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https://issues.apache.org/jira/browse/TRAFODION-135?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14696157#comment-14696157
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Atanu Mishra commented on TRAFODION-135:
----------------------------------------

Weishiun Tsai (wei-shiun-tsai) wrote on 2013-11-03:     #1
Verified on 11/2/2013, this bug has been fixed:

>>set schema seabase.phoenix;

--- SQL operation complete.
>>create table t (a int not null not droppable primary key);

--- SQL operation complete.
>>alter table t drop column if exists blah;

--- SQL operation complete.
>>invoke t;

-- Definition of Seabase table SEABASE.PHOENIX.T
-- Definition current Sun Nov 3 01:23:30 2013

  (
    A INT NO DEFAULT NOT NULL NOT DROPPABLE
  )
  PRIMARY KEY (A ASC)

--- SQL operation complete.

Weishiun Tsai (wei-shiun-tsai) on 2013-11-05
Changed in trafodion:
status: New → Fix Released


> LP Bug: 1244844 - Alter table drop column IF EXISTS syntax returns error 15001
> ------------------------------------------------------------------------------
>
>                 Key: TRAFODION-135
>                 URL: https://issues.apache.org/jira/browse/TRAFODION-135
>             Project: Apache Trafodion
>          Issue Type: Bug
>          Components: sql-general
>            Reporter: Weishiun Tsai
>            Assignee: Anoop Sharma
>            Priority: Critical
>
> Alter table drop column IF EXISTS syntax is targeted to be supported, but it 
> returns error 15001 right now.
> >>set schema seabase.phoenix;
> --- SQL operation complete.
> >>create table t (a int not null not droppable primary key);
> --- SQL operation complete.
> >>alter table t drop column if exists blah;
> *** ERROR[15001] A syntax error occurred at or before:
> alter table t drop column if exists blah;
>                             ^ (29 characters from start of SQL statement)



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