oracle 将科学计数法数据转换为非科学计数法数据

oracle 自定义函数:

CREATE OR REPLACE FUNCTION ConvertNumeric(rawData VARCHAR2)
--用于返回转换科学计算法dhx
RETURN   VARCHAR2
IS
finalData VARCHAR2();
EIndex INT;
BEGIN
   EIndex := ;
   EIndex := instr(upper(rawData),'E');
   if EIndex> then
      if (substr(rawData,EIndex+,)='+' and length(substr(rawData,,EIndex-))> and length(substr(rawData,EIndex+))>) then
         finalData:=to_char(to_number(substr(rawData,,EIndex-))*power(,to_number(substr(rawData,EIndex+))));
      elsif (substr(rawData,EIndex+,)='-' and length(substr(rawData,,EIndex-))> and length(substr(rawData,EIndex+))> )then
         finalData:=to_char(to_number(substr(rawData,,EIndex-))/power(,to_number(substr(rawData,EIndex+))),'fm99999999999999999999990.9999999999999999');
      else
         finalData:=rawData;
      end if;
   else
          finalData:=rawData;
   end if;
   RETURN finalData;
   EXCEPTION
       WHEN OTHERS THEN
            finalData:=rawData;
   RETURN finalData;
END ConvertNumeric;

用于返回转换科学计算法