At 04:59 PM 25/06/2004 +0300, you wrote:

>Why a boolean value declared in a simple query in the grid looks like a
>check sign,
>but the same query but with two tables joined it didn't.

The checkmark appears when the row is in Edit mode. However, a joined
query is not an editable dataset, so you don't see the checkmark.

>I've tried also with a view but with the same result.

Same reason.

>How can I display the check in the grid ?

You can make a joined set editable by (both) a) setting correct keylinks
and b) defining the XxxxxSQL properties.

Helen