liubin liu wrote:
> I want to create two tables like:
> create table t1 (id INT PRIMARY KEY, cont TEXT);
> create table t2 ({select count(*) from t1} INT);
> 
> How could I do it?

You create table t2 with plain vanilla integer field, then create insert and 
delete triggers on t1 that update t2.
-- 
Igor Tandetnik

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