让oracle帮你理财

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最新推荐文章于 2025-01-06 11:22:26 发布

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分类专栏： Oracle 基础管理

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          本案例以建设银行为例
          请将建行的交易明细表载下，并命名为ccb.txt
          此时，你有两种选择：sqlldr or external table

          ㈠ sqlldr
          因为网银只有在win上才能用，所以如果你的os是linux/unix，那么在ctl中必须指定字符集
          让UTF-8可以显示GB18030

① 建表

create table t_bank_invoice 
 ( account_number   number,
   sub_number       number,
   transac_date     date,
   transac_address  varchar2(600),
   transac_comment  varchar2(600),
   currency         varchar2(100),
   remit            varchar2(100),
   in_amount        number(20,2),
   out_amount       number(20,2),
   balance          number(20,2),
   opposite_number  number,
   opposite_username varchar2(100),
   all_comment       varchar2(2000));

② 用sqlldr

[oracle@localhost ~]$ sqlldr hr/hr control=ccb.ctl

ccb.ctl如下：

[oracle@localhost ~]$ sqlldr hr/hr control=ccb.ctl
                 ccb.ctl如下：
LOAD DATA
characterset ZHS16GBK
INFILE 'ccb.txt'
DISCARDFILE 'ccb.dis'
append
INTO table t_bank_invoice
TRAILING NULLCOLS
 ( 
   account_number "11111111111",
   sub_number "00000", 
   transac_date position(1:8)  DATE(8) "YYYYMMDD" TERMINATED BY ',',  
   transac_address   position(10)   char  TERMINATED BY ',',              
   out_amount decimal external  TERMINATED BY ','  nullif out_amount=blanks,
   in_amount decimal external  TERMINATED BY ',' nullif in_amount=blanks  ,
   balance decimal external  TERMINATED BY ',' nullif balance=blanks,
   opposite_number char  TERMINATED BY ',',     
   opposite_username char  TERMINATED BY ',',                                   
   currency char  TERMINATED BY ',',
   transac_comment  char  TERMINATED BY whitespace                
 )

③ 查询表

当然、你可以在all_comment列个性化设置你的具体消费开支，比如，交电话费多少钱、买衣服多少钱等等

㈡ external table
① 创建directory对象

sys@ORCL> create directory dir as '/home/oracle/';

Directory created.

sys@ORCL> grant read,write on directory dir to public;

Grant succeeded.

             ② 把ccb.txt放在dir下
             ③ 用sqlldr生成外部表的创建语句，并编辑ccb.log
                编辑如下：

CREATE TABLE T_BANK_INVOICE
(
  "ACCOUNT_NUMBER" VARCHAR(255),
  "SUB_NUMBER" VARCHAR(255),
  "TRANSAC_DATE" DATE,
  "TRANSAC_ADDRESS" VARCHAR2(600),
  "OUT_AMOUNT" NUMBER(20,2),
  "IN_AMOUNT" NUMBER(20,2),
  "BALANCE" NUMBER(20,2),
  "OPPOSITE_NUMBER" NUMBER,
  "OPPOSITE_USERNAME" VARCHAR2(100),
  "CURRENCY" VARCHAR2(100),
  "TRANSAC_COMMENT" VARCHAR2(600)
)
ORGANIZATION external
(
  TYPE oracle_loader
  DEFAULT DIRECTORY dir
  ACCESS PARAMETERS
  (
    RECORDS DELIMITED BY NEWLINE CHARACTERSET ZHS16GBK
    BADFILE 'ccb1.bad'
    DISCARDFILE 'ccb1.dis'
    LOGFILE 'ccb.log_xt'
    READSIZE 1048576
    FIELDS LDRTRIM
    MISSING FIELD VALUES ARE NULL
    REJECT ROWS WITH ALL NULL FIELDS
    (
      "ACCOUNT_NUMBER" CHAR(1),
      "SUB_NUMBER" CHAR(1),
      "TRANSAC_DATE" (1:8) CHAR(8)
        DATE_FORMAT DATE MASK "YYYYMMDD",
      "TRANSAC_ADDRESS" (10) CHAR(255)
        TERMINATED BY ",",
      "OUT_AMOUNT" CHAR(255)
        TERMINATED BY ","
        NULLIF ("OUT_AMOUNT" = BLANKS),
      "IN_AMOUNT" CHAR(255)
        TERMINATED BY ","
        NULLIF ("IN_AMOUNT" = BLANKS),
      "BALANCE" CHAR(255)
        TERMINATED BY ","
        NULLIF ("BALANCE" = BLANKS),
      "OPPOSITE_NUMBER" CHAR(255)
        TERMINATED BY ",",
      "OPPOSITE_USERNAME" CHAR(255)
        TERMINATED BY ",",
      "CURRENCY" CHAR(255)
        TERMINATED BY ",",
      "TRANSAC_COMMENT" CHAR(255)
        TERMINATED BY WHITESPACE
    )
  )
  location
  (
    'ccb.txt'
  )
)REJECT LIMIT UNLIMITED;

④

[oracle@localhost ~]$ cp ccb.log ccb.sql

⑤

hr@ORCL> @ccb.sql

Table created.

⑥ 查询表

             小结：如果您的存款惊人、或者经常存取，明细比较大、外部表是个不错的选择
                        但不论是sqlldr还是external table
                       都是为了方便我们理财、让我们的生活更厚重和精彩