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From "Bernd Ruehlicke (JIRA)" <derby-...@db.apache.org>
Subject [jira] Created: (DERBY-126) Documentation bug. Doc sais column default can be edited - it looks like it cannot
Date Tue, 18 Jan 2005 20:59:20 GMT
Documentation bug. Doc sais column default can be edited - it looks like it cannot
----------------------------------------------------------------------------------

         Key: DERBY-126
         URL: http://issues.apache.org/jira/browse/DERBY-126
     Project: Derby
        Type: Bug
    Reporter: Bernd Ruehlicke


>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 [mailto: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 [mailto: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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