轉載了好幾個地方，很難確定最早的出處。
將源碼貼出來先。
?1using?System;?
?2using?System.Text;?
?3using?System.IO;?
?4
?5namespace?ts
?6{?
?7????class?test
?8????{?
?9????????private?static?string[]?startChars?=?{"啊",?"芭",?"擦","搭","蛾","發","噶","哈",
"擊","擊","喀","垃","媽","拿","哦","啪","期","然",?"撒","塌","挖","挖","挖","昔","壓","匝"};?
10????????private?static?string[]?endChars?=?{"澳",?"怖",?"錯","墮","貳","咐","過","禍",
"啊","駿","闊","絡","穆","諾","漚","瀑","群","弱",?"所","唾","啊","啊","誤","迅","孕","座"};?
11
12????????/**////?<summary>?
13????????///?根據字符和對應的中文字符,轉成SQL查詢條件?
14????????///?</summary>?
15????????///?<param?name="cChar">要轉化的字符,[A-Z]</param>?
16????????///?<param?name="strFieldName">條件左值</param>?
17????????///?<returns>SQL條件</returns>?
18????????///?<remarks>?Sxf?2001-1-4?*****?JY?2002-1-4?</remarks>?
19????????public?static?string?GetCharCondition(char?cChar,?string?strFieldName)?
20????????{?
21????????????string?strWord;?
22????????????int?Index?=?(int)(char.ToUpper(cChar))?-?(int)'A';?
23????????????if?(Index?>=?0?&&?Index?<?26)?
24????????????????strWord?=?startChars[Index];?
25????????????else?
26????????????????strWord?=?startChars[0];?
27????????????
28????????????//return?string.Format("(({0}>='{1}'?AND?{0}<'[')?OR?({0}?>=?'{3}'?AND?{0}?<?'{{')?OR?{0}>='{2}')",??
29????????????//strFieldName,?char.ToUpper(cChar),?strWord,?char.ToLower(cChar));?
30????????????
31????????????return?string.Format("(({0}?>=?'{3}'?AND?{0}?<=?'zzzzzzzz')?OR?{0}>='{2}')",??
32????????????strFieldName,?char.ToUpper(cChar),?strWord,?char.ToLower(cChar));?
33????????}?
34
35????????/**////?<summary>?
36????????///?將指定字段值的每個字符分割，這樣可以生成同音查詢的SQL?
37????????///?</summary>?
38????????///?<param?name="fieldName">字段名</param>?
39????????///?<param?name="fieldValue">字段值</param>?
40????????///?<returns>生成的可以進行同音查詢的SQL</returns>?
41????????public?static?string?GetCharFullCondition(string?fieldName,?string?fieldValue)?
42????????{?
43????????????StringBuilder?sql?=?new?StringBuilder(1024);?
44????????????int?i?=?1;?
45????????????foreach?(char?c?in?fieldValue)?
46????????????{?
47????????????????if?(i?>?1)?
48????????????????????sql.Append("?AND?");?
49????????????????int?index?=?(int)(char.ToUpper(c))?-?(int)'A';?
50????????????????string?startWord,?endWord;?
51????????????????if?(index?>=?0?&&?index?<?26)?
52????????????????{?
53????????????????????startWord?=?startChars[index];?
54????????????????????endWord?=?endChars[index];?
55????????????????}?
56????????????????else?
57????????????????{?
58????????????????????startWord?=?startChars[0];?
59????????????????????endWord?=?endChars[0];?
60????????????????}?
61????????????????string?subStr?=?String.Format("SUBSTRING({0},?{1},?{2})",?fieldName,?i,?1);?
62????????????????sql.AppendFormat("({0}?BETWEEN?'{1}'?AND?'{2}')",?subStr,?startWord,?endWord);?
63????????????????++i;?
64????????????}?
65
66????????????return?sql.ToString();?
67????????}?
68????}?
69}? ?

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