function to take Chinese pinyin in SQL Server

Create function fun_getpy
(
@str nvarchar (4000)
)
Returns nvarchar (4000)
As
Begin
DECLARE @word nchar (1), @PY nvarchar (4000)

Set @PY = '

While Len (@str) >0
Begin
Set @word =left (@str, 1)

--If non-Chinese characters, return the original character
Set @PY = @PY + (case when Unicode (@word) between 19968 and 19968+20901
Then (
Select top 1 PY
From
(
Select ' A ' as Py,n ' 驁 ' as Word
UNION ALL SELECT ' B ', N ' book '
UNION ALL SELECT ' C ', N ' wrong '
UNION ALL SELECT ' D ', N ' 鵽 '
UNION ALL SELECT ' E ', N ' 樲 '
UNION ALL SELECT ' F ', N ' 鰒 '
UNION ALL SELECT ' G ', N ' hiker '
UNION ALL SELECT ' H ', N ' 夻 '
UNION ALL SELECT ' J ', N ' 攈 '
UNION ALL SELECT ' K ', N ' 穒 '
UNION ALL SELECT ' L ', N ' 鱳 '
UNION ALL SELECT ' M ', N ' temperature '
UNION ALL SELECT ' n ', n ' 桛 '
UNION ALL SELECT ' O ', N ' 漚 '
UNION ALL SELECT ' P ', N ' exposure '
UNION ALL SELECT ' Q ', N ' 囕 '
UNION ALL SELECT ' R ', N ' 鶸 '
UNION ALL SELECT ' S ', N ' 蜶 '
UNION ALL SELECT ' T ', N ' 籜 '
UNION ALL SELECT ' W ', N ' 鶩 '
UNION ALL SELECT ' X ', N ' 鑂 '
UNION ALL SELECT ' Y ', N ' rhythmic '
UNION ALL SELECT ' Z ', N ' out '
) T
where word>= @word collate chinese_prc_cs_as_ks_ws
ORDER BY PY ASC
)
else @word
End
Set @str =right (@str, Len (@str)-1)
End

Return @PY

End

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