Re: this doesn't look right

Rachel

DBA_CONS_COLUMNS is a view. DECODE is applied against attrcol$.name -- which is varchar 4000.

Kind Regards,

-- 
Vladimir Begun
The statements and opinions expressed here are my own and
do not necessarily represent those of Oracle Corporation.

Rachel Carmichael wrote:


> As part of the process of making sure that null/not null constraints

> are consistent across development/staging/production, I'm looking at

> the dba_cons_columns table.

> 

> Now, as far as I know, column_names are limited to 30 characters,

> correct? If so, why is the column_name column in dba_cons_columns

> (9.2.0.1) a varchar2(4000)? I realize that the "extra space" isn't used

> and is never allocated so it's not like this is wasteful.

> 

> But it's inconsistent with everything else, since dba_tab_columns has a

> column_name column of varchar2(30).

> 

> anyone know why this is like this?

> 

> Rachel


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Author: Vladimir Begun
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