MySQL拼音首字母查詢

最近乙個專案中有模組需要實現拼音首字母查詢功能

實現如下：寫2個函式

第乙個：函式名稱：firstpinyin

begin

declare v_return varchar(255);
set v_return = elt(interval(conv(hex(left(convert(p_name using gbk),1)),16,10),
0xb0a1,0xb0c5,0xb2c1,0xb4ee,0xb6ea,0xb7a2,0xb8c1,0xb9fe,0xbbf7,
0xbfa6,0xc0ac,0xc2e8,0xc4c3,0xc5b6,0xc5be,0xc6da,0xc8bb,
0xc8f6,0xcbfa,0xcdda,0xcef4,0xd1b9,0xd4d1),   
'a','b','c','d','e','f','g','h','j','k','l','m','n','o','p','q','r','s','t','w','x','y','z');
return v_return;
end

begin

declare v_compare varchar(255);
declare v_return varchar(255);
declare i int;
set i = 1;
set v_return = '';
while i < length(p_name) do
set v_compare = substr(p_name, i, 1);
if (v_compare != '') then
#set v_return = concat(v_return, ',', v_compare);
set v_return = concat(v_return, fristpinyin(v_compare));
#set v_return = firstpinyin(v_compare);
end if;
set i = i + 1;
end while;
if (isnull(v_return) or v_return = '') then
set v_return = p_name;
end if;
return v_return;
end

select * from 要查詢的表名   where pinyin(表字段) like '%d%'

例子：select * from tbl_customer tc where pinyin(tc.customer_name) like '%d%'

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