Very simple database problem

When I have a TQuery object with one parameter, how can I use one Field of a record in a TTable as the parameter for this?  I mean, when a TDBGrid's selected record changes, one of the fields of that record has to be passed as parameter to this TQuery object.

Thanks
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OdieAsked:
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KEConnect With a Mentor Commented:
Set the DataSource property of your query to point at the DataSource for your table.
Write the query SQL like this:
SELECT XXX FROM MYTABLE WHERE XXX=:FIELDNAMEOFTHETABLE

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OdieAuthor Commented:
Thanks
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