Charles,
> Having a problem with a query. > I would like to construct a query which will return a list of all > contigs which are comprised of clones whose 'read' = 'x' (read can be > either 'x' or 'y'). It appears that you haven't formulated clearly what you want to get. I can see 3 possibilities: 1. All contigs with one or more clones whose read = 'x' and those clones. 2. All contigs with one or more clones whose read = 'x' and all of those contig's clones 3. All contigs where all clones have read = 'x' Which do you want? -- -Josh Berkus Aglio Database Solutions San Francisco ---------------------------(end of broadcast)--------------------------- TIP 2: you can get off all lists at once with the unregister command (send "unregister YourEmailAddressHere" to [EMAIL PROTECTED])