ORACLE uuid自动生成主键

-- Create table
create table TECHNOLOGYCOMPANY
(
  ID              VARCHAR2(32) default SYS_GUID() not null,
  FLOWID          VARCHAR2(50),
  CONPANYID       NUMBER,
  ISCOMMUNICATION VARCHAR2(10)
)
tablespace USERS
  pctfree 10
  initrans 1
  maxtrans 255
  storage
  (
    initial 64K
    minextents 1
    maxextents unlimited
  );
-- Add comments to the table 
comment on table TECHNOLOGYCOMPANY
  is ‘技术交流的交流公司‘;
-- Add comments to the columns 
comment on column TECHNOLOGYCOMPANY.FLOWID
  is ‘申请编号‘;
comment on column TECHNOLOGYCOMPANY.CONPANYID
  is ‘竞争对手ID‘;
comment on column TECHNOLOGYCOMPANY.ISCOMMUNICATION
  is ‘是否交流‘;
-- Create/Recreate primary, unique and foreign key constraints 
alter table TECHNOLOGYCOMPANY
  add constraint SYS_TECHNOLOGYCOMPANY primary key (ID)
  using index 
  tablespace USERS
  pctfree 10
  initrans 2
  maxtrans 255
  storage
  (
    initial 64K
    minextents 1
    maxextents unlimited
  );

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ORACLE uuid自动生成主键

原文：http://blog.csdn.net/jrainbow/article/details/25210905