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  1. Derby
  2. DERBY-126

Documentation bug. Doc says column default can be edited - it looks like it cannot

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Details

    • Bug
    • Status: Closed
    • Minor
    • Resolution: Fixed
    • None
    • 10.1.1.0
    • Documentation
    • None

    Description

      From the e-mail trail on the Derby Mailing list

      I think that part of the documentation needs to be changed... Unless someone actually shows Derby can support modifying default values or add a default to an existing column, either myself or you should file a JIRA documentation bug to fix the documentation.

      Under the modifying columns, the document says two options are available....1) Increase a VARCHAR length 2) specify an interval between identity columns.

      Satheesh

      Bernd Ruehlicke wrote:

      Thanx - the intresting bit here is that the documentation under "Setting
      defaults" on
      http://incubator.apache.org/derby/manuals/reference/sqlj26.html#HDRSII-S
      QLJ-21322 sais

      "You can specify a default value for a new column or add a default value
      to an existing column (see Modifying Columns)."

      i.e. "... or add a default value to an existing column"

      That's what I am looking for.

      B-)

      ----Original Message----
      From: Satheesh Bandaram satheesh@Sourcery.Org
      Sent: Tuesday, January 18, 2005 1:32 PM
      To: Derby Discussion
      Subject: Re: Add a default to an existing column ?

      I am not aware of a way to modify a default value in Derby.
      You can add a default at the table creation time, but not
      sure if you can add a default to an existing column.

      Satheesh

      Bernd Ruehlicke wrote:

      Hmm - scary silence followed this e-mail.

      To clarify the mail.

      I want to be able to modify a default value for a column.

      Anybody know what is supported in Derby and what isn't ?

      B-)

      ----Original Message----
      From: Bernd Ruehlicke BRuehlicke@lgc.com
      Sent: Monday, January 17, 2005 1:12 PM
      To: Derby Discussion
      Subject: Add a default to an existing column ?

      Hmm - the documentation states that you can add
      a default
      value to an existing column in

      http://incubator.apache.org/derby/manuals/reference/sqlj26.htm
      l#HDRSII-SQLJ-21322 but I cannot find any
      syntax which works for me.

      Questions:

      1) What is the syntax if I want to add a
      default value to a column ?

      2) What is the syntax if I want to modify a
      default value of
      a colum ? (Is this possible at all ?)

      Thanx
      B-)

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            bruehlicke Bernd Ruehlicke
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