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我有一个临时表，其中包含我希望导出到具有固定位置的平面文件中的应用程序数据。我正在努力的是数字列 account_numbers 中的一些值是空的。在导出期间，空值行不替换为空格，而是设置为空。我怀疑我必须在填充之前将列转换为 char ，但它似乎无法解决问题。我错过了什么？

RPAD(To_char(i.Account_Number),11,' ')

创建表插入数据： 

create table V_APPLICATION_INSTANCE
(
  account_number NUMBER(19),
  created_date   TIMESTAMP(6),
  decision       VARCHAR2(40),
  name           VARCHAR2(40)
);

insert into V_APPLICATION_INSTANCE (ACCOUNT_NUMBER, CREATED_DATE, DECISION, NAME)
values (1679669315, '09-SEP-16 10.43.51.932000 AM', 'APPROVED', 'TAF2214');

insert into V_APPLICATION_INSTANCE (ACCOUNT_NUMBER, CREATED_DATE, DECISION, NAME)
values (null, '31-AUG-16 12.41.53.331000 PM', 'APPROVED', 'TAF2234');

insert into V_APPLICATION_INSTANCE (ACCOUNT_NUMBER, CREATED_DATE, DECISION, NAME)
values (1528296849, '02-SEP-16 12.00.32.008000 PM', 'APPROVED', 'TAF1234');

insert into V_APPLICATION_INSTANCE (ACCOUNT_NUMBER, CREATED_DATE, DECISION, NAME)
values (null, '31-AUG-16 05.05.30.433000 PM', 'APPROVED', 'TAF1234');

导出到平面文件：

Declare
  pFile Utl_File.file_type;
  fLine Varchar2(1024);

Begin

  pFile := UTL_FILE.fopen('USER_TEMP', 'APPLIC_EXPORT.txt', 'w');

  For i in (Select V.ACCOUNT_NUMBER ,V.CREATED_DATE,TRIM(V.DECISION) DECISION,TRIM(V.NAME) NAME From V_APPLICATION_INSTANCE V) 
  Loop

    fLine := RPAD(i.Account_Number,11,' ') || ' ' || RPAD(i.Created_Date,30,' ') || ' ' ||
             RPAD(i.Decision,25,' ') || ' ' || RPAD(i.Name,50,' ');
    UTL_FILE.put_line(pFile, convert(fLine, 'WE8ISO8859P1', 'UTF8'));

  End Loop;

  UTL_FILE.fclose(pFile);
End;

输出：

 ===================================================== == == == =========== == == == == == == == == == ===== 
  1679669315  09-SEP-16 10.43.51.932000 AM   APPROVED              TAF2214                                   
   31-AUG-16 12.41.53.331000 PM   APPROVED                 TAF2234                                   
  1528296849  02-SEP-16 12.00.32.008000 PM   APPROVED              TAF1234                                   
   31-AUG-16 05.05.30.433000 PM   APPROVED                 TAF1234                                   
 ===================================================== == == == =========== == == == == == == == == == =====

预期结果：

 ===================================================== == == == =========== == == == == == == == == == ===== 
  1679669315  09-SEP-16 10.43.51.932000 AM   APPROVED              TAF2214                                   
              31-AUG-16 12.41.53.331000 PM   APPROVED              TAF2234                                   
  1528296849  02-SEP-16 12.00.32.008000 PM   APPROVED              TAF1234                                   
              31-AUG-16 05.05.30.433000 PM   APPROVED              TAF1234                                   
 ===================================================== == == == =========== == == == == == == == == == =====

谢谢

4

1 回答 1

0

很抱歉回答我自己的问题，但我终于找到了解决方案。必须用空格替换 null

rpad（nvl（TO_CHAR（i.account_number），''），11，''）

于 2016-09-15T09:35:58.163 回答