Hi,

With Firebird 3.0 a secondary condition after a between condition is not 
accepted (due to new Boolean type presumably) whereas it was in Firebird 2.5
I do not know if it is < as designed > but I did not see any warning about this 
in the release notes.

select * from rdb$database where rdb$relation_id between 1 and 500 and 
rdb$description is null; --Is working in FB2.5 and give < Invalid usage of 
boolean expression. > in Firebird 3.0
select * from rdb$database where rdb$description is null and rdb$relation_id 
between 1 and 500; -- Is working in both versions.

Thank you

Evelyne
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