Home Page for the TeradataForum
 

Archives of the TeradataForum

Message Posted: Wed, 12 Jan 2011 @ 23:56:02 GMT


     
  <Prev Next>   <<First <Prev
Next>
Last>>
 


Subj:   Re: ALTER TABLE and Blocking
 
From:   f.pluebell

Prior to TD13.0, Teradata holds a table level write lock on AccessRights for the entire duration of ALTER TABLE DROP column. (Deleting any rows for column level permissions that may have been granted requires a table scan.)

In 13.0 the AccessRights lock is released before modifying the actual table rows.


Fred



     
  <Prev Next>   <<First <Prev
Next>
Last>>
 
 
 
 
 
 
 
 
 
  
  Top Home Privacy Feedback  
 
 
Copyright for the TeradataForum (TDATA-L), Manta BlueSky    
Copyright 2016 - All Rights Reserved    
Last Modified: 15 Jun 2023