db2 去除全角字符
最近在做报表，需求中要求把一字段剔除全角字符然后做相似检查，再网上搜了好多关于db2判断是否全角字符的例子，然后写了下面一函数，还好使，不知道有没有bug存在，贴出来，望大牛指正........CREATE FUNCTION f_getIdNum(inStr VARCHAR(255))
RETURNS VARCHAR(255)
LANGUAGE SQL
BEGIN ATOMIC
DECLARE outStr VARCHAR(255) DEFAULT '';
DECLARE k INT DEFAULT 1;
----判断是否存在全角字符，存在则进行剔除
if(length(inStr) != length(inStr, CODEUNITS32)) then
WHILE(k<=length(inStr)) do
if(ascii(substr(inStr,k,1))< 128) then
set outStr = outStr || substr(inStr,k,1);
end if;
set k = k+1;
END WHILE;
ELSE
SEToutStr = outStr || inStr;
end if;
RETURN outStr;
END;
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