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Column Default Values

Posted Date: 12 Sep 2008 Resource Type: Code Snippets Category: SQL

Posted By: Prafulla S Shimpi Member Level: Gold
Rating:

Points: 10

When adding new columns with default values, set the default values with an ALTER statement after adding the columns as per the following example:


ALTER TABLE Customer

ADD

(

   lastmodifieddate DATE ,
   lastmodifieduser VARCHAR2(60),
   createddate DATE ,
   createduser VARCHAR2(60)

)

/

ALTER TABLE Customer

MODIFY( lastmodifieddate DATE DEFAULT SYSDATE)

/

ALTER TABLE oeiprice

MODIFY( createddate DATE DEFAULT SYSDATE)

/

Do not include the default values as part of the first statement.
It runs much much quicker and doesn’t hang the database.

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