FB does not support inline views/derived tables, e.g.:
SELECT count(*) FROM (SELECT col1, col2 FROM table)
If you have IB/FB, there is a sample db that comes with it, Employee. There is a view in that db called phone_list.
I did select count(*) from phone_list and it worked.
Sure you can do a select from a view, but try the above statement where the view definition is "embedded" diretly into the SELECT. This is not supported by FB 1.5 - though it will be with 2.0
I admit that it is not a very important feature, but I have come to like it, and sometimes it comes in handy :-)
Regards Thomas
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TIP 9: the planner will ignore your desire to choose an index scan if your
joining column's datatypes do not match
