身份證校驗，檢查身份證號碼輸入是否正確

中國廣東省

深圳市龍華新區民治街道溪山美地

518131

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文件始創於2010-11-18

文件出處:

$date: 2013-04-10 15:03:49 +0800 (wed, 10 apr 2013) $

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該函式能夠檢查身份證號碼是否正確

create definer=`neo`@`%` function `check_id_number`(`idnumber` char(18))

returns enum('true','false')
language sql
not deterministic
no sql
sql security definer
comment ''
begin
declare status enum('true','false') default 'false';
declare verify char(1);
declare sigma int;
declare remainder int;
if length(idnumber) = 18 then
set sigma = cast(substring(idnumber,1,1) as unsigned) * 7
+cast(substring(idnumber,2,1) as unsigned) * 9
+cast(substring(idnumber,3,1) as unsigned) * 10
+cast(substring(idnumber,4,1) as unsigned) * 5
+cast(substring(idnumber,5,1) as unsigned) * 8
+cast(substring(idnumber,6,1) as unsigned) * 4
+cast(substring(idnumber,7,1) as unsigned) * 2
+cast(substring(idnumber,8,1) as unsigned) * 1
+cast(substring(idnumber,9,1) as unsigned) * 6
+cast(substring(idnumber,10,1) as unsigned) * 3
+cast(substring(idnumber,11,1) as unsigned) * 7
+cast(substring(idnumber,12,1) as unsigned) * 9
+cast(substring(idnumber,13,1) as unsigned) * 10
+cast(substring(idnumber,14,1) as unsigned) * 5
+cast(substring(idnumber,15,1) as unsigned) * 8
+cast(substring(idnumber,16,1) as unsigned) * 4
+cast(substring(idnumber,17,1) as unsigned) * 2;
set remainder = mod(sigma,11);
set verify = (case remainder
when 0 then '1' when 1 then '0' when 2 then 'x' when 3 then '9'
when 4 then '8' when 5 then '7' when 6 then '6' when 7 then '5'
when 8 then '4' when 9 then '3' when 10 then '2' else '/' end
);end if;
if right(idnumber,1) = verify then
set status = 'true';
end if;
return status;
end

mysql> select check_id_number('330702198003090915');

+---------------------------------------+
| check_id_number('330702198003090915') |
+---------------------------------------+
| true                                  |
+---------------------------------------+
1 row in set (0.01 sec)

mysql> select check_id_number('33070219800309');

+-----------------------------------+
| check_id_number('33070219800309') |
+-----------------------------------+
| false                             |
+-----------------------------------+
1 row in set (0.00 sec)	
mysql> select check_id_number('33070219800309091457889');
+--------------------------------------------+
| check_id_number('33070219800309091457889') |
+--------------------------------------------+
| false                                      |
+--------------------------------------------+
1 row in set, 1 warning (0.00 sec)

mysql> select check_id_number('330702198003090914');

+---------------------------------------+
| check_id_number('330702198003090914') |
+---------------------------------------+
| false                                 |
+---------------------------------------+
1 row in set (0.00 sec)

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