[jira] Commented: (DERBY-2605) You can create BOOLEAN columns in 10.3

["A B (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DERBY-2605?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12493402 ] 

A B commented on DERBY-2605:
----------------------------

Last week I sent an email to derby-dev about the ability to create a decimal column with precision greater than 31:

  http://article.gmane.org/gmane.comp.apache.db.derby.devel/40881

I wonder if that issue and this one are related?  Ex. Should the CREATE TABLE AS functionality be performing checks on the column types that it creates?

> You can create BOOLEAN columns in 10.3
> --------------------------------------
>
>                 Key: DERBY-2605
>                 URL: https://issues.apache.org/jira/browse/DERBY-2605
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.3.0.0
>            Reporter: Rick Hillegas
>
> The work on DERBY-64 seems to have opened up a wormhole by which you can create user tables with BOOLEAN columns. The following script shows how to do this:
> drop table foo;
> create table foo
> as select systemalias from sys.sysaliases with no data;
> rename column foo.systemalias to boolcol;
> alter table foo
>   alter column boolcol null;
> select c.columndatatype
> from sys.syscolumns c, sys.systables t
> where t.tableid=c.referenceid
> and t.tablename='FOO';
> insert into foo( boolcol )
> values
> ( 0 ),
> ( 1 ),
> ( cast (null as int) )
> ;
> select * from foo;

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