How to create another table with an exisiting table

Question

Hi,
I want to create another table on the top of an existing table, my existing table has few constraints and checks, i want to create another table which should copy all checks and constraints from existing table.
for example;
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create table temp
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(idx number primary key,
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publish varchar2(250) not null,
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address varchar2(250) not null,
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rent number check (rent &gt;=0))
--<strong>Required output</strong>
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create table temp1
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as select * from temp
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where 1=2
the structure of the table received as an output has the following structure:
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CREATE TABLE TEMP1
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IDX NUMBER,
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PUBLISH VARCHAR2(250 BYTE) NOT NULL,
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ADDRESS VARCHAR2(250 BYTE) NOT NULL,
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RENT NUMBER
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where i could not find primary key and check constraint but i can see not null check. Is there anyway that i could get the all checks when i create another table on the top of an existing table.
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Best Regards,

Answer 1

A CTAS (CREATE TABLE AS SELECT ...) probably isn't what you're looking for since that doesn't handle constraints.
Depending on the Oracle version, you can probably use the DBMS_METADATA package to get the DDL for the table and then modify the DDL to create the copy, i.e.
  1* select dbms_metadata.get_ddl( 'TABLE', 'TEMP' ) from dual
SQL> /
DBMS_METADATA.GET_DDL('TABLE','TEMP')
  CREATE TABLE "SCOTT"."TEMP"
   (    "IDX" NUMBER,
        "PUBLISH" VARCHAR2(250) NOT NULL ENABLE,
        "ADDRESS" VARCHAR2(250) NOT NULL ENABLE,
        "RENT" NUMBER,
         CHECK (rent >=0) ENABLE,
         PRIMARY KEY ("IDX")
  USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT)
  TABLESPACE "USERS"  ENABLE
   ) PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT)
  TABLESPACE "USERS"You'd then just need to replace the "TEMP" with "TEMP1".
Justin