Oracle提取中文字串拼音首字母函式

select get_pyjm(substr(

'北京',0
/* 獲取拼音簡碼函式 */

/* update pms_roleinfo set spell=get_pyjm(substr(role_name,0,1)) ; */
create
orreplace
function get_pyjm (p_name in varchar2)
return varchar2
as v_compare varchar2 (
100)
; v_return varchar2 (
4000);
begin
declare
function f_nlssort (p_word in varchar2)
return varchar2
asbegin
return nlssort (p_word,
'nls_sort=schinese_pinyin_m');
end;
begin
for i in1.
. length (p_name)
loop
v_compare := f_nlssort (substr (p_name, i,1)
);if v_compare >= f_nlssort (
'吖')
and v_compare <= f_nlssort (
'驁')
then
v_return := v_return ||
'a';
elsif v_compare >= f_nlssort (
'八')
and v_compare <= f_nlssort (
'簿')
then
v_return := v_return ||
'b';
elsif v_compare >= f_nlssort (
'嚓')
and v_compare <= f_nlssort (
'錯')
then
v_return := v_return ||
'c';
elsif v_compare >= f_nlssort (
'咑')
and v_compare <= f_nlssort (
'鵽')
then
v_return := v_return ||
'd';
elsif v_compare >= f_nlssort (
'妸')
and v_compare <= f_nlssort (
'樲')
then
v_return := v_return ||
'e';
elsif v_compare >= f_nlssort (
'發')
and v_compare <= f_nlssort (
'猤')
then
v_return := v_return ||
'f';
elsif v_compare >= f_nlssort (
'旮')
and v_compare <= f_nlssort (
'腂')
then
v_return := v_return ||
'g';
elsif v_compare >= f_nlssort (
'妎')
and v_compare <= f_nlssort (
'夻')
then
v_return := v_return ||
'h';
elsif v_compare >= f_nlssort (
'丌')
and v_compare <= f_nlssort (
'攈')
then
v_return := v_return ||
'j';
elsif v_compare >= f_nlssort (
'咔')
and v_compare <= f_nlssort (
'穒')
then
v_return := v_return ||
'k';
elsif v_compare >= f_nlssort (
'垃')
and v_compare <= f_nlssort (
'擽')
then
v_return := v_return ||
'l';
elsif v_compare >= f_nlssort (
'嘸')
and v_compare <= f_nlssort (
'椧')
then
v_return := v_return ||
'm';
elsif v_compare >= f_nlssort (
'拏')
and v_compare <= f_nlssort (
'瘧')
then
v_return := v_return ||
'n';
elsif v_compare >= f_nlssort (
'筽')
and v_compare <= f_nlssort (
'漚')
then
v_return := v_return ||
'o';
elsif v_compare >= f_nlssort (
'妑')
and v_compare <= f_nlssort (
'曝')
then
v_return := v_return ||
'p';
elsif v_compare >= f_nlssort (
'七')
and v_compare <= f_nlssort (
'裠')
then
v_return := v_return ||
'q';
elsif v_compare >= f_nlssort (
'亽')
and v_compare <= f_nlssort (
'鶸')
then
v_return := v_return ||
'r';
elsif v_compare >= f_nlssort (
'仨')
and v_compare <= f_nlssort (
'蜶')
then
v_return := v_return ||
's';
elsif v_compare >= f_nlssort (
'侤')
and v_compare <= f_nlssort (
'籜')
then
v_return := v_return ||
't';
elsif v_compare >= f_nlssort (
'屲')
and v_compare <= f_nlssort (
'鶩')
then
v_return := v_return ||
'w';
elsif v_compare >= f_nlssort (
'夕')
and v_compare <= f_nlssort (
'鑂')
then
v_return := v_return ||
'x';
elsif v_compare >= f_nlssort (
'丫')
and v_compare <= f_nlssort (
'韻')
then
v_return := v_return ||
'y';
elsif v_compare >= f_nlssort (
'帀')
and v_compare <= f_nlssort (
'咗')
then
v_return := v_return ||
'z';
endif
;end
loop
;return v_return;
end;
end;
 
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