phoenix-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Jaanai Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (PHOENIX-4815) support alter table modify column
Date Mon, 16 Jul 2018 12:01:00 GMT
Jaanai Zhang created PHOENIX-4815:
-------------------------------------

             Summary: support alter table modify column 
                 Key: PHOENIX-4815
                 URL: https://issues.apache.org/jira/browse/PHOENIX-4815
             Project: Phoenix
          Issue Type: Improvement
            Reporter: Jaanai Zhang


if we want to change max length or scale of  fields of  variable length type(  example for
:varchar, char and decimal type etc),  we can not drop column to recreate new column when
the table has massive data,  which may affects online service´╝îmeanwhile, it is also very
expensive. so sometimes this function is very useful.

Taking ORACLE dialect as reference 

{code:java}
alter table
   table_name
modify
   column_name  datatype;
{code}




--
This message was sent by Atlassian JIRA
(v7.6.3#76005)

Mime
View raw message