[jira] Updated: (DERBY-729) Scalar time and date functions return NULL when argument is NULL

["Mike Matrigali (JIRA)" <de...@db.apache.org>]

     [ http://issues.apache.org/jira/browse/DERBY-729?page=all ]

Mike Matrigali updated DERBY-729:
---------------------------------

    Component: SQL

> Scalar time and date functions return NULL when argument is NULL
> ----------------------------------------------------------------
>
>          Key: DERBY-729
>          URL: http://issues.apache.org/jira/browse/DERBY-729
>      Project: Derby
>         Type: Bug
>   Components: SQL
>     Reporter: Bernt M. Johnsen

>
> The scalar time and date functions should return NULL when argument is NULL. 
> Sample ij run that reproduces the bug
>     ij> create table dt (ts timestamp);
>     0 rows inserted/updated/deleted
>     ij> insert into dt values ({ts '2005-11-28 14:49:40'}), (NULL);
>     2 rows inserted/updated/deleted
>     ij> select * from dt;
>     TS                        
>     --------------------------
>     2005-11-28 14:49:40.0     
>     NULL                      
>     
>     2 rows selected
>     ij> select {fn hour(ts)} from dt;
>     1          
>     -----------
>     14         
>     0
> might be a problem with other scalar functions too.

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