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From "Kathey Marsden (JIRA)" <derby-...@db.apache.org>
Subject [jira] Updated: (DERBY-1306) Support more than just varchar with vertical bars on query
Date Tue, 23 May 2006 23:42:30 GMT
     [ http://issues.apache.org/jira/browse/DERBY-1306?page=all ]

Kathey Marsden updated DERBY-1306:
----------------------------------

    Component: SQL

> Support more than just varchar with vertical bars on query
> ----------------------------------------------------------
>
>          Key: DERBY-1306
>          URL: http://issues.apache.org/jira/browse/DERBY-1306
>      Project: Derby
>         Type: Improvement

>   Components: SQL
>     Versions: 10.1.2.1
>  Environment: Relevant for this?  Windows XP
>     Reporter: Bill Robertson

>
> I'm not sure if this is ij or derby proper, but the concat operator || should work for
just about any data type.  Derby is zero maintenance, but data rarely is, and a good sql interface
is important.  Often it's very convenient to write a query that generates other sql statements
and that's difficult w/o concatination.
> e.g. create a table with a timestamp column, assume that the column name is originated.
> Try the following query:
> ij> select month(originated) || '-' || year(originated) from review;
> get the following error:
> ERROR 42846: Cannot convert types 'INTEGER' to 'VARCHAR'.
> The conversion to a string should pretty much work all the time unless the operand is
some sort of blob type.

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