 140 THEN 'C'
WHEN 141 THEN '?'
WHEN 142 THEN 'Z'
WHEN 143 THEN '?'
WHEN 144 THEN '?'
WHEN 145 THEN ''''
WHEN 146 THEN ''''
WHEN 147 THEN '"'
WHEN 148 THEN '"'
WHEN 149 THEN '-'
WHEN 150 THEN '-'
WHEN 151 THEN '-'
WHEN 152 THEN '~'
WHEN 153 THEN '?'
WHEN 154 THEN 's'
WHEN 155 THEN '>'
WHEN 156 THEN 'o'
WHEN 157 THEN '?'
WHEN 158 THEN 'z'
WHEN 159 THEN 'Y'
WHEN 160 THEN ' '
WHEN 161 THEN 'i'
WHEN 162 THEN 'c'
WHEN 163 THEN 'L'
WHEN 164 THEN '?'
WHEN 165 THEN 'Y'
WHEN 166 THEN '|'
WHEN 167 THEN '$'
WHEN 168 THEN '^'
WHEN 169 THEN 'c'
WHEN 170 THEN 'a'
WHEN 171 THEN '<'
WHEN 172 THEN '-'
WHEN 173 THEN '-'
WHEN 174 THEN 'R'
WHEN 175 THEN '-'
WHEN 176 THEN 'o'
WHEN 177 THEN '+'
WHEN 178 THEN '2'
WHEN 179 THEN '3'
WHEN 180 THEN ''''
WHEN 181 THEN 'm'
WHEN 182 THEN 'P'
WHEN 183 THEN '-'
WHEN 184 THEN ','
WHEN 185 THEN '1'
WHEN 186 THEN '0'
WHEN 187 THEN '>'
WHEN 188 THEN '?'
WHEN 189 THEN '?'
WHEN 190 THEN '?'
WHEN 191 THEN '?'
WHEN 192 THEN 'A'
WHEN 193 THEN 'A'
WHEN 194 THEN 'A'
WHEN 195 THEN 'A'
WHEN 196 THEN 'A'
WHEN 197 THEN 'A'
WHEN 198 THEN 'A'
WHEN 199 THEN 'C'
WHEN 200 THEN 'E'
WHEN 201 THEN 'E'
WHEN 202 THEN 'E'
WHEN 203 THEN 'E'
WHEN 204 THEN 'I'
WHEN 205 THEN 'I'
WHEN 206 THEN 'I'
WHEN 207 THEN 'I'
WHEN 208 THEN 'D'
WHEN 209 THEN 'N'
WHEN 210 THEN 'O'
WHEN 211 THEN 'O'
WHEN 212 THEN 'O'
WHEN 213 THEN 'O'
WHEN 214 THEN 'O'
WHEN 215 THEN 'x'
WHEN 216 THEN 'O'
WHEN 217 THEN 'U'
WHEN 218 THEN 'U'
WHEN 219 THEN 'U'
WHEN 220 THEN 'U'
WHEN 221 THEN 'Y'
WHEN 222 THEN 'b'
WHEN 223 THEN 'B'
WHEN 224 THEN 'a'
WHEN 225 THEN 'a'
WHEN 226 THEN 'a'
WHEN 227 THEN 'a'
WHEN 228 THEN 'a'
WHEN 229 THEN 'a'
WHEN 230 THEN 'a'
WHEN 231 THEN 'c'
WHEN 232 THEN 'e'
WHEN 233 THEN 'e'
WHEN 234 THEN 'e'
WHEN 235 THEN 'e'
WHEN 236 THEN 'i'
WHEN 237 THEN 'i'
WHEN 238 THEN 'i'
WHEN 239 THEN 'i'
WHEN 240 THEN 'o'
WHEN 241 THEN 'n'
WHEN 242 THEN 'o'
WHEN 243 THEN 'o'
WHEN 244 THEN 'o'
WHEN 245 THEN 'o'
WHEN 246 THEN 'o'
WHEN 247 THEN '-'
WHEN 248 THEN 'o'
WHEN 249 THEN 'u'
WHEN 250 THEN 'u'
WHEN 251 THEN 'u'
WHEN 252 THEN 'u'
WHEN 253 THEN 'y'
WHEN 254 THEN 'b'
WHEN 255 THEN 'y'
END
RETURN ''
END
to cover "all" typos, you need to have a table that does cover the typos, and gives the correct alternative, and you return that value.
this however also means that you need to "catch" and handle all the values that are NOT yet in that table on a daily basis.
there is not "magic" solution for this; though you migth check out SOUNDEX() function to see if it would help
this however also means that you need to "catch" and handle all the values that are NOT yet in that table on a daily basis.
there is not "magic" solution for this; though you migth check out SOUNDEX() function to see if it would help
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