快速从db2导出数据到oracle

背景：一个项目目前是db2 ，需要换系统将db2的数据导入到新的oracle数据库里，也不是全部导入，仅仅导入需要的一些出入库记录。

步骤：

1. 先写好要导出数据的select sql。

如：

select b.NPRICE1, b.ninnum ,b.noutnum ,b.NPURCHDISCOUNT as zk , b.NPRICEMONEY as my ,b.NREALMNY as sy , b.CINVBASID,h.CPROVIDERID as gys,h.CCUSTOMERID as ks , b.cgeneralbid, b.cgeneralhid ,b.CBODYBILLTYPECODE,h.DBILLDATE  ,h.WLPCH as lx,h.FREPLENISHFLAG as th   from  db2inst1.ic_general_b  b inner join DB2INST1.IC_GENERAL_h  h on h.CGENERALHID=b.CGENERALHID
 where h.DBILLDATE between  '2015-03-01' and '2015-03-31' and h.dr=0 and b.dr=0;

２.在db2的命令编辑器里执行下面的sql 导出csv格式的。

export to d:\bid3.csv of del select b.NPRICE1, b.ninnum ,b.noutnum ,b.NPURCHDISCOUNT as zk , b.NPRICEMONEY as my ,b.NREALMNY as sy , b.CINVBASID,h.CPROVIDERID as gys,h.CCUSTOMERID as ks , b.cgeneralbid, b.cgeneralhid ,b.CBODYBILLTYPECODE as lx ,h.DBILLDATE  ,h.WLPCH as wlpch,h.FREPLENISHFLAG as th   from  db2inst1.ic_general_b  b inner join DB2INST1.IC_GENERAL_h  h on h.CGENERALHID=b.CGENERALHID
 where h.DBILLDATE between  '2015-03-01' and '2015-03-31' and h.dr=0 and b.dr=0;

3.在cmd里链接oracle

conn dbora@orcl

4.执行导入sql 当然，在导入之前需要先在oracle里创建数据表结构。

host sqlldr userid=dbora/orcl@orcl control=D:\control.ctl

命令中的control.ctl是需要手工敲的，比较麻烦。

下面是这个control.ctl的内容。

load data
infile "D:\bid3.csv"
into table CB
fields terminated by "," optionally enclosed by '"'
trailing nullcols
(
  NPRICE1,
  ninnum ,
 noutnum ,
   zk ,
  my ,
  sy ,
  CINVBASID,
 gys,
  ks ,
  cgeneralbid,
  cgeneralhid ,
 lx
, DBILLDATE  ,
 wlpch,
  th
)

速度还是蛮快的，比写代码来回传输要快多了。

快速从db2导出数据到oracle

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